List of 管 products
181～225 item / All 6626 items
Design support that covers a wide range from overview diagrams to hydraulic calculation reports. Performance materials are currently available.
- Water effects and aquariums
- Garden stones, sculptures, fountains, ponds
High-density polyethylene pedestrian passage (pedestrian opening) "EP-Sleeve" - Lightweight, high strength, and a proposal for labor-saving! [Coming soon]
- Formwork material
- Frame construction accessories
- Piping materials (plastic pipes)
Production will start" Polyethylene sleeve / access hole (access port) "EP-Sleeve
Polyethylene Human Passage (Human Passage Opening) EP-Sleeve ■ High Pressure Resistance: Due to its smooth double structure with a corrugated inner surface, it is strong against impacts and external pressure, possessing excellent flat strength. ■ Lightweight Material: Compared to rigid PVC pipes, it is lightweight. It enhances transportation and work efficiency, contributing to "labor-saving" at construction sites. ■ Rust Resistant: Made of high-density polyethylene, it is safe and secure for installation in water areas! ■ Cold and Chemical Resistant: Compared to rigid PVC pipes, it is suitable for installation in extremely cold regions and shows no deterioration against most chemicals. The polyethylene sleeve "accelerates the 'efficiency' of the site with its 'lightweight'!" A material that combines high pressure strength with "lightweight," which leads to direct construction usability. In particular, while rigid PVC pipes weigh about 53 kg/m, the polyethylene sleeve weighs about 17 kg/m, showcasing an overwhelming weight difference! We guarantee a definite improvement in work efficiency at construction sites. Furthermore, it also contributes to reducing the burden on workers and lowering accident risks, enhancing safety!
Achieving overwhelming drainage performance! It demonstrates its capabilities sufficiently over a long period even under harsh conditions!
- Other civil engineering services
2025 Good Design Award" winner! Mitsuba Drain has also been selected as "My Chosen Item.
The announcement of the 2025 Good Design Award (organized by the Japan Design Promotion Association) was made on October 15, 2025. This time, Nihon Doren Co., Ltd. received two Good Design Awards. Additionally, the focused drainage pipe "Mitsuba Doren" was selected for the special selection "My Chosen Item" by the Good Design Award judging committee. It has been highly evaluated as an excellent design that merges traditional wisdom with modern technology.
Processing is possible even outside the processing range! All products undergo air pressure testing after manufacturing.
- Piping materials (copper pipes, cast iron pipes)
- Piping materials (concrete pipes)
- Water and sewerage pipe fittings
You can register and manage other companies' projects based on the information obtained from the buried pipe inquiry business.
- Other Software
Welded steel pipes made of steel plates can be manufactured without lot restrictions and in random lengths. We also accept assembly of prefabricated piping.
- Special Construction Method
- Prefab
- others
A lineup that can be selected to match various fittings for PE pipes.
- Piping Equipment
A lineup of pipe fittings that cater to a wide range of fields! We are currently offering a comprehensive catalog with dimension tables.
- Railway Construction
- Special Construction Method
- others
Regarding the relocation of the Fukuoka office.
As of October 11th, the Fukuoka office has relocated to the address below. Please note that both the phone number and fax number have also changed. We appreciate your continued support. 〒810-0802 Fukuoka Prefecture, Fukuoka City, Hakata Ward, Nakasu Nakajima Town 2-3, Fukuoka Fujiland Building TEL: 092-273-1960 FAX: 092-273-1980
Strong against acids and alkalis, suitable for industrial wastewater! Widely adopted by municipalities across the country.
- Fittings
Lightweight and easy to transport and install! Introducing high-density polyethylene corrugated pipes that improve work efficiency.
- Piping materials (plastic pipes)
![Evolving void tubes [QPF series] al...](https://image.www.ipros.com/public/product/image/226/2000375290/IPROS94400196966681833366.png?w=280&h=280){kind=small}
Invented a completely new evolving void pipe as a replacement for paper void pipes used in fence and guardrail foundations, using the NETIS void wrap method!
- Temporary Construction
![[Super Soil Construction Case] A1 C...](https://image.www.ipros.com/public/product/image/941/2000247443/IPROS2253332865974957287.jpg?w=280&h=280){kind=small}
This is a case of bridge maintenance work (tentative name) for the Hiro Second Bridge and the left bank approach road in Kure City, Hiroshima Prefecture.
