iPROS Manufacturing
  • Search for products by classification category

    • Electronic Components and Modules
      Electronic Components and Modules
      62242items
    • Machinery Parts
      Machinery Parts
      76109items
    • Manufacturing and processing machinery
      Manufacturing and processing machinery
      102213items
    • Scientific and Physics Equipment
      Scientific and Physics Equipment
      36551items
    • Materials
      Materials
      37917items
    • Measurement and Analysis
      Measurement and Analysis
      55220items
    • Image Processing
      Image Processing
      15430items
    • Control and Electrical Equipment
      Control and Electrical Equipment
      54833items
    • Tools, consumables, and supplies
      Tools, consumables, and supplies
      65779items
    • Design and production support
      Design and production support
      12696items
    • IT/Network
      IT/Network
      45882items
    • Office
      Office
      14195items
    • Business support services
      Business support services
      26606items
    • Seminars and Skill Development
      Seminars and Skill Development
      6622items
    • Pharmaceutical and food related
      Pharmaceutical and food related
      34289items
    • others
      75446items
  • Search for companies by industry

    • Manufacturing and processing contract
      7342
    • others
      4997
    • Industrial Machinery
      4455
    • Machine elements and parts
      3352
    • Other manufacturing
      2884
    • Trading company/Wholesale
      2670
    • IT/Telecommunications
      2572
    • Industrial Electrical Equipment
      2321
    • Building materials, supplies and fixtures
      1817
    • software
      1671
    • Electronic Components and Semiconductors
      1591
    • Resin/Plastic
      1502
    • Service Industry
      1486
    • Testing, Analysis and Measurement
      1134
    • Ferrous/Non-ferrous metals
      990
    • environment
      698
    • Chemical
      643
    • Automobiles and Transportation Equipment
      593
    • Printing Industry
      514
    • Information and Communications
      470
    • Consumer Electronics
      413
    • Energy
      337
    • Rubber products
      318
    • Food Machinery
      308
    • Optical Instruments
      282
    • robot
      276
    • fiber
      255
    • Paper and pulp
      231
    • Pharmaceuticals and Biotechnology
      174
    • Electricity, Gas and Water Industry
      168
    • Warehousing and transport related industries
      149
    • Glass and clay products
      138
    • Food and Beverage
      132
    • CAD/CAM
      125
    • Medical Devices
      111
    • Educational and Research Institutions
      111
    • retail
      108
    • Ceramics
      98
    • wood
      86
    • Transportation
      84
    • Petroleum and coal products
      66
    • Medical and Welfare
      62
    • Shipbuilding and heavy machinery
      51
    • Aviation & Aerospace
      49
    • equipment
      43
    • Fisheries, Agriculture and Forestry
      42
    • Materials
      34
    • Research and development equipment and devices
      33
    • Public interest/special/independent administrative agency
      32
    • self-employed
      24
    • Government
      23
    • Mining
      17
    • cosmetics
      16
    • Finance, securities and insurance
      15
    • Restaurants and accommodations
      10
    • Individual
      10
    • Police, Fire Department, Self-Defense Forces
      7
    • Laboratory Equipment and Consumables
      5
    • Raw materials for reagents and chemicals
      4
    • Contracted research
      3
  • Special Features
  • Ranking

    • Overall Products Ranking
    • Overall Company Ranking
Search for Products
  • Search for products by classification category

  • Electronic Components and Modules
  • Machinery Parts
  • Manufacturing and processing machinery
  • Scientific and Physics Equipment
  • Materials
  • Measurement and Analysis
  • Image Processing
  • Control and Electrical Equipment
  • Tools, consumables, and supplies
  • Design and production support
  • IT/Network
  • Office
  • Business support services
  • Seminars and Skill Development
  • Pharmaceutical and food related
  • others
Search for Companies
  • Search for companies by industry

  • Manufacturing and processing contract
  • others
  • Industrial Machinery
  • Machine elements and parts
  • Other manufacturing
  • Trading company/Wholesale
  • IT/Telecommunications
  • Industrial Electrical Equipment
  • Building materials, supplies and fixtures
  • software
  • Electronic Components and Semiconductors
  • Resin/Plastic
  • Service Industry
  • Testing, Analysis and Measurement
  • Ferrous/Non-ferrous metals
  • environment
  • Chemical
  • Automobiles and Transportation Equipment
  • Printing Industry
  • Information and Communications
  • Consumer Electronics
  • Energy
  • Rubber products
  • Food Machinery
  • Optical Instruments
  • robot
  • fiber
  • Paper and pulp
  • Pharmaceuticals and Biotechnology
  • Electricity, Gas and Water Industry
  • Warehousing and transport related industries
  • Glass and clay products
  • Food and Beverage
  • CAD/CAM
  • Medical Devices
  • Educational and Research Institutions
  • retail
  • Ceramics
  • wood
  • Transportation
  • Petroleum and coal products
  • Medical and Welfare
  • Shipbuilding and heavy machinery
  • Aviation & Aerospace
  • equipment
  • Fisheries, Agriculture and Forestry
  • Materials
  • Research and development equipment and devices
  • Public interest/special/independent administrative agency
  • self-employed
  • Government
  • Mining
  • cosmetics
  • Finance, securities and insurance
  • Restaurants and accommodations
  • Individual
  • Police, Fire Department, Self-Defense Forces
  • Laboratory Equipment and Consumables
  • Raw materials for reagents and chemicals
  • Contracted research
Special Features
Ranking
  • Overall Products Ranking
  • Overall Company Ranking
  • privacy policy
  • terms of service
  • About Us
  • Careers
  • Advertising
  1. Home
  2. Automobiles and Transportation Equipment
  3. セイエン
Automobiles and Transportation Equipment
  • Added to bookmarks

    Bookmarks list

    Bookmark has been removed

    Bookmarks list

    You can't add any more bookmarks

    By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

    Free membership registration

セイエン

EstablishmentApril 1961
capital500Ten thousand
number of employees40
addressHiroshima/Kure-shi/1-5-5 Watocho, Onomichi City
phone0823-51-2644
  • Official site
last updated:Jul 29, 2025
セイエンlogo
  • Contact this company

    Inquiry Form
  • Before making an inquiry

    Download Profile
  • Company information
  • Products/Services(4)
  • catalog(4)
  • news(4)

セイエン Company Overview

A company that inherits the technology to connect.

