ベンカン機工 List of Products and Services

Among the welded pipe fittings manufactured by Benkan Kiko, the ones with material codes "PG370" and "PT370" are particularly produced in large quantities. We receive many inquiries from customers regarding the differences between "PG370" and "PT370." Pipe fitting "PG370" ... is a pipe fitting for pressure piping. - It connects to the steel pipe STPG370 according to JIS G 3454. - It is mainly used for pressure piping at temperatures below approximately 350°C (excluding high-temperature applications). - The maximum operating pressure is typically below 10MPa. Pipe fitting "PT370" ... is a pipe fitting for high-temperature piping. - It connects to the steel pipe STPT370 according to JIS G 3456. - It is mainly used for high-temperature piping at temperatures exceeding 350°C (up to approximately 450°C). - The maximum operating pressure is typically below 20MPa. These are the differences.

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The details of the product we are introducing this time are as follows: JIS (Plating) Type: 90E(S) Material: PY400 Size: 1500A (60 inches) Thickness: 7.9mm This is a plated product of a large-diameter welded pipe fitting as specified by the customer. In particular, processing of hot-dip galvanized products such as 1500A (60 inches) is not easy and is a high-difficulty product. Benkan Kiko also manufactures large-diameter products. 《Manufacturing Range》 Size: up to 2000A (80 inches) Thickness: up to 120mm *Please note that this varies by type, so for details, please contact us. Pipe fittings made from steel pipes as the material can be difficult to obtain depending on the size, making them unsuitable for manufacturing large-diameter products. The production of large-diameter pipe fittings can be achieved by forming and welding from steel plates.

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There are cases where "polishing" is required for the surface finish specifications of welded pipe fittings, and particularly for stainless steel products, a glossy and smooth finish is achieved through "buff polishing." "Buff polishing" is a method that uses a polishing tool equipped with cotton, felt, or wool called a "buff," along with a paste-like polishing material, to smooth the surface, especially when a mirror finish is required. Buff polishing has classifications of "roughness," expressed as a certain grade number. Generally, the larger the number, the higher the grade, resulting in a glossier surface on the product. At Benkan Kiko, regardless of buff polishing finish, we accommodate surface grade specifications not only with the polishing material grade but also with surface roughness parameters (Ra, Rmax, etc.), roughness symbols, evaluations using comparison test pieces, and evaluations using surface roughness gauges, allowing us to meet surface grade requirements tailored to specific applications. If polishing is necessary for welded pipe fittings in piping design, please feel free to contact us. <Varieties> - Elbows, T, reducers, caps, stub ends <Materials> - We can accommodate various materials including SUS304, SUS304L, SUS316, SUS316L, and others.

• Fittings
• Sewerage facilities
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Our company manufactures welded steel pipes, similar to butt-welded pipe fittings. For butt-welded pipe fittings, we handle manufacturing in various materials including carbon steel, alloy steel, and stainless steel, as well as special materials. We can also manufacture welded steel pipes using the following representative materials: Carbon steel: SS400, SB410, SB450, SB480, SM400A, SM400B, SGV410, SGV480, SM490C, SM520C Alloy steel: SB450M, SB480M, SCMV2, SCMV3, SCMV4, SCMV5 Stainless steel: SUS304, SUS304L, SUS316, SUS316L *We can also accommodate other special materials, so please contact us for inquiries.

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A stub end is a welded pipe fitting that has a flange at the end and is used in combination with a loose flange. Instead of rotating the pipe itself, the loose flange is rotated, allowing for the bolt hole positions to be freely adjusted, which improves the workability on site during installation. This product is used in a wide range of applications, primarily in low-pressure piping, such as water supply and drainage systems and factory piping. It is particularly popular in paper mills. In addition to standard products, we also offer custom items tailored to customer specifications, so please leave it to Benkan Kiko. We can accommodate products with flange diameters other than 10K, including 5K and 20K, as well as products with dimensions that differ from standard specifications and serration processing. Leveraging our strength in manufacturing at our domestic factories, we respond flexibly to customer requests. "If you need a specific height" or "Can you make this flange diameter?" Please feel free to reach out to us.

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The Amagasaki Warehouse (Osaka Factory, Fusso Area) is a production base for welded pipe fittings and also holds stock of welded pipe fittings to deliver products to customers in the western Japan area (Kinki region, Chugoku region, Shikoku region, Kyushu region) in a short lead time. We have now added FSGP TEE (5B to 14B) and FSGP Elbow (14B to 20B) to the stock at the Amagasaki Warehouse. This will enable us to respond to customers in the western Japan area with even shorter lead times. Additionally, we have established a production system for FSGP Elbow (14B to 20B) in the Fusso area, and we will work on further expansion to support our customers with a more abundant inventory.