- Soil improvement material
- Road construction
- Ground improvement materials
We will create the indoor water supply and hot water supply (header method) piping equipment drawings on your behalf, freeing you from the hassle of the work. We will precut and deliver only the neces...
- CAD for building facilities
- Drawing, tracing, CAD
- Residential CAD
If you provide the drawings to our company's SE, we will create CAD data and pre-cut the resin pipes as needed, which will reduce material costs. We will also pick and deliver them to the site, significantly reducing labor and construction time.
If you send the drawings to Watanabe Pipe upon request, we will create the drawings using the header method/polybutylene pipes, package the total rolls, and deliver them along with the design plans. We pride ourselves on providing services that offer significant benefits to our customers. Please feel free to contact us. ■ Four Points - 75 minutes of time savings!! - Improved construction quality and assurance of building quality - Delivery of design plans and precut materials without additional charges on the usual price - Easy ordering 1. Creation of indoor water supply and hot water piping equipment drawings for single-family homes (header method) 2. Precutting of resin pipes and picking of fittings for delivery 3. Delivery to your desired location within 5 to 7 business days after approval of the design drawings 4. Delivery of water supply and hot water drawings in data format (DXF/JWW/PDF) 5. Design drawings will be stored by our company for 10 years after on-site construction * The product standardly uses Bridgestone's Push Master. ■ Benefits 1. We take on the task of creating design drawings and extracting drawings. 2. Since shipping is done by total roll count, there is no need to hold excess inventory. 3. Delivery of design plans and precut materials to specified locations at the usual price. 4. Storage of design drawings ensures quality and traceability. 5. Provision of drawings improves construction quality on-site.
These are accessories for Matsumoto Industrial's spiral steel pipes and spiral ducts.
- Piping Equipment
A catalog featuring examples of PVC pipe processing is available for free!
- Water Treatment
High-quality conical centrifuge tubes from Tarsons, featuring excellent uniformity and smoothness in container thickness.
- others
LED lamp with glass tube and shatterproof film for oil mist environments (cutting factories)
- Fluorescent Light Type
Please feel free to consult us about anything related to the commercialization and mass production of PVC piping, hydroponic cultivation trays, cultivation panels, and nutrient solution tanks needed f...
- Exterior Materials
![[New Proposal] Proposal for Flangel...](https://image.www.ipros.com/public/product/image/ec3/2000468217/IPROS08842935262150002632.png?w=280&h=280){kind=small}
Achieve flange-less connections with buried piping! Reduce the risk of leaks with the installation of dissimilar pipe connections and shut-off valves!!
- Water and sewerage pipe fittings
Seven methods revive pipelines! A pipeline rehabilitation and repair system using the world's most advanced technology.
- Sanitary fixtures
- Water Supply Facilities
- Renovation and repair methods
![[Construction Example] Interior Rep...](https://image.www.ipros.com/public/product/image/7f2/2000405703/IPROS5987065367045951815.png?w=280&h=280){kind=small}
Can be installed in limited time and limited space! The perfect joint SKX for high-density polyethylene pipes inside buildings!!
- Fittings
- Piping materials (copper pipes, cast iron pipes)
- Piping materials (plastic pipes)
Seismic-resistant and insulated bridge attachment pipes / freeze composite prevention pipes
- Water and sewerage pipe fittings
Introducing the Mitsuba Drain, a buried pipe that plays an active role on the sun-dried floor of the water purification plant!
- Piping materials (copper pipes, cast iron pipes)
2025 Good Design Award" winner! Mitsuba Drain has also been selected as "My Chosen Item.
The announcement of the 2025 Good Design Award (organized by the Japan Design Promotion Association) was made on October 15, 2025. This time, Nihon Doren Co., Ltd. received two Good Design Awards. Additionally, the focused drainage pipe "Mitsuba Doren" was selected for the special selection "My Chosen Item" by the Good Design Award judging committee. It has been highly evaluated as an excellent design that merges traditional wisdom with modern technology.
Cost reduction, design improvement, and procurement of special-sized square pipes are now possible!
- others
Convenient for later installation! PVC flap gate that can be installed by inserting it into existing pipes.
- Piping materials (plastic pipes)
- Watergate
- Port supplies
Focus on information gathering and research and development to supply higher quality and more affordable products that meet market demands!
- Drainage and ventilation equipment
- Fittings
- others
Piping materials that meet the diverse needs of construction methods!
