grade of steel meaning in English
钢号
钢级
钢种
Examples
- Definition and classification of grades of steel
钢等级的定义和分类 - Definition and classification of grades of steel
钢的等级定义和划分 - Strength classes grades of steel barokok . org
普通钢筋强度等级30 - Definition and classification of grades of steel ; german version en 10020 : 2000
钢的等级定义和划分 - Strength classes grades of steel bar
普通钢筋强度等级