• Fittings
• Sewerage facilities
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"I want to join the pipe fittings and support materials, but I'm concerned about strength and thermal effects, so I don't want to attach them to the main body of the pipe fitting. Welding and attaching a PAD (backing plate) to the pipe fitting on-site is cumbersome." In such cases, please do not hesitate to contact Benkan Kiko. By attaching a PAD (backing plate) to the necessary parts in piping support structures (horizontal and vertical loads), we can enable the joining of the PAD section and the support material. However, manufacturing pipe fittings with PADs is not easy. The PAD and the pipe fitting are produced separately through plastic processing, but welding them together so that they fit perfectly requires a very difficult task known as PAD shape correction. Benkan Kiko has three domestic factories (five locations) and various know-how accumulated by skilled craftsmen who hone their skills there. There have been cases where pipe fittings with PADs, which were deemed technically difficult during the consideration stage, were made possible by pooling wisdom and technology across factories. Although the PAD (backing plate) attached welded pipe fittings are custom-made and unique, please consider contacting Benkan Kiko when you are evaluating your options.

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The pipeline has not only straight sections but also bends and branching parts. The guide plate that allows the pig to pass smoothly through the branching section without getting caught on the branch side is called a guide bar (pig bar). At Benkan Kiko, we manufacture elbows used in the bending parts of pipelines and T (tee) fittings used in branching parts, but the T fitting with a bar attached to the branching part is referred to as a T fitting with a guide bar. Regarding the guide bar, there are various know-how related to its shape and installation method, and welding to the T fitting body often needs to be performed using a welding method (welding construction method) approved based on regulations such as the Gas Business Act. Benkan Kiko has obtained many welding construction methods based on regulatory requirements such as the Gas Business Act and the Electric Utility Act, allowing us to respond to various cases. In addition to being able to accommodate various shapes of guide bar installations according to customer requests, we can also procure the materials for the guide bars ourselves. Furthermore, we are qualified to conduct various tests and inspections on the welding parts of the guide bars. Source of pig photo: JFE Engineering Corporation.

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In a wide range of fields such as shipbuilding, plant equipment, and air conditioning systems, large diameter welded pipe fittings are adopted, with sizes ranging from 16B to 20B (400A to 500A) for FSGP (JIS B 2311) and from 14B to 24B (350A to 600A) for stainless steel (JIS B 2313). We have now stocked large diameter items at our Amagasaki warehouse (Fuso-cho, Amagasaki City, Hyogo Prefecture). 【Items available in large diameter stock】 Type: Elbow (Long/Short) Material: FSGP (JIS B 2311), SUS304W (JIS B 2313) Thickness: 4.0T/5.0T/6.0T/S10S/S20S *Compatible with SUS304 - For customers west of Okayama, we can achieve next-day delivery for orders placed by 2 PM. - We can accommodate pickups for customers in the Kansai region (products can be picked up at the Benkan Kiko factory). - Regular deliveries to the Osaka area are available (we operate daily regular services from the Amagasaki warehouse to Osaka City). For more details such as quotes, please use the contact form below or contact us directly. We also maintain a constant stock of small diameter items. *1/2B-14B (15A-350A)

• Fittings

Elbows are specified in the JIS standard as types of shapes such as 90° elbows, 45° elbows, and 180° elbows. In cases where the design of the piping cannot accommodate those angles, the JIS standard recognizes "special angle elbows," which can be manufactured at special angles as needed for piping design. Elbows manufactured at special intermediate angles such as 60°, 30°, and 135° are referred to as "special angle (end angle) elbows." At Benkan Kiko, we respond meticulously to customer requests and support the custom manufacturing of end angle elbows. **Benefits of adopting Benkan Kiko's end angle elbows:** - If elbows are processed on-site during piping installation, the product warranty for those fittings will be voided, so it is safer to manufacture them at the required angles in advance. - Processing elbows to specific angles or bevel ends on-site requires equipment and expertise, so using pre-processed products is safer. - Products can be manufactured with dimensional accuracy based on JIS standards. - We can issue manufacturing drawings and delivery drawings that include detailed dimensions of the products as per your requests.

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At the Amagasaki warehouse, we hold stock of JIS standard products that have a high distribution volume in the market, similar to the Ashigara Logistics Center. For example, by shipping products from the Amagasaki warehouse, it is possible for them to arrive a day earlier than shipments from the Ashigara Logistics Center (Kanagawa Prefecture). In anticipation of such cases, we are strengthening our inventory to enable short delivery times, especially for customers in the western Japan area (Kinki region, Chugoku region, Shikoku region, Kyushu region). We stock not only welded pipe fittings but also a wide variety of stainless steel flanges. We appropriately allocate shipping points while confirming the delivery destinations of our customers. Additionally, the Amagasaki warehouse has regular services, allowing for timely delivery of heavy goods to nearby areas. *Please note that the serviceable areas are predetermined.

