JIS G3445 for mechanical structure

Implementation standards:

JIS G3445--Carbon steel tubes for mechanical structures

Purpose:

Suitable for carbon steel pipes for machinery, automobiles, bicycles, furniture, appliances and other mechanical parts

The main production grades of steel pipes are as follows:

STKM11A、STKM12(A,B,C)、STKM12(A,B,C)、STKM(A,B,C)

Chemical composition:

Mechanical properties: