SAKAI INDUSTRY INC.

About Us

Since our establishment in 1953, we have grown as a metalworking company based in Kiyama-cho, Saga Prefecture.
Currently, we are engaged in a wide range of businesses, including the manufacture and repair of products, machinery, and equipment for construction and suburban factories, with a focus on products in the bridge field.

We value “trust”.
We are committed to improving the quality of our products, responding flexibly to customer requests, and doing what is natural to us, which leads to the “trust” of our customers.
We would like to continue to make products that our customers can feel the trust of our customers through the products we make.

We will continue to strive to be a company that contributes to the local community by mobilizing the strengths of each and every one of our employees so that we can continue to be a company that is sought after by everyone.
We look forward to your continued support in the future.

Company Name	SAKAI INDUSTRY INC.
Address	967, Nagano, Kiyama-cho, Miyaki-gun, Saga 841-0202, Japan
Phone number	TEL +81-942-92-2753 FAX +81-942-92-3350
Representative	President and Representative Director Junichi Ichioka
Establishment	1953 April
Founded	1976 December
Paid-in Capital	10,000,000JPY
Business Description	Manufacture of various metal products
Certifications	20 persons
Main Bank	Bank of Fukuoka, Kiyama Branch Saga Bank, Kiyama Branch

Spiral Sheath

About “Spiral Sheath”

Since the first prestressed concrete construction method was adopted in Japan in 1952, there has been a remarkable development.
At the same time, “Spiral Sheath” has been widely used as PC steel sheathing material for bridges, buildings, roads, aircraft runways, swimming pools, tanks, and other PC structures, and is manufactured and used in large quantities.

“Spiral Sheath” are polymerized spiral wound tubes manufactured using a unique method.
The manufacturing method uses steel strips of 20 to 100 mm in diameter and 0.25 to 0.5 mm in thickness, and the ends of the steel strips are overlapped and secured together while spirally wound. The overlapping portion, which plays a particularly important role in maintaining strength, is made by overlapping four pieces of steel strip and then pressing them together in a jagged pattern.
Our “Spiral Sheath” are produced under integrated production control, from manufacturing to packing and transportation, based on the principle of quality first.

Other Products

In addition to spiral sheath, our main product line, we also manufacture bridge-related products, various metal products, and fabricated products.