... (10~90mm)*(60~610mm) 5, ISO9001 2000 Sichuan Liaofu Special Steel Trading Co., Ltd.Alloy Structural SteelAISI 1018/GB 20MnDimension:Flat ... , or at the customers' requirementsSichuan Liaofu Special Steel Trading Co., Ltd.Alloy Stuctural Steel 1, Grade: AISI 1018/GB 20Mn2, Chemical ... Low Carbon Hardened SteelApplication: used in making gear, crankshaft, trestle, hinge, oil tank, and cream pitcher etc.