Naigai Steel Corporation

JFE Shoji Corporation Group's steel processing and sales company

We provide high-quality steel processing services, with three thin sheet products as our core products. Our Head Officeplant in Mizushima, Okayama Prefecture, is adjacent to the JFE Steel West Japan Works/Kurashiki district, providing a quick and stable processing system. We also utilize our transportation base in Osaka to flexibly respond to customer requests for short delivery times and small lots in the Kansai, Chugoku, and Shikoku areas. We strongly support our customers' manufacturing activities with our meticulous services.

About Us

Company name
Naigai Steel Corporation
Location
1-1950, Mizushima Nishidori, Kurashiki, Okayama 712-8073, Japan
TEL: +81-6-448-3688 FAX: +81-6-446-7476
Representative
Shinichi Yamamoto
Establishment
February 1963
Capital
60 million yen
Shareholder
JFE Shoji Corporation Ltd.
JFE Shoji CorporationMachinery & MaterialsSales Co.
Number of Employees
Employees 32 (as of April 1, 2026)
History of JFE Shoji Trade Corporation
  • February 1963 Naigai Steel Corporation established with capital of 10 million yen.
    Began operations as a manufacturer of Shinto steel round bars for Kawasaki Steel (now JFE Steel).
  • August 1999 Withdrew from the business as a steel round bar manufacturer and specialized in sales of steel sheets.
  • Feb. 2005 Merged with K.M. Steel, a sheet steel processing and sales company.
    Company name changed to Naigai Steel Co. Capital increased to 60 million yen.
  • Oct. 2019 New thin plate plant is established and a "new thin plate leveler line" is installed.
  • July 2020 New thick leveler line is installed.
Steel types handled
Hot-dip galvanized steel sheet (galvanized steel sheet), electrogalvanized steel sheet, cold-rolled steel sheet,
hot-rolled steel sheet, pickled steel sheet, colored steel sheet, galvalume steel sheet, other steel sheet

Locations

Head Office Factory
1-1950, Mizushima Nishidori, Kurashiki, Okayama 712-8073, Japan TEL: 086-448-3688 FAX: 086-446-7476
Transportation information from the nearest station

15 minutes by cab from JR Shin-Kurashiki Station

Outline of Facilities

Thin Plate Plant

Number of units】
One thin leveling machine
[Processing specification】
Thickness :0.4~2.3㎜
Width :500~1650㎜
Cutting length:400~3500㎜
[Equipment feature】
Fine drum shear system
・Straightness of cutting surface is ensured
・Cutting surface shape is extremely small
Electromagnetic piler system adopted
・Vertical dropping of products minimizes defects during accumulation Minimize defects at the time of accumulation by dropping products vertically

Thick fabrics factory

Number of units】
One thick leveler
[Processing specification】
Thickness : 1.6 to 6.0 mm
Width : 700 to 1600 mm
Cutting length : 500 to 3500 mm
[Equipment feature】
Six high leveler
- Higher level of flatness
- Prevents transfer of backup roll marks
Cassette type roll changing system
- Thick material 3.2 mm or more Φ100
Thin material 3.2 mm or less Φ70
(Used separately for thick and thin materials)

Shearing factory

Number of units】
2 units of 2M semi-auto / 1 unit of 2M full-auto
1 unit of 4" semi-auto / 1 unit of 8" semi-auto
[Processing specifications】
Sheet thickness : 0.4 to 3.2 mm
Sheet width : 300 to 2500 mm
Cutting length : 40 to 1250 mm
[Equipment features】
Sheet transfer cart installed
- Line with enhanced productivity and safety

Initiatives

CSR Initiatives

We value the idea that "safety takes precedence over everything else," and we are committed to creating a workplace where each and every employee can work with peace of mind, "like a family. We are committed to a culture of caring for and helping each other, and we are sincere in our daily work.

Safety initiatives

The most important foundation of our company is to ensure that our employees can work with peace of mind. For this reason, we value the balance between people and the work environment to create a warm and welcoming workplace.

Safety training for employees to learn from each other
Holding regular safety training sessions
While talking to each other, fellow employees deepen their knowledge and awareness of the importance of safety in their daily work.
Creating a warm workplace that protects mental health
Holding employee get-togethers
We create a place where employees can talk easily and naturally foster a relationship of mutual support.

Environmental Initiatives

As a company that walks hand in hand with the people of the local community, we are committed to doing what we can do every day with sincerity.

1. cleaning activities to improve the working environment
Head Office Cleaning up the surrounding area
We keep the place where we work clean, leading to a pleasant and comfortable workplace.

To continue to be a company that values its associates

We will continue to value each and every one of our employees, and will continue our daily efforts as
"a company that supports each other like a family".

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