The demand to welding process of high-frequency welding pipe is introduced, some related parameters proposed.

介绍了高频焊管对焊接工艺的要求，提出了有关工艺及技术参数。

youdao

The demand to welding process of high-frequency welding pipe is introduced, some related parameters proposed.

介绍了高频焊管对焊接工艺的要求，提出了有关工艺及技术参数。

youdao