This article discussed the residual stress of the HU-METAL method formed large diameter longitudinalseam 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。
2
Because of the much thick wall of large capacity boiler drum, the pressed and weld longitudinalseam is used to manufacture the drum shell ring.
由于大容量电站锅炉汽包的壁较厚，所以在汽包筒节制造时常采用压制成两个半圆瓦片再焊接而成的方法。
3
According to the domestic pipeline construction demand to the pipe, it is proposed to import a longitudinalseam SAW steel pipe mill as early as possible.