It generally refers to the carbon structural steel and medium carbon alloysteel.
它一般是指中碳结构钢和中碳合金结构钢。
2
The intermedium temperature microstructure of medium carbon alloysteel is upper and lower bainite.
中碳合金钢的中温转变组织只有上、下贝氏体。
3
The cold heading steel coil generally is low and medium carbon quality steel and alloy structure steel to manufacture various standard mechanical element and fastener by cold heading forming.