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  1. Home
  2. Ferrous/Non-ferrous metals
  3. ベンカン機工
Ferrous/Non-ferrous metals
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ベンカン機工

capital10000Ten thousand
number of employees402
addressGunma/Ota-shi/5-1, Rokusengoku-Cho, Ota-City, Gunma, 379-2305, JAPAN
phone03-3777-1547
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last updated:Jan 05, 2026
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  • Company information
  • Products/Services(97)
  • catalog(16)
  • news(28)

ベンカン機工 Company Overview

We support people's lives through the lifelines of the world.

From residential water supply and hot water piping to massive pipelines in large-scale plants, piping that supports daily life is spread all over the world. Benkan Kiko Co., Ltd. is involved in the manufacturing of welded pipe fittings, which are essential piping components. We provide optimal products tailored to the piping environment (design, usage conditions, etc.) and construction circumstances, not only for general building water supply and hot water piping but also for power plants, gas plants, refineries, oil and chemical plants, shipbuilding, and more, where strict quality standards are required.

Business Activities

The "welded pipe fittings," which are the origin of Benkan Kiko, are designed for permanent joining of piping by welding pipes together, and can be said to be the most historically established, recognized, and trusted method of pipe joining. Benkan Kiko will continue to respond to our customers' needs.

Recommended information

Welded pipe fittings for plants *JIS (Japanese Industrial Standards) products

Welded pipe fittings for plants *JIS (Japanese Industrial Standards) products

A lineup of pipe fittings that cater to a wide range of fields! We are currently offering a comprehensive catalog with dimension tables.

Our "Welded Pipe Fittings" are manufactured in JIS-certified and ISO9001-certified factories, and are actively used in a wide range of fields from infrastructure to civilian applications, including thermal power generation, geothermal power generation, oil refining, city gas, waste incineration plants, water purification plants, construction, pharmaceutical plants, shipbuilding, papermaking, and nuclear power generation. Using the metal plastic processing technology and welding technology we have cultivated over many years, along with our quality assurance system, we provide high-quality products and assist with piping design and cost reduction. ★ We are currently offering a "Comprehensive Catalog with Dimension Tables" that includes a rich lineup of welded pipe fittings for download! [Contents of the Comprehensive Catalog (partial)] ◎ Types of welded pipe fittings ◎ Dimensional tolerances for welded pipe fittings ◎ Dimension tables for welded pipe fittings Elbows (long, short / large diameter elbows (long, short) T (same diameter, different diameter) / large diameter T (same diameter, different diameter) Reducers (concentric, eccentric) / large diameter reducers (concentric, eccentric) Caps / stub ends (lap joints)

Products/Services (97)

This is an explanation of the welded pipe fittings PT370 and PG370. product image
This is an explanation of the welded pipe fittings PT370 and PG370.
[Case Study] Large-Diameter Plated Products for Air Conditioning Equipment Piping in Architecture product image
[Case Study] Large-Diameter Plated Products for Air Conditioning Equipment Piping in Architecture
Welded pipe fittings finished with buff polishing. product image
Welded pipe fittings finished with buff polishing.
Welding steel pipes for piping (custom lengths and short pipes are also available) product image
Welding steel pipes for piping (custom lengths and short pipes are also available)

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catalog(16)

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Hardness testing of various steel materials

Hardness testing of various steel materials

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Charpy impact test with various steel materials.

Charpy impact test with various steel materials.

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Duplex Stainless Steel Welded Pipe Fittings Leaflet

Duplex Stainless Steel Welded Pipe Fittings Leaflet

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Tensile testing of various steel materials

Tensile testing of various steel materials

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news(28)

We have revised the four types of price lists.

  • CATALOG

We have revised the price lists for the following welded pipe fittings from Benkan Kiko. Thank you for your understanding. - "Price List for Steel Butt-Welded Pipe Fittings for General Piping (FSGP)" - "Price List for Steel Butt-Welded Pipe Fittings for Piping PT" - "Price List for Steel Butt-Welded Pipe Fittings for Piping PT (Galvanized)" - "Price List for Stainless Steel Butt-Welded Pipe Fittings (SUS)" You can download and view each price list from the link below. If you would like a hard copy of the price list, please request it through the contact information at the bottom.

May 23, 2022

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LATERAL.jpg

We have launched a contracted analysis service for FEM (Finite Element Method).

  • PRODUCT

Benkan Kiko has started offering services such as strength analysis using FEM (Finite Element Method). For more details, please check the introduction page. * A YouTube video of the "FEM analysis sample of joints" is also available.

Dec 09, 2021

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We have updated the Benkan Kiko Company profile.

  • CATALOG

We have updated the company profile of Benkan Kiko. *This is the May 2020 edition. Sales figures, number of employees, and other information have been updated. You can download and view the new company profile from the "Related Catalogs" section below.

May 13, 2020

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Detailed information

Company name ベンカン機工
number of employees402
Contact addresspostalcode 379-2305 Gunma/ Ota-shi/ 5-1, Rokusengoku-Cho, Ota-City, Gunma, 379-2305, JAPAN View on map TEL:03-3777-1547 FAX:03-3777-1567
Business LocationsClick here for the list
Industry Ferrous/Non-ferrous metals
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