Piping Product List and Ranking from 51 Manufacturers, Suppliers and Companies | IPROS

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.

Piping Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.

  1. ISHIGURO Co.,Ltd. Tokyo//Trading company/Wholesale
  2. null/null
  3. ライネックス Tokyo//Building materials, supplies and fixtures manufacturers
  4. 4 Deson Japan Tokyo//Building materials, supplies and fixtures manufacturers
  5. 5 ユウアイ Hokkaido//others
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Piping Product ranking

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.

  1. Piping static electricity measures piping bonding "Earth Bond" ISHIGURO Co.,Ltd.
  2. Underground buried piping for fuel use "UPP resin double piping"
  3. Rynex Corporation Piping Catalog '20 ライネックス
  4. 4 Corrugated Type Stainless Steel Piping (Single and Double Piping) Deson Japan
  5. 5 High-density polyethylene flexible piping "UPP double piping" Deson Japan

Piping Product List

1～30 item / All 125 items

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New proposals for high-pressure piping: "40%", "1/5", "7 times"!

New proposals for high-pressure piping: "40%", "1/5", "7 times"!

【Proposal Materials Free of Charge】 A high-pressure valve that combines the compactness of a screw connection with the ease of flange connection.

The "BKO Series" is flange-less, allowing for easy attachment and detachment of valves even after piping, simply by tightening a slide nut without using bolts. Additionally, the compact union joint with ORS connection using O-rings enables direct attachment to hoses and welding of pipes. ○ Features 【40% CUT!】 Achieves space-saving and weight reduction 【Reduced to 1/5!】 Enables piping in a short time 【Less than 1/2!】 Reduces leak points 【Increased by 7 times!】 Cv value (maximum) *For proposal details, please download the catalog or contact us.

  • others
  • Piping

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Cooling water piping of a certain wire rod manufacturing plant

Cooling water piping of a certain wire rod manufacturing plant

Effect verification of red rust turning into black rust.

This factory has only been in operation for 8 years, but due to the influence of bacteria growing inside the pipes, the formation of red rust has progressed significantly, leading to frequent leaks, and the pipes were updated each time. As a countermeasure, we installed the "NMR Pipe Protector." Since then, there have been no occurrences of leaks, and the analysis results of the amount of black rust showed that the percentage of black rust in the rust before installation was 1.9%, which increased to 66.9% after 14 months of installation, proving the blackening of red rust.

  • Piping Equipment
  • Piping

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Cooling water piping for large commercial facilities

Cooling water piping for large commercial facilities

Effect verification of red rust turning into black rust.

Due to significant concerns about the corrosion of the cooling water piping, we installed the "NMR Pipe Protector" when the facility was 43 years old as a countermeasure. Analysis of the amount of black rust after installation demonstrated that the "NMR Pipe Protector" effectively prevents the progression of red rust and promotes the formation of black rust. The amount of black rust before installation was 2.0%, but it increased to 48.2% after 10 months of installation, confirming the reduction of red rust to black rust. If we continue to use the "NMR Pipe Protector" in the future, this piping will not require replacement as long as external corrosion does not occur.

  • Water Treatment Plant
  • Piping

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Large office building hot water piping

Large office building hot water piping

Effect verification of red rust turning into black rust.

Due to significant concerns about the corrosion of the hot water piping in this facility, an "NMR Pipe Protector" was installed as a countermeasure when the building was 38 years old. Analysis results of the amount of black rust after installation demonstrated that the "NMR Pipe Protector" effectively prevents the progression of red rust and promotes the formation of black rust. The amount of black rust before installation was 0.9%, but it increased to 16.9% after 6 months of actual operation, proving the reduction of red rust to black rust. In the future, if all the red rust in this piping turns into black rust, piping replacement will not be necessary as long as external corrosion does not occur.

  • Piping Equipment
  • Piping

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Powder-liquid mixing piping "Damatri"

Powder-liquid mixing piping "Damatri"

Achieving the "mixing" of various materials such as carbon, resin, ceramics, and thickeners!

"Damatri" is a powder-liquid mixing pipe that allows for the mixing and dissolution of materials that tend to clump together with just one pipe. It reduces the conventional stirring time by one-third, achieving improved product quality. Additionally, it can be easily introduced by simply connecting the pipe to existing lines. Please feel free to contact us when you need assistance. 【Features】 ■ Time reduction ■ Clump improvement ■ Easy connection *For more details, please refer to the PDF document or feel free to contact us.