• Fittings
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At Benkan Kiko, we have established four logistics bases to ensure smoother delivery of products requested by our customers: two locations in Gunma Prefecture (Kiryu Factory and Kiryu Branch Factory), one in Kanagawa Prefecture (Ashigara Logistics Center), and one in Hyogo Prefecture (Amagasaki Warehouse). This time, we would like to introduce the Ashigara Logistics Center in Kanagawa Prefecture, which manages the largest scale of shipments among these locations. The Ashigara Logistics Center specializes in the rapid dispatch of products, focusing on those with high market circulation, such as JIS standard items. Located in Minamiashigara City, Kanagawa Prefecture, it takes advantage of its suitable location near the Tomei Expressway interchange, allowing for extensive shipping from Hokkaido to Okinawa. We offer same-day shipping (with the fastest delivery by the next day) and can accommodate a wide range of needs, including direct delivery by 4-ton and 10-ton trucks, as well as air freight. For detailed inquiries regarding product shipments, please contact your sales representative.

• Water Treatment
• District heating and cooling/heat source system
• Pipeline Construction

At Benkan Kiko, we have a wealth of experience in the manufacturing of aluminum and aluminum alloy pipe fittings. Characteristics of Aluminum: - It is lightweight and easy to process, but has low strength. - It has good thermal conductivity. - Its toughness does not decrease at low temperatures, making it suitable for use in extremely low temperatures such as liquid hydrogen at -252.7°C. - It has excellent weather resistance due to the formation of an oxide film when it reacts with oxygen in the atmosphere; however, this oxide film can be destroyed in acidic or alkaline environments, particularly in the presence of chloride ions or alkaline conditions. Due to these characteristics, aluminum is a material that is difficult to shape and weld. However, it offers significant advantages such as corrosion resistance and maintaining toughness at low temperatures, making it suitable for piping in harsh corrosive environments like seawater, as well as for extremely low-temperature piping and tanks for liquefied natural gas and liquid hydrogen. At Benkan Kiko, we have established molding and welding techniques through years of accumulated technology and know-how, enabling us to manufacture with delicate materials like aluminum. Additionally, based on our extensive experience and achievements, we can flexibly address various problem-solving needs. Please feel free to consult or request our services with confidence.

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Among the various tests associated with pipe fittings, there is a "mechanical test" that examines the mechanical properties of the product. One of these, the "hardness test," measures hardness by pressing a hard indenter (such as diamond) into the surface of a test piece or product with a constant load using a hardness testing machine. There are several types of "hardness tests," and Benkan Kiko is capable of accommodating each of them. The types of hardness tests include the following: ▻ Brinell hardness test (HBW) ▻ Vickers hardness test (HV) ▻ Rockwell hardness test (HRCW or HRBW, etc.) Benkan Kiko has extensive experience in mechanical testing, and we accept requests not only for tests associated with pipe fittings but also for mechanical tests alone. If you have any concerns, please feel free to consult us. Details of the tests are explained in detail on our company blog.

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There are materials for pipe fittings used for low-temperature piping, namely "PL380" and "PL450." ■PL380 Category: Carbon Steel (Aluminum Killed Steel) Usage: Used for low-temperature piping down to -45°C. Mainly used for fluids such as ammonia and LPG. Our Response: We have steel pipes for some sizes in stock, and we can manufacture the relevant sizes with a relatively short lead time. ■PL450 Category: Alloy Steel (3-1/2Ni Steel) Usage: Used for low-temperature piping down to -100°C. Mainly used for fluids such as hydrogen sulfide, CO2, and acetylene. Our Response: While we do not always have this material in stock, we can accommodate requests. Additionally, austenitic stainless steel and aluminum may also be used. For welded pipe fittings when selecting PL380, PL450, austenitic stainless steel, or aluminum in piping design, please contact Benkan Kiko. *We will provide detailed estimates for lead times and prices based on your specific conditions.

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There are pipe fittings manufactured using materials certified by classification societies, referred to as "marine grade." These fittings are made from materials that meet the standards set by the classification societies, which are generally difficult to obtain. However, at Benkan Kiko, we leverage our extensive experience and sources for material procurement to provide stable supply capabilities, assisting our customers with design, procurement, and production. We can accommodate carbon steel, low-temperature steel, alloy steel, and stainless steel. We primarily support materials from the following five classification societies: 1. Nippon Kaiji Kyokai (NK) (KSTPT38, KLPB, KSTPA22, KSUS316LW, K304LTP, etc.) 2. Bureau Veritas (BV) (BV360, etc.) 3. DNV GL (DNV) (TS360, GL360, etc.) 4. Lloyd's Register (LR) (LR360, LR410, LR360LT, LR440, etc.) 5. American Bureau of Shipping (ABS) (ABS 2, ABS 3, ABS 4, ABS 5, ABS 1L, ABS 12, etc.) We can also accommodate other steel grades not listed above. Please feel free to contact us.

