Special SteelChina 1.2311, 1.2312, 1.2738, P20, 1.2083, 1.2316, Nak80, P40, 1.2738hh Alloy Steel Plastic Mould Steel, Find details about China Hot Rolled Steel, Steel Sheet from 1.2311, 1.2312, 1.2738, P20, 1.2083, 1.2316, Nak80, P40, 1.2738hh Alloy Steel Plastic Mould Steel