Having been practiced for several years, a new butt method for spiral weldedpipe, the two spots tack-weld butt was made out.
通过几年来的实践，摸索总结出了一种螺旋焊管对接新方法——两点点固对接法。
2
In this paper, the residual welding stresses in a low carbon steel girth buttweldedpipe are calculated with a nonlinear finite element code ADINA.
本文利用ADINA非线性分析有限元程序，对低碳钢管道环焊缝接头焊接残余应力进行计算。
3
Germany RBT import external thread needle valve can be equipped with stainless steel weldedpipe, and pipeline butt welding connection, but also through the outer nut removing the valve.