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The various special fittings for processes handled by Benkan Kiko require a wider range of specifications than commonly used and sold pipe fittings. In particular, pressure resistance performance is an important characteristic for ensuring the behavior and safety of pipe fittings under high pressure. Pressure resistance performance is secured by optimizing the shape and dimensions of the pipe fittings, and one of the design methods used is FEM analysis. This service includes the following main contents: - Design support for piping materials such as pipe fittings using FEM analysis ▻ Design of special-shaped pipe fittings (replacement from cast piping materials in high-pressure environments, etc.) ▻ Evaluation of the pressure resistance performance of existing pipe fittings ▻ Manufacturing of special fittings (support from material procurement to manufacturing, testing, inspection, and shipping) - Various responses are possible by combining with our proprietary technology. For inquiries, please first contact our sales representative or use the web inquiry form on our website. From the initial meeting, a dedicated representative from our technical headquarters will respond, allowing you to directly reflect your requests in the analysis results. We can accommodate various meeting formats, including visits, coming to our office, and web conferences (Zoom, MS Teams, etc.). Please feel free to consult with us.

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When various documents related to the environment and chemical substances are needed for metal products such as welded pipe fittings, Benkan Kiko will prepare them. If you need them, please first contact us through the "Contact Us" section below for more details. For documents that you are unsure how to respond to, we will provide the necessary information items, so you can simply respond accordingly. Additionally, changes to the target components, maximum allowable values, and reporting forms may occur, so we will provide appropriate documents after carefully examining your requests and the issuance rules.

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• Analysis and prediction system

A tapered pipe refers to a piping product with different cross-sectional areas at the inlet and outlet. There are similar products called reducers, but reducers have standardized lengths and steps. However, in piping construction, there may be cases where products with lengths and steps that differ from the standards are required. In such cases, tapered pipes can be utilized. Additionally, while there is a manufacturing method that involves machining steel materials, for large-diameter products, considering material and processing costs, tapered pipes manufactured by welding steel plates offer cost advantages. At Benkan Kiko, we can manufacture from a single piece in small lots, and we can produce according to customer requests and various conditions regarding diameter, plate thickness, wall thickness, length, etc. Furthermore, we can also manufacture using materials such as carbon steel, high-strength steel, alloy steel, stainless steel, and non-ferrous metals like aluminum. For more details, please feel free to contact us.

• Fittings

Stainless steel seamless pipe fittings are used in many fields of piping that require corrosion resistance, ranging from low to high temperatures and high-pressure applications. As the name suggests, seamless pipe fittings are made from pipe without joints, which minimizes the risk of corrosion at the longitudinal welds and makes them suitable for critical piping specifications. Our company stocks elbows up to 12B and tee reducers up to 8B, and we have a system in place for immediate delivery to respond to urgent requests. Additionally, for products larger than the above sizes, we have the capability to manufacture a wide variety of products in terms of both types and materials to accommodate various customer piping designs. For example... "I need just one seamless elbow by tomorrow; can you accommodate that?" "This is a bit of a special material for stainless piping; can you handle the fittings?" "Can you manufacture fittings with special shapes?" If you have any concerns, please feel free to consult with us. For information on our manufacturing capabilities, please also visit our website. http://benkankikoh.com/weldfit/w-disposal/w-disposal-index.html

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At Benkan Kiko, in addition to butt-welded pipe fittings, we also manufacture arc-welded steel pipes made of steel plates. There are no lot constraints, and we can accommodate manufacturing in random lengths as specified by the customer. We can produce the desired quantity and length, such as "I only need one 500L on site..." Additionally, we can also perform beveling (grooving) on both ends or one end, which may be difficult to handle on-site, according to the bevel shape specified by the customer. By manufacturing to the specified shape, immediate piping installation after delivery becomes possible, and we have received positive feedback from our customers. 【Manufacturing Range】 - Diameter: 400A (16B) to 1200A (48B) - Wall thickness: Up to 90mm - Length: From short pipes to 8,000mm (8000L) *Please inquire for sizes other than those listed above.

• Special Construction Method
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At Benkan Kiko, we conduct various tests using the testing equipment owned by our Osaka and Kiryu factories. Based on our testing technology, we can undertake mechanical testing of metal and steel materials at Benkan Kiko. **Benefits of Testing at Benkan Kiko:** - We handle everything from specimen cutting to specimen processing and testing as a package, not just the testing itself. - We can accommodate tests in accordance with JIS, ASTM standards, as well as legal regulations such as the Electricity Business Act, Gas Business Act, and High-Pressure Gas Safety Act. - We also support various test witnessing (including customer witnessing and third-party witnessing by classification societies). - We can accommodate overseas standards such as ASTM standards. - We accept orders starting from small lots of one type. We will do our best to cooperate with delivery times, so please feel free to contact us if you are in need of urgent testing assistance.