  • Piping and insulation
  • Piping

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Toyonaka Hot Research Institute Co., Ltd. Comprehensive Catalog

Toyonaka Hot Research Institute Co., Ltd. Comprehensive Catalog

Toyonaka Hot Laboratory Co., Ltd. General Catalog

As a specialized manufacturer of piping that includes temperature control for liquids and gases, we have a proud track record of over 40 years since our establishment. In June 2002, we obtained the international quality standard ISO 9001 certification, and our products also contribute to evaluation equipment for the next-generation energy "fuel cells." The characteristics of our products include maintaining quality and ensuring productivity and safety in temperature management for industrial components, piping, tanks, and more. We are committed to developing products tailored to our customers' needs, such as thermal transfer, freeze prevention, and high-pressure specifications, while also focusing on providing the most suitable products for each site and application.

  • media
  • Piping

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【Specification Introduction】PFA (Fluororesin) Lined Piping & Fittings

【Specification Introduction】PFA (Fluororesin) Lined Piping & Fittings

Introducing a table that includes standard specifications, applicable standards, liner molding methods, and more!

We would like to introduce the specifications of the PFA (fluororesin) lining pipes and fittings that we handle. Starting with "lining pipes," we provide a table that includes standard specifications such as "90° elbow," "blind flange," applicable standards, liner molding methods, materials for steel housing, and codes. Please use this information for product selection. 【Products Offered】 ■ Lining Pipes ■ 90° Elbows ■ 45° Elbows ■ Tees ■ Reducer Tees *For more details, please refer to the PDF document or feel free to contact us.

  • others
  • Piping materials (plastic pipes)
  • Piping

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Low-cost, ultra-wear-resistant piping "FRP-coated wear-resistant bend pipe"

Low-cost, ultra-wear-resistant piping "FRP-coated wear-resistant bend pipe"

Are you experiencing issues such as wear during the air transport or slurry transport of powder particles, which has caused holes to form in the piping?

This product is a low-cost, ultra-wear-resistant bend pipe created from an idea. It can be easily and quickly tough-coated for a wide range of bend pipe dimensions. The "ultra-wear-resistant bend pipe" we offer is a "wear-resistant bend pipe" that has a wear-resistant metal welded onto the outer circumference of the base steel pipe, with a fiber-reinforced plastic coating layer formed around it. [Reference Example] Before introduction: A 200A SGP elbow pipe developed holes due to wear in less than a year. Annual costs associated with maintenance and inspections were incurred. After introduction: By adopting the ultra-wear-resistant bend pipe, the lifespan of the elbow pipe was extended to four years, leading to a reduction in total maintenance and inspection costs. [Features] ■ Excellent impact resistance ■ Ultra wear resistance ■ Significant reduction in manufacturing costs ■ Reduction in total equipment costs ■ No need for dimensional changes *For more details, please refer to the PDF materials or feel free to contact us.

  • Piping Equipment
  • Piping

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Inoac Co., Ltd. Living Environment Company Profile

Inoac Co., Ltd. Living Environment Company Profile

Borderless & Endless. Towards being a total supplier of living environments.

Energy-saving measures, recycling, and reduced construction time... The evolution of living environment equipment in recent years has been remarkable, and the quality demanded of us is becoming increasingly stringent. Inoac Corporation focuses not only on improving the quality of traditional piping and insulation products but also on developing products that leverage the characteristics of other materials, such as high pressure resistance and high airtightness. We propose system products and services that excel in installation and maintenance. Based on this total support system concept, we are actively expanding into various markets with a focus on all fields, creating the future of living environments through technology and ideas, and providing more people with more comfortable living spaces. For more details, please contact us or refer to our catalog.

  • Work tools
  • Piping

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Stainless steel prefabricated piping

Stainless steel prefabricated piping

Prefabricated piping components that are optimal for all piping to achieve efficient piping work!

MIE Tech Co., Ltd.'s prefabricated piping is ideal for all piping work that achieves efficient piping operations. High quality, low cost, and short delivery times. Since most of the component manufacturing is done at our factory, we can eliminate welding omissions on site, allowing for easy and quick piping work. For more details, please download the catalog or contact us.

