Group Companies

The Comprehensive Strength of the Matsui Group

Centered around the three specialized areas of “Materials,” “Processing,” and “Engineering,” the Matsui Group continues to provide a wide range of services including manufacturing, logistics, and equipment maintenance. As a member of the Matsui Group, Matsui Kozai develops its business centering on the processing and sale of steel materials.
Matsui Kozai’s strengths are our stable foundation leveraging the network of the entire group, and our flexible proposals and responsiveness rooted in the field as “steel professionals.”

Stainless-Product Inc

Processing of stainless
steel/
special steel
Joining processing of
similar/
dissimilar
diameter materials

Matsui Machine Ltd.

Petroleum refining plant design
Chemical product plant design
Engineering services

Matsui Kozai Inc.

Sales of stainless steel /
special steel / high alloys
Various types of precision machining

Stainless
Steel Sales
Stainless
Steel Processing
Partner Sales
Exterior Products

Engineering Matsui Machine Ltd.

An engineering company responsible for designing petroleum refining plants and chemical product plants. Plant construction is “manufacturing for the sake of manufacturing,” and its design is an extremely important starting point. Matsui Machine Ltd. is a group of professionals who bear that critical role.

4-10-11 Kawaguchi, Nishi-ku, Osaka-shi, Osaka 550-0021, Japan

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TEL: 06-6581-2571 (Main)

FAX: 06-6581-1329

Main Operations

Sales of machinery, tools, machine tools, and peripheral equipment
Equipment proposals and implementation support at manufacturing sites
Maintenance and servicing for processing machinery and jigs/tools
Technical proposals and consulting aimed at improving production efficiency
Support for supplying machinery and equipment to group companies and business partners

Precision Machining / Dissimilar Material Joining Stainless-Product Inc

A group company specializing in the processing division for stainless steel and special steel materials. In addition to Osaka where the head office is located, it has bases in Shodoshima, Hiroshima, Shiga, etc., and supports the Matsui Group’s product supply capability and solution power by making full use of extensive equipment and technology.

4-10-11 Kawaguchi, Nishi-ku, Osaka-shi, Osaka 550-0021, Japan

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TEL: 06-6581-2571 (Main)

FAX: 06-6581-1329

Main Operations

Manufacturing of metal processed products, including steel materials like stainless steel
Various processing tasks such as machining / drilling
Custom-made product manufacturing based on drawings
Promoting efficiency and quality improvement in the processing process
Integrated production system through collaboration with Matsui Kozai and Matsui Group companies

Partner Companies

Through collaboration with Matsui Group companies and cooperating partner companies nationwide, Matsui Kozai has established a system capable of consistently handling diverse processes such as machining, welding, surface treatment, and assembly.