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At Benkan Kiko, we utilize our expertise and technological capabilities related to special steel to manufacture and deliver welded pipe fittings according to our customers' requests. This time, we would like to introduce an example of a duplex stainless steel elbow, which has high corrosion resistance, high strength, and good weldability, delivered for piping in a flue gas cleaning system. The flue gas cleaning device (hereinafter referred to as "scrubber") is a device that cleans and releases particulate matter and harmful gases generated, and special steel is often used for the piping installed with this scrubber. Application: Piping for flue gas cleaning device (scrubber) Material: UNS S32750 Delivery size: 1-1/2B (40A) to 14B (350A) This time, all products were manufactured as welded assembly types from steel plates. At Benkan Kiko, we can also manufacture from other special materials such as super stainless steel and aluminum, and we are capable of producing large diameters from 16B (400A) to 48B (1200A), as well as welded pipe fittings exceeding 1200A. We are actively responsive to inquiries regarding the manufacture of welded pipe fittings made from special steel and special dimensions, so please feel free to consult with us.

• Fittings
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Super 9Cr is a material that is difficult to handle even among alloy steels, but we have received this order as a leading company in the manufacturing of alloy steel pipe fittings with a proven track record worldwide. We can also accommodate the specifications of "small diameter and thick-walled" products, which are challenging to shape through plastic processing, so please feel free to contact us. We look forward to your inquiries about what we can do! We will also consider manufacturing in the shape requested by our customers.

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At Benkan Kiko, we manufacture a wide range of welded pipe fittings, from custom orders to mass production standard products, including both domestic and overseas factories, to meet our customers' diverse needs. This time, we would like to introduce our stainless steel stub ends (also known as lap joints) manufactured at our Osaka factory. Regarding standards, we have molds that cover JPF, JIS, JPI, MSS, and ASME, and we can accommodate stainless steel types other than the commonly used SUS304 and SUS316L, with a manufacturing range from 1.5B to 12B. We can handle both small and large lots, and we also offer short delivery times. Additionally, since we manage everything in-house from material cutting to shaping, heat treatment, and inspection, we have absolute confidence in our quality control. We can provide items tailored to your specifications, whether they are unique pieces or mass-produced items. Because we manufacture in our own factory, we can also accommodate requests such as "considering products with slightly different dimensions than the standard" or "if there were such stub ends..." So please feel free to consult with us.

• Fire extinguishing equipment
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At Benkan Kiko, we manufacture welded pipe fittings from materials such as steel pipes, steel plates, and forgings, and from materials like carbon steel, alloy steel, stainless steel, and non-ferrous metals. To ensure the integrity of our products, we conduct non-destructive testing in accordance with standards and regulations, as well as in line with our customers' requirements. Non-destructive testing is a method that examines the presence, location, size, shape, and distribution of defects without damaging the material or product, and is also referred to as "Nondestructive Examination: abbreviated as NDE." It can be divided into tests for detecting surface defects and tests for detecting internal defects. 【Detection of Internal Defects】 1. Radiographic Testing (RT) 2. Ultrasonic Testing (UT) 【Detection of Surface Defects】 3. Magnetic Particle Testing (MT) 4. Liquid Penetrant Testing (PT)

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Polishing is effective in enhancing the design of metal surfaces and refining surface roughness by applying a polishing treatment to the product. Finishing is mainly done through buff polishing, and regarding the finishing roughness grades, it is possible to accommodate the inner surface, outer surface, and both surfaces of pipe fittings with grades such as #200, #300, #400, and #600. The types include elbows, tees, reducers, caps, and stub ends, and the materials mainly correspond to SUS304, SUS304L, SUS316, and SUS316L. We accept orders starting from a single small lot. For more details, we can consider and propose various options based on your requests and conditions, so please feel free to contact us first.

• Fittings
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At Benkan Kiko, we manufacture various types of steel header pipes, which are a kind of prefabricated product. 1. Diameter, plate thickness (product thickness), length, etc. We can consider and propose various options. Please consult with us first. 2. Materials We can manufacture using carbon steel, high-strength steel, alloy steel, stainless steel, as well as non-ferrous metals like aluminum. 3. Various tests as needed Non-destructive testing... RT (radiographic testing), PT (penetrant testing), MT (magnetic particle testing), UT (ultrasonic testing), etc. Mechanical testing... tensile testing, bending testing, etc. 4. Wide-ranging support for material procurement Utilizing a wealth of sourcing options, we can procure materials in-house, allowing you to trust us with your needs. [Product Examples] - A main pipe with multiple outlet pipes (branch pipes) attached for piping. - Branch pipes attached to R parts such as elbows, etc.

