since 1985
PROFESSIONAL OF ROLLED STEEL

World-class precision rolling technology

Kawaguchi Metal Material Co., Ltd.

We are a leading manufacturer specializing in the hot rolling of shaped steel, which dimension is the most accurate not only in Japan but in the world. Many of our high-quality parts and products produced using precision rolling technologies and our advanced skills and know-how in the precision finishing of complex cross-sectional shapes have received high commendation and trust from the market.

POINT!

1 point
We provide even small quantities of various shaped steels at your request

2 point
We provide complex shaped steels, even when any other manufacturers could not provide them

3 point
We have integrated and advanced technical capabilities from roll design to rolling based on strict quality control

products

Scope of Manufacturing

Steel type

Click to Enlarge

Image of Shaped Steel

Shaped steel (Door-hinge etc.)

Click to Enlarge

Flat, square bars

Click to Enlarge

Guide to applications

Our products are used in linearly-driven bearing units that form the key parts of robots, conveyance equipments and semi-conductor manufacturing equipments, including machine tools.

They are also used as rotating pedestal rings of construction machineries.

Finger bars in cargo handling equipment like forklifts.

Drum-rotating rear rings in concrete mixer trucks.

process

Service Flow

Upon receiving an inquiry, the procedure until the products are delivered is as follows.

① Receipt of inquiry, request for quotation

Please feel free to submit your inquiries to us. We will respond carefully to your needs.
If drawings are available, please send them to us as well.
If not, sketches on the rough shape can also be used for our manufacturing consideration.
We look forward to receiving your inquiries then.

Contact Desk）Sales Department
TEL：06-6374-2821／FAX：06-6375-2985
② Submission of quotation

Based on your inquiry, we will consider whether the product can be manufactured and then calculate the cost and delivery lead-time from procurement of the raw materials until completion before sending you our quotation or via email, fax, or company visit.
③ Order

We request that you issue a purchase order if you are satisfied with the quotation.
You can send in your purchase order in any format via fax or email.
④ Design, and fabrication of manufacturing equipments

*Manufacturing equipments－Ground rolls and glide boxes for rolling.
The above shall be designed and fabricated to make the products, which meet your request.
⑤ Manufacturing of products

After procuring the raw materials (steel billets), a trial product will be made and after verification of it,
mass production will start smoothly. During mass production, problem-solving and improvement of the products wil also be available.
⑥ Quality inspection

A variety of tests and pre-shipment inspections will be conducted along our severe inspection standards.
Inspection reports and material certificates may also be issued upon request.
⑦ Shipping, delivery

Products will be delivered quickly to fit your preferred delivery schedule.
If necessary, we can also deliver the products directly to a delivery location designated by you.
⑧ After-market services

Please ask us if you wish to change the specifications after delivery.
We will respond promptly in case of any defects found in our products.

Manufacturing process of hot-rolled steel

1. Roll grinding

The rolls are prepared to match the shapes required by the customer.
For new products, the design is done using CAD and then grinding is carried out first.

2. Material heating

The material billets are heated to a temperature of 1200-1250℃ in a reheating furnace.

[MOVIE] Material heating

3. Rough rolling

Rolling is carried out using a triple-layer roll stand.
The billets are rolled repeatedly while moving up and down.

[MOVIE] Rough rolling

4. Intermediate, final rolling

A high precision cross-sectional shape is finished using a pass schedule design involving rough rolling, intermediate rolling and final rolling.
After those rollings, the product is transferred to the steel conditioning process via a cooling table.

[MOVIE] Intermediate rolling
[MOVIE] Final rolling

5. Steel conditioning and finishing

Shot-blasting is carried out to remove surface scales, including minute surface scratches.
The products are passed through a horizontal press to correct warps and bends and then they undergo automatic surface polishing, external inspection and grinding before shipment.

6. Quality control

Samples are examined in the test lab for verifying material properties linked directly to product performance.
De-carbonization control is also possible.

profile

Greeting

Chairman and Executive Director
Shinkichi Suzuki

Tomorrow's Technology, Today.

With the experience and technical skills as a shaped steel pionner, we will continue to contribute to the further growth of the industry.

Making use of our know-how that has been cultivated through the manufacture of cast iron and steel casting, we first started manufacturing shaped steel using hot rolling process in 1985.
Since then, we have focused our efforts on manufacturing shaped steel with precise, complex shapes under strict quality control in order to constantly satisfy the needs of our customers. We are going to keep contributing to the development of the industry not only in Japan but globally as well with our superior rolling technology.