A city that has developed alongside the sea, Kure City in Hiroshima Prefecture. Known as the city where the battleship Yamato was built, it is said to have been a place where ships for the envoys to Tang China were constructed in ancient times. Additionally, there is a legend from the Heian period that Taira no Kiyomori excavated the Onado Strait in just one day. Founded in this city, where history and legends are intertwined with reliable craftsmanship, our company has reached its 64th year specializing in pipe processing for metal piping parts used in automobiles and machinery. Our unique bending technology, which does not break even with extremely small radii, enables piping in the shortest route within limited spaces. We imbue the pipes that connect parts with our wishes for safety and our unique technology. We support Japan's manufacturing with techniques that only we can provide.

Business Activities

Manufacturing of metal piping components for automobiles and machinery.

Recommended information

Products/Services (4)

High airtightness joining technology "Airtight Projection Welding" product image
High airtightness joining technology "Airtight Projection Welding"
Leave it to us for cost reduction! High-precision R-bent pipe processing. product image
Leave it to us for cost reduction! High-precision R-bent pipe processing.
Pipe "Ultra Small Radius Bend Pipe" product image
Pipe "Ultra Small Radius Bend Pipe"
Seien Co., Ltd. Business Overview product image
Seien Co., Ltd. Business Overview

Go to product/service list

catalog(4)

Survey responses are required to view e-book details. Click to view the e-book.

Sealed Projection Welding Technology

Sealed Projection Welding Technology

TECHNICAL
  • E-book viewing
  • Catalog download

Contact this catalog

Seien Co., Ltd. Ultra-small R-bend Pipe

Seien Co., Ltd. Ultra-small R-bend Pipe

DOCUMENT
  • E-book viewing
  • Catalog download

Contact this catalog

Pipe "Ultra Small Radius Bend Pipe"

Pipe "Ultra Small Radius Bend Pipe"

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

Seien Co., Ltd. Company Profile

Seien Co., Ltd. Company Profile

COMPANY
  • E-book viewing
  • Catalog download

Contact this catalog

Go to catalog list

news(4)

ロゴとコピー_ポジ.png

[Application Information] Patent on projection welding technology for airtight piping.

  • PRODUCT

We have filed a patent for a pipe joining method and pipe joint that allows for a high strength of the joint and ensures airtightness by directly joining the base materials without using a filler material.

Jul 29, 2025

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
ロゴとコピー_ポジ.png

[Application Information] Patent on Projection Welding of Thin-Walled Pipe Curves

  • PRODUCT

We have filed a patent for a pipe joining method and pipe joint that allows for a high strength at the joint between pipes and ensures airtightness in the joining of thin-walled pipe curved surfaces.

Jul 29, 2025

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
【出願情報】気密プロジェクションの商標.jpg

[Application Information] Trademark for Airtight Projection

  • OTHER

We have named our unique technology, which ensures high joint strength and high airtightness through projection welding, "Airtight Projection" and have applied for a trademark.

Jul 29, 2025

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Go to news list

Detailed information

Company name セイエン
number of employees40
Contact addresspostalcode 737-1217 Hiroshima/ Kure-shi/ 1-5-5 Watocho, Onomichi CityView on map TEL:0823-51-2644 FAX:0823-51-2671
Key PartnersSamsung Manufacturing, Tokyo Radiator Manufacturing, Asahi Trading, Micro Techno, Boltz, Funakoshi Iron Works, Matsumoto Heavy Industries, Hiroshima Aluminum Industry, Yamazaki Metal Industry, Kodera Manufacturing, Olipp, Sankin, etc.
Industry Automobiles and Transportation Equipment
セイエン Building Image

Other Companies in Automobiles and Transportation Equipment

モービルジャパン
Miyagi//Automobiles and Transportation Equipment
モービルジャパン
京栄ニチユ
Kyoto//Automobiles and Transportation Equipment
京栄ニチユ
カスケード(ジャパン)リミテッド
Hyogo//Automobiles and Transportation Equipment
カスケード(ジャパン)リミテッド
SANO SHARYO SEISAKUSHO CO.,LTD.
Osaka//Automobiles and Transportation Equipment
SANO SHARYO SEISAKUSHO CO.,LTD.
エスティック
Osaka//Automobiles and Transportation Equipment
エスティック
  • Contact this company

    Inquiry Form
  • Before making an inquiry

    Download Profile

Products

  • Search for Products

Company

  • Search for Companies

Special Features

  • Special Features

Ranking

  • Overall Products Ranking
  • Overall Company Ranking

support

  • site map
IPROS
  • privacy policy Regarding external transmission of information
  • terms of service
  • About Us
  • Careers
  • Advertising
IPROS Services
  • >IPROS GMS | Search site for the manufacturing industry
  • >IPROS | Search site for the B2B industry
COPYRIGHT © 2001-2026 IPROS CORPORATION ALL RIGHTS RESERVED.
Please note that the English text on this page is automatically translated and may contain inaccuracies.