  • Sanitary fixtures
  • Crane and others
  • Prefab
  • Piping

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Stainless Steel Prefabricated Piping *Free Download of Comprehensive Catalog as a Gift

Stainless Steel Prefabricated Piping *Free Download of Comprehensive Catalog as a Gift

Incredible! The number of welds has been reduced from 8 to 3! By reducing the number of joints and welding work, piping costs have been cut by 50%! The welding will be performed by JIS certified welders.

The prefabricated piping from MIE Tech Co., Ltd. is ideal for all types of piping work that achieves efficient piping operations. High quality, low cost, and short delivery times. Since most of the component manufacturing is done at our factory, we can eliminate welding deficiencies on-site, allowing for easy and quick piping work. *For more details, please download the catalog or contact us directly.*

  • Sanitary fixtures
  • Steel
  • Prefab
  • Piping

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Stainless steel fire extinguishing system piping

Stainless steel fire extinguishing system piping

Durable and lightweight! Firefighting equipment piping that improves workability and safety while being environmentally friendly.

Japan Engineering's "Stainless Steel Firefighting Equipment Piping" utilizes stainless steel pipes for general piping, achieving longer lifespan and reduced weight, while improving workability and safety in firefighting equipment piping. This product can be used as a substitute for the carbon steel pipes used in conventional delivery pipes for S/40 pressure piping, eliminating deterioration due to rust and providing a lighter option. Due to the difference in flow coefficient, it is possible to reduce the pipe diameter, which can lower material and labor costs. 【Features】 ■ Possibility of reducing pipe diameter ■ Improved durability, extended lifespan, and reduced aging deterioration ■ Enhanced workability and safety through significant weight reduction ■ Firefighting certification obtained *For more details, please refer to the PDF document or feel free to contact us.

  • Piping Equipment
  • Fire extinguishing equipment
  • Piping

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Stainless steel sprinkler piping

Stainless steel sprinkler piping

Support for on-site population reduction! We propose considering the looping of piping and calculating friction losses.

Japan Engineering's "Stainless Steel Sprinkler Piping" significantly improves construction efficiency by changing from the traditional carbon steel pipe (SGP) threaded joint method to a housing joint connection method using general-purpose stainless steel pipes (Su). It can reduce the overall construction cost by 5% to 10%. We also propose considering piping loops and calculating friction losses. **Benefits of Switching to Stainless Steel Piping** - No waste generated on-site due to factory processing, and no additional space required. - Easy installation with just two bolts, making it possible for unskilled workers to install. - Improved durability. - Size reduction of the diameter is possible due to differences in flow coefficient. *For more details, please refer to the PDF document or feel free to contact us.*

  • Piping materials (copper pipes, cast iron pipes)
  • Piping and insulation
  • Piping materials (concrete pipes)
  • Piping

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Takachiho Industries - Canning and Piping

Takachiho Industries - Canning and Piping

Accumulating achievements and receiving high evaluations.

Among the steel structures manufactured by our company, a large portion consists of various types of fabrication and piping used in factory equipment and plant construction. Since our founding, we have steadily built up our track record, and now we have undertaken numerous large-scale projects. The products we have handled are not only used within Oita Prefecture but also in some cases abroad. We respond promptly to inquiries, so please feel free to contact us.

  • Reinforced concrete construction
  • Foundation construction
  • Piping

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[Business Introduction] Design, Production, Construction, and Testing of Piping

[Business Introduction] Design, Production, Construction, and Testing of Piping

The piping expert Union responds to various needs related to piping for various plants, machinery, equipment, and instrumentation.