• Fittings

A tapered pipe is a piping product manufactured from steel plates, featuring a slope and longitudinal weld seam, and refers to anything other than a reducer in the standards for welded pipe fittings. Reducers have specifications for product height (length) and step differences (the difference in diameters of the connecting pipes), but during piping installation, there may be cases where products with different heights or step differences from the standards are required. In such cases, tapered pipes can be utilized. Short pipes can also be supplied as needed, with the required length and end processing for short steel pipe components necessary for piping design. These products contribute to reducing construction time and improving on-site construction efficiency for our customers. Please consult us regarding diameter, plate thickness (product thickness), length, etc. Additionally, materials can be manufactured from carbon steel, high-strength steel, alloy steel, stainless steel, and non-ferrous metals such as aluminum. Both tapered pipes and short pipes can be ordered from a single small lot. Tapered pipes can accommodate both concentric and eccentric designs. In addition to piping applications, how about considering them for steel structures or welded structures? We can provide various proposals based on your requests and conditions, so please feel free to contact us for more details.

• Fittings
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The name "Monaka" originates from a type of Japanese confectionery called "monaka," which consists of two wafers filled with sweet bean paste. 1. Enhanced facilities enable the production of products tailored to your needs When manufacturing large-diameter elbows, a method may be employed that combines steel pipes known as "maita bends" and "ebi pipes" to create elbow shapes. The Monaka manufacturing process requires molds and high-output pressing machines. Our facilities are well-equipped, allowing us to produce products that meet our customers' requirements. 2. Fewer weld seams reduce the risk of welding defects Due to the manufacturing method of combining steel pipes through welding, maita bends tend to have many weld seams, resulting in increased inspections. Our elbows have only two weld seams along the length, significantly fewer than maita bends, thereby reducing the need for inspections on weld seams and minimizing the quality risks associated with welded joints, allowing for safer usage. 3. Smooth shape minimizes the impact on fluids Maita bends have an angular shape due to the combination of steel pipes, while our formed elbows have a smooth R shape, which minimizes the impact on fluids. We can accommodate various materials (for details, please refer to the section below), so please feel free to contact us.

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Our company utilizes a 30-ton large batch furnace (4000W x 2700H x 11000L) as the main equipment for heat treatment, and we carry out various heat treatments according to our customers' requests, conditions, and product sizes. The types of heat treatment we can perform include "Normalization: Annealing," "SR: Stress Relief Annealing," "Quenching: Hardening," "Tempering: Tempering," or combinations of these treatments. (Quenching of large products requires consultation.) For more details, we can consider and propose various options based on our customers' requests and conditions, so please feel free to contact us.

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Among the core logistics centers, the distance to each transportation company's terminal is close, and the transportation efficiency is outstanding. We have the following stock items, including carbon and stainless steel welded pipe fittings and stainless steel flanges. 【Stock Items】 - Elbows (long and short) - Tees (same diameter and different diameter) - Reducers (concentric and eccentric), etc. - Stainless steel flanges 【Materials and Types】 - FSGP (black pipe and white pipe) - PT370 (S40, S80, S160) - SUS304, 316, 316L, etc. - SOP-FF/RF - BL-FF/RF, etc.

• Water Treatment
• District heating and cooling/heat source system
• Pipeline Construction

At Benkan Kiko, we own various testing machines for mechanical tests such as tensile testing machines, bending testing machines, impact testing machines, and hardness testing machines. Our manufacturing plants, Kiryu Plant and Osaka Plant, are equipped to conduct mechanical tests, allowing us to perform product manufacturing and the associated mechanical tests within the same facility, thereby achieving high-quality product management and reducing lead times. Additionally, we conduct strict calibration of measuring instruments and manage calibration documentation under traceability linked to national standards, so you can trust us with confidence. Mechanical tests can also be conducted in the presence of customers. Please feel free to contact us for more details. We take great pride in our "monozukuri" (manufacturing) and have received high praise for providing high-quality products to our customers. East Japan Sales Division: 03-3777-1521 West Japan Sales Division: 06-6482-1851

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Our Osaka Factory in the Fusso area (Fusso-cho, Amagasaki City, Hyogo Prefecture) serves as a production base and holds inventory of welded pipe fittings to deliver products to customers in the western Japan area (Kinki region, Chugoku region, Shikoku region, Kyushu region) with short lead times. 【Stock Items】 - Elbows (Long, Short) - Tees (Same Diameter, Different Diameter) - Reducers (Concentric, Eccentric), etc. - Stainless Steel Flanges 【Materials and Types】 - FSGP (Black Pipe, Coated) - PT370 (S40, S80, S160) - SUS304, SUS316, SUS316L - Stainless Steel Seamless, etc. - SOP-FF/RF - BL-FF/RF *Please inquire separately regarding the sizes and lineup of stock items. We have a rich inventory, and to further expand our stock product lineup, we have established new racks. We plan to add more racks in the future to support with an even more abundant inventory. Additionally, we have regular delivery services, allowing for timely delivery of heavy items to nearby areas. *Within the delivery area. We also offer next-day shipping to the Kinki, Chugoku, Shikoku, and Kyushu areas, so please feel free to contact us. *For distant areas, delivery will be the day after next.

