The whole procedure includes preparing steel strip and butt welding, forming and fixedpositionwelding, pipe output and cutting, and final submerged arc welding.
其整个工艺包括带钢准备和对接、成型及定位焊、管子输出和切割和埋弧终焊。
2
The project position of welder qualification test for long transporting pipe depends on vertical down welding basically, which is namely fixed pipe with axis horizontal welding (5gx).