Since our establishment, we have been engaged in high-pressure gas piping as our main business, working on various piping construction and equipment assembly in fields such as semiconductors, nuclear power, chemicals, food, and pharmaceuticals. We provide comprehensive process management from design and construction to inspection and maintenance, accommodating various piping facilities. ○ Piping Equipment Construction For all your piping equipment needs, including high-pressure, special gas, and chemical piping, trust Union. [Examples] High-pressure gas piping, special gas piping, gas yard piping, general stainless steel piping, etc. ○ Equipment and Device Manufacturing We manufacture the best and most suitable equipment and devices tailored to our customers' needs and environments. [Examples] Cylinder cabinets, cylinder manifolds, integrated valve boxes, etc. ○ Equipment Maintenance Leave the after-service, including quality checks and inspections, to us after installation. [Examples] Maintenance and preservation of gas supply equipment, modification, renewal, and removal work of gas supply piping, etc. ○ Material and Equipment Sales We offer a wide range of piping parts, including stainless steel pipes and valves, for sale. [Examples] Pipe materials and fittings, pressure regulators and valves, connecting pipes, filling pipes, etc. For more details, please download our catalog or contact us.

  • others
  • Piping

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MC type double piping

MC type double piping

Standard of Double Tubes

With the revision of the Water Quality Pollution Prevention Act by the Ministry of the Environment, the patented MC-type double piping system, which is effective as a safety measure, allows for visual confirmation of the leak location in the event of a hazardous substance leak and enables the recovery of the leaked material. Additionally, since all products are double-structured, the construction days and costs are significantly reduced.

  • Piping materials (copper pipes, cast iron pipes)
  • Piping

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General piping and oil-resistant "Toyoring Hose"

General piping and oil-resistant "Toyoring Hose"

Durability and softness that lasts! The reinforcement material is made of special PET resin, making it easy to cut with scissors. [Looking for sales partners]

The "Toyoring Hose" has excellent recovery even when crushed and is a general piping suitable for oil resistance, making it difficult for fluids to stop. The reinforcing material is a special PET resin, allowing for easy cutting with scissors, excellent workability, and no need for separate disposal. It has excellent oil resistance and a long lifespan. 【Features】 ■ Good flexibility, easy to pipe ■ Excellent transparency, allowing for fluid visibility, ensuring safety and peace of mind ■ Compliant with RoHS2 revised regulations *For more details, please refer to the PDF document or feel free to contact us. 【Looking for Sales Partners】 We will sell your products! Can we support you in expanding your sales channels?

  • Fittings
  • Piping

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General piping and oil-resistant "Toyospring Hose"

General piping and oil-resistant "Toyospring Hose"

Excellent transparency, allows for fluid inspection, safe and secure! Introducing long-lasting oil-resistant general piping [Sales partners wanted].

"Toyospring Hose" is a general piping for oil resistance that is strong against bending and crushing, and allows fluids to flow easily. It has excellent oil resistance, is less likely to harden, and has a long lifespan. It is highly transparent, allowing for fluid visibility, ensuring safety and peace of mind. [Features] ■ A wide variety of sizes ■ Strong against bending and crushing, suitable for suction applications ■ Compliant with RoHS2 revised regulations *For more details, please refer to the PDF document or feel free to contact us. [Looking for Sales Partners] We will sell your products! Can we support you in expanding your sales channels?

  • Fittings
  • Piping

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Rynex Corporation Piping Catalog '20

Rynex Corporation Piping Catalog '20

A large number of temporary piping for civil engineering works, concrete pumping pipes, etc. are featured! We propose optimization of temporary piping systems!

This catalog features the piping handled by Rynex Co., Ltd. Starting with the high-strength steel pipe "Hi-Ten6," which has low carbon content and high manganese content to enhance strength and hardness, the lineup includes "valves," "pipe hangers," and "concrete pumping pipe equipment (taper pipes)." Please use this for selecting products. [Contents] ■ Temporary piping for civil engineering work ■ Concrete pumping pipes ■ Steel pipe specifications table ■ Company overview *For more details, please refer to the PDF document or feel free to contact us.

  • Other civil engineering works
  • Piping materials (concrete pipes)
  • Piping

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General temporary piping

General temporary piping

Adopted for shield construction in the Aqua Line and the Tokyo Metropolitan Subway Oedo Line! Used for applications such as water and air.

"General temporary piping" is primarily used in various construction works such as tunnels, dams, shield projects, thrusting, and foundations, and is a product intended for applications involving water, air, etc. For the slurry pressure delivery and discharge pipes in shield construction, the use of Green Line SUPER5 (GLP-S1, M1, W1), which has excellent wear resistance and is suitable for high pressure, is recommended. We also manufacture fittings, joints, colorings, flanges, transfer hoses, suction hoses, piping bands, pipe hangers, and other related products. [Examples of products handled] ■ General temporary piping (Green Line, Green Line Super) ■ Thrust construction piping specifications (S0, S1, M) ■ Mortar and grout spraying piping equipment (Green Line S1) *For more details, please refer to the PDF materials or feel free to contact us.