• Fittings
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• Water Supply Facilities

The Y pipe in the photo is a special shape with a size of 4B, featuring a 30° (R300) elbow with a 1B short pipe welded to the back side. Since SUS430 is in sheet form, both the elbow and the short pipe are manufactured by forming pipes from the sheet. After shaping, the inner surface is polished to achieve a very smooth finish. Type: Special Y pipe Dimensions: 4B x 1B Wall thickness: 3.0T Material: SUS430 This product is used in metal powder processing equipment and has received high praise from our customers. In addition to the above, we are engaged in the production of various types and shapes of products, with many successful deliveries. "If only we could make such a joint?" "It would be great to have a joint like this." If you have such requests, please feel free to consult with us.

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• others
• Fittings

What is the RoHS Directive? The RoHS (Restriction of Hazardous Substances, commonly known as RoHS) Directive is a regulation enacted by the European Union (EU) in July 2006 that restricts the use of certain hazardous substances in electrical and electronic equipment. The RoHS Directive aims to ensure that electrical and electronic equipment does not contain hazardous substances, primarily to facilitate recycling under the WEEE Directive and to prevent harm to humans and the environment during landfill disposal or incineration. Based on the official gazette published in June 2015, it has been decided that, starting from July 2019, four new phthalate esters will be added as restricted substances. *The WEEE (Waste Electrical and Electronic Equipment, commonly known as WEEE) Directive is a regulation by the European Union (EU) concerning waste electrical and electronic products.

• Fire extinguishing equipment
• Prefab
• others

We received an order for products for the replacement work of elbows with long seam welds, which we supplied several decades ago, for the after-service project at the Nagasaki Plant of Mitsubishi Heavy Industries, Ltd. for their thermal power plant. This project involved the on-site replacement of aging piping used under high temperature and high pressure conditions. However, instead of supplying the same elbows as before, we provided a new product that incorporates many advantages, which was well received. The specifications of the product that were appreciated are as follows: - Seamless elbows to eliminate long seam welds. - To reduce the workload within the engineering manufacturer, a hydraulic pressure test was conducted at Benkan Kiko at a pressure of 1.3 times the design pressure. - To facilitate easy replacement work on-site, lifting fixtures were installed. By conducting the hydraulic pressure test at 1.3 times the design pressure in advance at Benkan Kiko, we can avoid the risk of performing a hydraulic pressure test at 1.3 times the design pressure on aging piping. We have confirmed and experienced effects such as delivery management and workload reduction, and we have received high evaluations, including subsequent orders for after-service projects under the same scheme.

• Fire extinguishing equipment
• Ventilation and smoke exhaust equipment
• Fittings

Have you ever experienced trouble when checking the delivery time for the PY400, only to find that the required timing and the necessary delivery period did not match? We have wholesalers who stock the PY400 among our business partners. The stock range is from nominal diameter 400A to 1000A and nominal thickness from 7.9mm to 12.7mm. Based on data obtained from years of production experience, we have established a system for immediate delivery of sizes with a certain frequency of use. Additionally, our wholesalers have warehouses in two locations, one in Osaka to the west and one in Tokyo to the east, allowing for a delivery system that does not limit the delivery location. If you are having trouble with the delivery time for the PY400, please feel free to consult with Benkan Kiko.

• Water Treatment
• Fire extinguishing equipment
• Fittings

We supply a large number of large-diameter seamless steel pipe fittings made from materials specified for power generation thermal power generation equipment. Material: Fire STPA28 *For overseas: SA234WP91, SA234WP92 We have a significant track record of deliveries to power plants both domestically and internationally. Please feel free to consult or inquire with us. Project Sales Department, East Japan Sales Section (03-3777-1521) Project Sales Department, West Japan Sales Section (06-6482-1851)

• Fire extinguishing equipment
• Ventilation and smoke exhaust equipment
• Fittings

Bulge forming (hydroforming) is a method of processing materials by applying high internal pressure and axial load (axial pushing) to a pipe material (such as steel pipes) placed in a mold, deforming it into a shape that conforms to the mold. It is a plastic processing technique using various alloy steel pipes, including carbon steel, stainless steel, aluminum, copper, and brass. Using bulge forming offers the following advantages: 1. It allows for integral forming, enabling complex shapes to be created. This improves the rigidity of the processed products and leads to enhanced quality. 2. It enables material thickening forming, allowing for right-angle bends in steel pipes, which can reduce processing time and increase processing speed. Thus, it is a forming method that allows for complex shapes while also achieving cost reductions. Our company is capable of manufacturing welded pipe fittings, including T (tee), special T (tee) at 45° YT, crosses, laterals, and more. We also accept inquiries for welded pipe fittings tailored to customer needs in terms of material, diameter, and thickness, as well as the production of special items, so please feel free to contact us.

