We handle a wide variety of steel materials and processed products, including polished steel bars other than centerless polished products.

Possible processing sizes
Seiken Kogyo's polished round bars are available in a wide range of sizes, from 5 mm to 70 mm in outer diameter and 200 mm to 6,000 mm in length. In addition to the usual accuracy of 3/100mm to 4/100mm, we can achieve a high accuracy of 5/1,000mm, which is much higher than that.
A wide range of materials are available, including iron, SUS, aluminum, and brass.

Possible processing materials
We can perform centerless grinding for a wide range of steel types.
Please feel free to contact us for steel types other than those listed below.
Stainless steel
・Austenite type (SUS304, etc.)
・Ferrite type (SUS403, 430, etc.)
・Martens (SUS410, etc.)
・High strength stainless steel (SUS630, etc.)

Other
General special steel (SS material, S-C material, etc.)
Pure titanium (JIS Class 1, Class 2, etc.)
Martens (SUS410, etc.)
Copper elongation
Aluminum (AL6000 series, 7000 series), etc.