  • Piping materials (concrete pipes)
  • Piping

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Vacuum piping! NW flange ball valve 'CSH-NW'

Vacuum piping! NW flange ball valve 'CSH-NW'

Manual valve for NW flange connection vacuum piping, for exhaust gas devices and pollution control devices!

The "CSH-NW" is a ball valve with an NW flange connection designed for easy removal during piping and maintenance due to its lightweight and compact design. The gland section features a double structure with an O-ring and gland packing, ensuring excellent sealing performance. It can also be automated with air drive. 【Features】 ■ Lightweight and compact design ■ Easy removal during piping and maintenance ■ Gland section with a double structure of O-ring and gland packing ■ Excellent sealing performance ■ Can be assembled with our actuator without a yoke *For more details, please refer to the PDF document or feel free to contact us. Semiconductors, semiconductor manufacturing equipment.

  • Work tools
  • Piping

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P&D Japan Co., Ltd. Various piping *Product catalog available

P&D Japan Co., Ltd. Various piping *Product catalog available

We offer a wide variety of types and quality to meet diverse needs!

This catalog is a product catalog for various piping systems of a company that mainly imports and sells underground resin piping (UPP system piping) and environmental-related products. We offer a diverse lineup to choose from based on applications, including primary, secondary, access covers, sumps, chambers, and more. [Contents] - Primary - Primary fittings - Secondary - Secondary fittings - Access covers, sumps, chambers, etc. *For more details, please refer to the catalog or feel free to contact us.

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  • Piping

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Underground buried resin piping "UPP system piping"

Underground buried resin piping "UPP system piping"

Highly earthquake-resistant! Underground buried resin piping with joint connections that are leak-free due to electric fusion.

The "UPP System Piping" offers a variety of underground fuel pipes that can be used for different types of fuels. The primary pipe (with liner) has a single-layer structure made of high-density polyethylene (PE100) and is lined with EVOH on the inside. The secondary pipe has a single-layer structure made of high-density polyethylene (PE100) without EVOH lining and is used as a protective pipe for the primary pipe. The double pipe is a piping system that incorporates the primary pipe with a liner and the protective pipe, designed to be cut to the required length, allowing for installation without the need for piping connections in the buried section. 【Features】 ■ High resistance to damage (strong seismic resistance) ■ No leakage due to electric fusion connections of joints ■ No corrosion due to the material being resin (high-density polyethylene) ■ Product lifespan of 50 years (30-year manufacturer warranty) ■ Easy installation reduces construction costs compared to existing projects (steel pipes) *For more details, please refer to the catalog or feel free to contact us.

  • Piping and insulation
  • Piping materials (plastic pipes)
  • Piping

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Corrugated Type Stainless Steel Double Pipe for Transporting Toxic Liquids and Gases

Corrugated Type Stainless Steel Double Pipe for Transporting Toxic Liquids and Gases

Permanently monitorable! Stainless steel piping suitable for the transport of toxic liquids and gases.

The "Corrugated Type Stainless Steel Double Pipe" is suitable for transporting toxic liquids and gases, such as harmful chemicals specified in the Water Pollution Prevention Act. To eliminate the need for fittings, we deliver the pipes in the lengths required by the user. (Depending on the diameter of the pipe, lengths of up to 1000m are possible.) Additionally, it is also possible to pre-install connection components such as flanges at the factory before delivery. 【Product Lineup】 ■ Flexwell Safety Pipe - A flexible, permanently monitorable double-structured pipe system ■ Secon-X - A flexible, permanently monitorable double-structured pipe system ■ LPG - A corrugated type that is flexible and has additional reinforcement *For more details, please refer to the catalog or feel free to contact us.

  • Piping and insulation
  • Piping

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Corrugated type stainless steel piping (single and double piping)

Corrugated type stainless steel piping (single and double piping)

Widely adopted in the LNG field! Suitable for the transfer of chemical agents and solvents! Pressure resistance and flexibility suitable for both exposed and buried applications.