• Prefab
• others
• Fittings

When inquiring about welded pipe fittings, the following information 1-6 is required: 1. Standard: JIS, ASME, etc. 2. Shape: Elbow... Angle (45 degrees, 90 degrees) Bend radius (long, short) Tee... T(S) = same diameter, T(R) = different diameter Reducer... R(C) = concentric, R(E) = eccentric Cap... CAP Lap joint... LJ (5K, 10K, 20K) 3. Material: SGP, PT370, SUS304W, etc. 4. Diameter: A designation... 25A or B designation... 1B, etc. 5. Thickness: S10S, S20S, S40, etc. 6. Whether there are regulatory requirements or additional specifications (if necessary) *Examples of combinations for 1-5: Example 1: 1. JIS 2. 90EL 3. SUS304W 4. 3B 5. S10S Example 2: 1. JIS 2. T(R) 3. PT370 4. 80AX50A 5. S40 If you provide your inquiry as above, we can respond smoothly. Regarding 6, it may apply to customers in the electrical, gas, or high-pressure gas sectors.

• Water Treatment
• Fire extinguishing equipment
• Fittings

Radiographic Testing (RT) is a non-destructive testing method that allows inspection without damaging the product, making it possible to examine invisible internal defects. RT is primarily conducted to detect defects in the longitudinal welds of joints, and it can be applied to products with wall thicknesses ranging from a few millimeters to over 100 mm. We can also accommodate products for which RT is required by regulations such as the Electric Utility Industry Law, Gas Utility Industry Law, and High-Pressure Gas Safety Law, as well as those requested by customers. Additionally, considering the test specimen and the defects to be detected, we implement appropriate testing by selecting and combining various methods, including Penetrant Testing (PT), Magnetic Particle Testing (MT), and Ultrasonic Testing (UT), in addition to RT. We are also able to respond to various testing requests from customers, so please feel free to consult with us.

• Special Construction Method
• Prefab
• Pipeline Construction

Benkan Kiko has absolute confidence in product quality, ranging from unique items to those requiring mass production in shipbuilding pipe fittings. We will certainly meet our customers' expectations for stable supply, not only for ship class products but also for JIS standard products (from small diameter to large diameter). We also accommodate materials from the following five classification societies: 1. Nippon Kaiji Kyokai (NK) (e.g., KSTPT38, KSUS316LW, etc.) 2. Bureau Veritas (BV) (e.g., BV360, etc.) 3. DNV GL (e.g., TS360, GL360, etc.) 4. Lloyd's Register (LR) (e.g., LR360, etc.) 5. American Bureau of Shipping (ABS) (e.g., ABS 4, etc.) Please feel free to consult with us.

• Fittings
• Sewerage facilities
• Water Supply Facilities

■ White gas pipes for air conditioning equipment (FSGP coated products) ■ For cooling water piping ■ Stainless steel pipes for return lines in steam piping ■ Black gas pipes for steam and oil piping (FSGP products) Among others, we offer a wide range of welded pipe fittings in all these materials, with various sizes and wall thicknesses available in stock. They are used in large buildings, commercial facilities, hotels, factories, and other central air conditioning buildings. Please feel free to contact us for quotes or inquiries.

• Fittings

Our company manufactures and sells not only welded pipe fittings but also general-purpose SUS flanges and special-shaped flanges. We offer a wide range of sizes, including large-diameter flanges exceeding 2,000 mm, as well as high-pressure WN (butt-welded) and SW (socket-welded) flanges primarily used in chemical plants, JPI standards, JIS types, and more. The image is an example of ultra-thin flanges with a thickness of 5.0T or less and specially processed flanges that we have supplied to Nakamuta Daigo Co., Ltd., which handles a wide range of marine materials. We also accept manufacturing from drawings, so please feel free to consult us. Sales Department Tokyo Office TEL: 03-3777-1581 Nagoya Office TEL: 052-571-3271 Osaka Office TEL: 06-6482-1851 Hiroshima Office TEL: 082-261-5216 Fukuoka Office TEL: 092-273-1960

• Water Treatment
• Pipeline Construction
• Water Supply Facilities