Staff Working Staff

Plant aerial photograph

Outline Company Profile

Company Name: Kawaguchi Metal Material Co., Ltd.

Capital: 62 million yen

Address: Head Office　#1103 TokyoKotsuKaikan Building 11F, 2-10-1 Yurakucho, Chiyoda-ku, TOKYO Prefecture
Sales Office　Umeda Kita Place 7F,1-14-8, Shibata, Kita-ku, Osaka-shi, Osaka Prefecture
Hyogo Plant　278-3, Hanjo-cho, Kasai-shi, Hyogo Prefecture

Item of Sales: Hot rolled products: Shaped steel, flat bar, square bar

Rep.: Chairman and Executive Director - Shinkichi Suzuki
Representative Director & President - Masahide Hirono

History

Jul 1985: Kawaguchi Metal Industries Co., Ltd.　
Hyogo Plant established (started hot rolling of shaped steel)

Jun 1988: No. 1 storage built

Oct 1988: Separated from Kawaguchi Metal Industries Co., Ltd.
as Kawaguchi Metal Material Co., Ltd. (Hyogo Plant)

Nov 1989: No. 2 storage built

Jan 2006: Certified as ISO9001 company

May 2006: New cutting machine installed and finishing equipments' layout rearranged

Apr 2009: Joined the company group of newly established "Kawakin Holdings Co.,Ltd."

Apr 2017: High-precision cutting machine installed

May 2017: New Office built

May 2017: Billet-yard extended

Jan 2019: Seismic strengthening of Hyogo plant

Oct 2019: Billet Cutting Robot installed

products

Scope of Manufacturing

Steel type

Click to Enlarge

Image of Shaped Steel

Shaped steel (Door-hinge etc.)

Click to Enlarge

Flat, square bars

Click to Enlarge

Guide to applications

Our products are used in linearly-driven bearing units that form the key parts of robots, conveyance equipments and semi-conductor manufacturing equipments, including machine tools.

They are also used as rotating pedestal rings of construction machineries.

Finger bars in cargo handling equipment like forklifts.

Drum-rotating rear rings in concrete mixer trucks.

process

Service Flow

Manufacturing process of hot-rolled steel

1. Roll grinding

The rolls are prepared to match the shapes required by the customer. For new products, the design is done using CAD and then grinding is carried out first.

2. Material heating

The material billets are heated to a temperature of 1200-1250℃ in a reheating furnace.

[MOVIE] Material heating

3. Rough rolling

Rolling is carried out using a triple-layer roll stand. The billets are rolled repeatedly while moving up and down.

[MOVIE] Rough rolling

4. Intermediate, final rolling

A high precision cross-sectional shape is finished using a pass schedule design involving rough rolling, intermediate rolling and final rolling. After those rollings, the product is transferred to the steel conditioning process via a cooling table.

[MOVIE] Intermediate rolling [MOVIE] Final rolling

5. Steel conditioning and finishing

Shot-blasting is carried out to remove surface scales, including minute surface scratches. The products are passed through a horizontal press to correct warps and bends and then they undergo automatic surface polishing, external inspection and grinding before shipment.

6. Quality control

Samples are examined in the test lab for verifying material properties linked directly to product performance. De-carbonization control is also possible.

profile

Greeting

Tomorrow's Technology, Today.

With the experience and technical skills as a shaped steel pionner, we will continue to contribute to the further growth of the industry.

Staff Working Staff

Plant aerial photograph

Outline Company Profile

History

contact

The rolls are prepared to match the shapes required by the customer.
For new products, the design is done using CAD and then grinding is carried out first.

Rolling is carried out using a triple-layer roll stand.
The billets are rolled repeatedly while moving up and down.

A high precision cross-sectional shape is finished using a pass schedule design involving rough rolling, intermediate rolling and final rolling.
After those rollings, the product is transferred to the steel conditioning process via a cooling table.

[MOVIE] Intermediate rolling
[MOVIE] Final rolling

Shot-blasting is carried out to remove surface scales, including minute surface scratches.
The products are passed through a horizontal press to correct warps and bends and then they undergo automatic surface polishing, external inspection and grinding before shipment.

Samples are examined in the test lab for verifying material properties linked directly to product performance.
De-carbonization control is also possible.