- Piping materials (copper pipes, cast iron pipes)
- Fittings
- Water and sewerage pipe fittings
No welding with the Haze assembly method! For lightweight, durable, low-cost, and short delivery time 'spiral steel pipes/cylindrical forms', trust Suematsu Industry for large-scale production!
- Road facilities
- Piping materials (copper pipes, cast iron pipes)
- Road construction
We will perform calculations for "rehabilitation pipes," an efficient non-excavation method for addressing aging sewer systems!
- Scientific Calculation and Simulation Software
- Analysis and prediction system
- Other Software
Unit price data from Zennihon Publishing is available! Standardization of operations, reduction of man-hours, file management, and solving all issues related to estimation work!
- Other Software
- Cost management and cost estimation software
- addition
For inquiries about low-temperature piping fittings for PL380 and PL450, please contact Benkan Kiko.
- Railway Construction
- Special Construction Method
- others
For seamless stainless steel pipe fittings, contact Benkan Kiko! We accommodate a wide range of items.
- Railway Construction
- Special Construction Method
- others
A specially shaped filter that corresponds to the slope! A strainer filter that can be installed simply by inserting it into the drainage pipe.
- Drainage material
- River construction
- Drainage and water removal
Insert and install into existing PVC pipes! Can be retrofitted. Installation direction can be vertical or horizontal as desired.
- Gutters and U-shaped gutters
- Agricultural civil engineering works
Easy to install and handle, suitable for any location: water intake valves, distribution valves, and water supply valves! Can be connected and extended by covering the outside of PVC pipes. Ideal for ...
- Gutters and U-shaped gutters
- Agricultural civil engineering works
Improving cleaning efficiency! A cleaning machine with dual sponges to remove sand, gravel, and water droplets accumulated in pipes.
- Other civil engineering works
- Water and sewerage pipe fittings
- Sweeping vehicles, grass cutting vehicles, road surface regeneration machines, snow removal machines
PVC pipe end material disposal item, impact resistance, HIVP 65×1900 mm (Aichi, Tochigi, Fukuoka, Mie). This is offered at a low price due to being end material.
- Piping and insulation
Standard of the wave pipe: Independent mountain double pressed pipe
- Bridge Construction
- Dam construction
- Airport facilities
We provide butt-welded pipe fittings that meet customer needs, ranging from general-purpose specifications for general construction to special specifications for specialized plants.
- Water Treatment
- stone
This is a butt-welded pipe fitting compatible with stainless steel pipes for piping (JIS G 3459).
- Piping materials (copper pipes, cast iron pipes)
- Fittings
Notice of Product Price Revision
Dear Sir/Madam, I would like to express my heartfelt congratulations on the continued prosperity of your company. I am sincerely grateful for your unwavering support. I would like to inform you that starting from October 1st, we will be implementing a revised version for stainless steel stub ends (lap joints). We kindly ask for your understanding and cooperation regarding this matter. At Benkan Kiko, we have been striving to reduce costs through the rationalization of our production lines, inventory, and work-in-progress. However, due to the decline in market conditions associated with sluggish demand, it has become challenging to maintain profitability, and we will be revising the prices of certain products. Therefore, we sincerely apologize for any inconvenience this may cause and earnestly request your understanding of the circumstances surrounding this price revision. Sincerely, [Products Subject to Price Revision] 1. Target Product: Stainless steel stub ends (lap joints) 2. Operating Price: New price list to be implemented (attached separately) 3. Effective Date of New Price List: October 1, 2016 *In conjunction with the price revision, we have issued a new price list. Please download it from the related catalog below. End.
This is a water intake valve and drainage outlet for fields (rice paddies) using a 90-degree elbow. The 90-degree elbow has been threaded, allowing for easy operation (rotation).
- Watergate
- Drainage material
- Gutters and U-shaped gutters
At Benkan Kiko, we can offer proposals for [forged steel welded pipe fittings] that accommodate a wide range of special specifications and steel types.
- Prefab
- others
We have uploaded an introduction page about welded fittings for piping made of forged steel.
At Benkan Kiko, we manufacture various shapes of forged steel products according to our customers' applications. Utilizing our long-standing manufacturing technology for welded pipe fittings and management technology for forged products, we are able to supply a wide range of products. For more details, please check the related product page.
The effect lasts for about 5 years*! By applying it in places where various people gather, such as offices and schools, it protects "companies," "employees," and "users"!
- Plastering and painting work
Clamp pipe made of special materials suitable for use in seawater, high-temperature environments, and chemical substances.
- Work tools
- Other fittings