A1031/A1031M
A1031/A1031M (Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Alloy, Drawing Steel and Structural Steel, Hot-Rolled)· ASTM (米国) · 71 材料
A1031/A1031M (Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Alloy, Drawing Steel and Structural Steel, Hot-Rolled)· ASTM (米国) · 71 材料