ورق فولادی سازه ای ASTM A573 / A573M درجه 70 4 میلی متر
ورق فولادی سازه ای ASTM A573 / A573M درجه 70 4 میلی متر. ASTM A573 is a specification for structural quality carbon-manganese-silicon steel plates in three tensile strength ranges intended primarily for structural applications at atmospheric temperatures for which improved toughness is required.A573 درجه 70/ A573 ...