The "Corrugated Type Stainless Steel Piping" is a product suitable for the transportation of gases, water, and chemicals, including LNG (liquefied natural gas). It consolidates LNG flow and BOG return, allowing for a unified piping system. No welding work is required, contributing to reduced construction time and cost! Additionally, it offers flexibility and pressure resistance, making it suitable for underground use. 【Features】 - A double-piping type that accommodates highly toxic solvents is also available. - Can be delivered in your desired length (up to 1000m depending on diameter). - Comprehensive leak prevention measures can be implemented with long-length orders. - Shipped after thorough inspection of all units. *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

  • Piping and insulation
  • Piping

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Stainless Steel Piping for Biogas

Stainless Steel Piping for Biogas

Economical with materials that excel in durability! An effective heating system for biogas fermentation tanks.

"Stainless Steel Piping for Biogas" is an effective heating system for biogas fermentation tanks. Niloflex offers single-wall corrugated piping made of stainless steel, with lengths that can be freely selected. Connectors allow for the joining of pipes through optimized fittings. Utilizing graphite filling technology (GRAPA), this connector system reduces installation time without the need for welding work. 【Features】 ■ Single-wall corrugated piping made of stainless steel ■ Length can be freely selected ■ Pipe joining possible with optimized fittings ■ Utilizes graphite filling technology (GRAPA) ■ Reduces installation time without the need for welding work *For more details, please refer to the PDF document or feel free to contact us.

  • Piping and insulation
  • Piping

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Corrugated type stainless steel piping (single piping / double piping)

Corrugated type stainless steel piping (single piping / double piping)

Examples of biogas fermentation tank systems are also provided. High safety measures for gas and chemical transfer leakage prevention.

At P&D Japan, we handle "corrugated type stainless steel piping" characterized by high safety. 1. Single piping - The temperature of hot water passing through the piping (above 40 degrees) is transmitted through thermal conduction → fermentation progresses. - The piping is spiral-shaped → it has a larger surface area and is easier to transmit heat. - Despite being made of iron, it is flexible. ⇒ In addition to contributing to the progress of fermentation, it is suitable for fermentation tanks and is utilized in "effective heating systems for biogas fermentation tanks." (Examples are summarized in the PDF. Please download it.) 2. Double piping - Supports the transport of toxic liquids and gases, such as harmful chemicals specified by the Water Pollution Control Act. - Can be delivered in the required lengths, eliminating the need for fittings. - Utilizes the gap between the primary and secondary pipes for leak detection and prevention. - High-spec design that can be utilized in facilities where operational downtime due to external factors must be absolutely avoided. ⇒ Used in data centers and other applications. ■ Adoption results Teijin DuPont Film Co., Ltd., NEXCO, and others. *For more details, please download the PDF.

  • Piping and insulation
  • Piping

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High-density polyethylene flexible piping "UPP double piping"

High-density polyethylene flexible piping "UPP double piping"

Significantly reduce fuel piping burial costs without the need for trenches! High pressure resistance with no corrosion or electrolysis. There will also be a presentation by Kajima Corporation.

The "UPP Double Pipe" is a flexible piping made of high-density polyethylene resin, which incorporates a primary pipe with a liner and a protective pipe in advance. It can be cut according to the required length, and generally does not require pipe connections in the buried sections. It adopts "electrofusion joining," which does not use fittings and minimizes the risk of leakage during connection. It is resistant to corrosion and galvanic corrosion, ensuring safety even when buried, and exhibits excellent resistance to absorption and permeation of gasoline and alcohol-blended fuels. Installation of a leakage detection system is also possible. Piping can be buried underground directly without a trench, significantly contributing to the reduction of construction time and costs for fuel piping installation. ★ You can view a PDF comparison document that clearly shows the benefits at a glance! 【Features】 ■ Allows for underground piping installation without a trench ■ Significantly reduces installation labor and costs ■ Offers pipes up to 100 meters in length ■ Supports constant monitoring with a leakage detection system ◎ Kajima Corporation will present on this product at the National Conference of the Electrical Equipment Society! * For details, please refer to the PDF or feel free to contact us. * We also handle "corrugated type stainless steel piping," which is characterized by high safety.

  • Piping and electrical wiring materials
  • Piping

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