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Latest update: 28/11/2022 14:16:52


Making use of our experience on manhole lids to enter the markets of construction machines and components for railway cars

We moved from Kawaguchi City, Saitama Prefecture to Otaru City, Hokkaido in 1952 to manufacture and sell cast products and metal net products. Our main business is related to manhole lids made with nodular graphite cast-iron (ferrous cast ductile, FCD); we have distributed them to 60 percent of the cities and towns in Hokkaido. Our market share for manhole lids with locks for use in optical high-speed telecommunication in Hokkaido is 90 percent. We can take comprehensive orders covering mold designing by using 3D CAD to the finished products; we handle a wide range of products from one-off products to mass-production and from the 1kg level to the 1t level with a short lead time. Making use of our technology accumulated in the manufacturing of manholes, we entered the field of non-public businesses such as construction machines, parts for railway cars, and automotive products.


This company is recommended by the following support organizations.

Hokkaido Head Office, SMRJ