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  1. Home
  2. Manufacturing and processing contract
  3. 八千代工機
Manufacturing and processing contract
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八千代工機

EstablishmentFounded in March 1946 / Established in June 1976
capital5000Ten thousand
number of employees70
addressOsaka/Yao-shi/3-5-5 Fukuei-cho
phone072-990-3181
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last updated:Aug 07, 2026
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  • Products/Services(29)
  • catalog(7)
  • news(4)

八千代工機 Company Overview

Supporting Japan's infrastructure with cultivated product technology.

Our company designs and manufactures a variety of steel structure products, including steel towers, steel columns, and beams, in various shapes and sizes to meet customer requests. Additionally, leveraging our long-standing railway technology experience, we are engaged in product development across various fields such as "roads, communications, and power." We can accommodate production quantities from a single unit to mass production. Please feel free to contact us with your inquiries. 【Products Offered】 ■ Steel pipe columns and steel pipe beams ■ Angle beams and steel columns ■ Various types of frames ■ Ducts and pull boxes, etc. *For more details, please download the PDF or feel free to contact us.

Business Activities

We design and manufacture in-house. Please refer to the list below for our machinery and equipment. If you have any questions, feel free to contact us. 【Main Equipment】 Brake Press 50t - 1 unit Brake Press 100t - 1 unit Hydraulic Press 35t, 40t, 45t, 80t, 100t, 110t, 200t - total of 8 units Horizontal Press - 1 unit Electric Furnace W1100×L3450×H180 - 1 unit Gas Furnace W650×D1100×H300 - 1 unit Induction High-Frequency Heating Furnace - 1 unit Beam Worker (made by Amada) - 1 unit Iron Worker (made by Amada) - 1 unit Plasma Cutting Machine (made by Komatsu) - 1 unit Semi-Automatic Arc Welding Machine - 18 units Welding Robot (made by Daihen) - 4 units Welding Robot (self-propelled, made by Shinko) - 1 unit Machining Center - 1 unit Saw Cutting Machine - 1 unit Pipe Coaster 600MT - 1 unit Table Cutting Machine - 1 unit Radial Drill - 1 unit

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Large-scale press processing and can manufacturing contract services for metal products.

Large-scale press processing and can manufacturing contract services for metal products.

We accommodate custom orders starting from one piece. With our in-house integrated system from design to pressing, welding, and strength testing, we deliver products tailored to individual needs.

At Yachiyo Koki, we accept large-scale press processing of iron products and can manufacturing through manual processing. Based on the drawings provided by our customers, we can produce custom steel structures and primary processing components starting from just one piece. Please feel free to contact us regarding specifications and prototypes. 【Features】 ■ Extensive track record in railways and power infrastructure, which require strict safety standards ■ Support from 3D strength analysis during design to in-house proof load testing ■ A diverse range of production equipment, including large presses, heating furnaces, and welding robots *For more details, please download the PDF or feel free to contact us.

Products/Services (29)

Large-scale press processing and can manufacturing contract services for metal products. product image
Large-scale press processing and can manufacturing contract services for metal products.
Support for strength calculations and seismic design of cubicle (substation equipment) frames and others. product image
Support for strength calculations and seismic design of cubicle (substation equipment) frames and others.
Mobile welding robot product image
Mobile welding robot
Welding robot product image
Welding robot

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catalog(7)

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Seismic design and strength calculation support

Seismic design and strength calculation support

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Hot forming and pressing process

Hot forming and pressing process

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List of Production Equipment and Machinery

List of Production Equipment and Machinery

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Lightning suppression type lightning rod "PDCE"

Lightning suppression type lightning rod "PDCE"

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news(4)

Introduction to "Original Emergency Food!!" Utilizing Freeze-Drying Technology

  • PRODUCT

This is an introduction to our "Original Emergency Food" utilizing the "Two-Layer Stainless Steel Tray" produced by our company! We can produce freeze-dried food in small batches! It is possible to manufacture "Original Emergency Food" that reflects the characteristics of various regions across Japan. Not only suitable for emergency stockpiling, but also great as gifts for events! Please take a look at our brochure.

Mar 07, 2026

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About the manufacturing cooperation system with a specialized aluminum welding processing factory.

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The demand for aluminum products that are durable and lightweight is increasing. At our company, we have established a system that can handle everything from one-off items to mass production in collaboration with a specialized aluminum welding processing factory after material processing.

Feb 12, 2026

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Start of sales for "aerogel material" with excellent heat resistance, insulation, and soundproofing properties.

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Starting from January 26, we began selling products made with "aerogel material," which excels in heat resistance, insulation, and soundproofing. The "aerogel material" is in a mat form, easily cut, and can be installed in various locations. It is currently used in vehicle interiors and substations. There are various installation methods available, and we can provide proposals from our company.

Jan 25, 2026

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Detailed information

Company name 八千代工機
number of employees70
Contact addresspostalcode 581-0844 Osaka/ Yao-shi/ 3-5-5 Fukuei-choView on map TEL:072-990-3181 FAX:072-990-2781
Key PartnersShinsei Technos Corporation, JR West Japan Electric Systems Corporation, Nippon Densetsu Kogyo Corporation, Yachiyo Electric Construction Industry Corporation, JR Kyushu Electric Systems Corporation, Chuo Densetsu Corporation, Mitsubishi Heavy Industries Corporation, Niigata Transys Corporation, Kansai Electric Engineering Co., Ltd., West Japan Railway Company, Central Japan Railway Company, Tokyo Metro Co., Ltd., and others.
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