Seamless steel pipe is stronger than welded steel pipe.

无缝钢管比焊接钢管更坚固。

Welded steel pipe for liquid service

矿用流体输送焊接管

The welded pipe includes: Hot volume welded steel pipe, cold volume welded steel pipe, spiral steel pipe, single slit steel pipe, many seam weld steel pipes.

焊管包括：热卷焊接钢管，冷卷焊接钢管，螺旋钢管，单缝钢管，多条缝焊接钢管。

Give qualitative two means to take account of standard for steel strip and welded steel pipe.

在全面考虑钢带和焊管标准的基础上,提出解决钢带判定的两种方法.

This article discussed the residual stress of the HU-METAL method formed large diameter longitudinal seam welded steel pipe.

对HU-METAL法卷制成型大直径直缝焊钢管残余应力进行了分析讨论。