Partner Sales
We provide diverse products and services in collaboration with Matsui Group companies and external processing/distribution partners. Utilizing our reliable network, we can flexibly respond to processing that cannot be handled in-house and special needs.
Distribution Section
We have accumulated a track record of business with trading companies, wholesalers, and processors across Japan. We strive daily with the hope of contributing, even in a small way, to the further prosperity of the steel industry by vitalizing (i.e., distributing) each other's businesses. We gladly welcome sales activities toward our company not only from customers but also from outsourcing partners.

Do you have any of these concerns?
Concern 1 Managing delivery times and quality is difficult when requesting multiple suppliers.
Requesting different suppliers for each processing type makes it prone to errors between processes and troubles due to lack of coordination.
Matsui Kozai consolidates the contact window!
Total management of the entire process!Matsui Kozai consolidates the contact window, handling total coordination, schedule adjustment, and quality control with each partner company. With a single request, you can order and receive products requiring multiple processes all at once.
Concern 2 I want a partner who can handle special materials and large products.
Depending on the material, such as special stainless steel, aluminum, or iron, and size thereof, the processors who can handle it are limited.
Collaborating with cooperating companies that possess diverse equipment and systems!
Matsui Kozai has built a network with cooperating companies capable of handling diverse materials and sizes. We consistently support everything from design to manufacturing to delivery, even for processing large structures and special materials. We have established a system where you can safely entrust “difficult projects” to us.
Concern 3 I want to purchase steel materials in exactly the required quantity, and urgently.
Processing deadlines are approaching, materials are needed urgently, and I want to obtain exactly the required length.
Realizing short delivery times by coordinating with our own cutting factories in Osaka, Shiga, Mie, and Chiba!
Using carbide metal saws and band saws, we cut to your desired length! We also respond to delivery times for materials other than SUS bar steel together with cooperating companies!
We widely stock SUS round bars and hexagonal bars at our own factories in Osaka, Shiga, Mie, and Chiba. Numerous cutting machines are deployed at each factory, and trucks for internal circulation connect each base daily. We handle shapes and steel grades other than SUS bar steel by utilizing our network of numerous cooperating companies.
Leave urgent arrangements to us! First,
please feel free to contact us.

Strengths of Partner Sales
Breadth of Response Capability Utilizing
Group Strength and Network
We collaborate with reliable partner companies in each field, centered around the Matsui Group.
Even for processes and special machining that we cannot fully handle in-house, we provide one-stop responses under consistent quality control.
Starting from a single drawing, we select the optimal processing destination and responsibly manage delivery times and quality.

Transaction Flow (Example)
- STEP1
Inquiry from Customer
- Material procurement
- Processing request
- STEP2
Proposal from Sales Rep
- Unit price for materials and processing
- Delivery time for materials and processing
- Confirmation of quality, tolerances, etc.
- STEP3
Contract Conclusion
- Work instructions to internal factories
- Ordering to external cooperating companies
- STEP4
Delivery to Destination
- Delivery via own fleet
- External route delivery
- STEP5
Submission of Necessary Documents
- Invoice
- Material Mill Test Certificate (Mill Sheet)
- Dimensional Inspection Report
Optimal Matching Proposals
by Sales Representatives
Sales representatives carefully interview you about product details and issues, selecting the optimal partners, processes, and materials.
Even for projects where you “don’t know who to ask,” we construct reliable routes and alleviate the burden on the customer.

Compatible Processing and Product Areas
Material Sales
SUS / SS / SC / SK / SCM / SNCM / Brass / Copper Alloys / Aluminum / Titanium / Nickel Alloys, etc.
Processing Examples
- Lathe Machining
- Milling
- Machining Center Cutting
- BTA (Boring and Trepanning Association) Deep Hole Drilling
- Gun Drilling
- Outer Diameter Centerless Grinding
- Friction Welding
- Rolled Threading
- Free Forging
- Die Forging
- Roll Forging
- Upset Forging
Leave urgent arrangements to us! First,
please feel free to contact us.
FAQ
- Do you have a company brochure?Yes, we do.
Please download it from Document Downloads.
- What kind of steel materials do you handle?We can widely handle everything from general steel materials to special steel.
Our main strength is stainless steel round bars, but we also handle the following:
- Steel Plates (SS materials, SM materials, etc.)
- Shape Steel (H-beams, angles, channels)
- Steel Tubes (Round pipes, square pipes)
- Stainless Steel Materials
- Special Steel / Processed Materials
We would appreciate it if you consulted with us first.
Leave urgent arrangements to us! First,
please feel free to contact us.
Services
Services Top-
Stainless Steel Sales
We procure and sell specialty steels including stainless steel. We propose the optimal material, shape, and quantity based on customer applications and blueprints, delivering exactly what you need when you need it.
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Stainless Steel Processing
We perform various processing including cutting, drilling, bending, and machining at our own factory. By integrating sales and processing, we provide high value-added services.
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Exterior Products
We quickly understand customer needs and select optimal steel materials.
We coordinate from processing to delivery as needed, providing solution-based sales.Learn More
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Quality Control
We conduct thorough quality control from material selection to processing, inspection, and shipping.
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Transaction Flow
We introduce the flow from inquiry to delivery.
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FAQ
We have compiled a list of frequently asked questions. Please find them useful when making your considerations.
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Document Request
We have prepared company profile documents summarizing our products and services.
Please feel free to contact us for consultations.
Please contact us here for new consultations regarding manufacturing and work, or inquiries about purchased products.