This article describes the whole process of JCOE longitudinal submerged arc welding pipe made from rolling plate.

简述了采用热轧卷板制造直缝埋弧焊接钢管的全过程。

youdao

This article describes the whole process of JCOE longitudinal submerged arc welding pipe made from rolling plate.

简述了采用热轧卷板制造直缝埋弧焊接钢管的全过程。

youdao