piping steel

• 镇静钢

piping steel的用法和样例：

例句

1. The macroexamination and micro-examination of the characteristics of the common cavity defect in cold rolled sheet of low carbon Al-killed steel were carried out.
   对生产中常见的低碳铝镇静钢冷轧板孔洞缺陷特征进行了宏观和微观分析。