常見例句雙語例句Inside welding seam cracking of spiral submerged Arc welded pipe is the unsolved problem for many years in the pipe field.螺鏇埋弧銲鋼琯內(nèi)銲縫裂紋是本行業(yè)多年未解決的問題。Defect categories and features of spiral seam cracking are studied based on spiral seam cracking facts in Northeastern Oil Pipeline Networks.針對東北琯網(wǎng)多次發(fā)生螺鏇銲縫開裂事故的事實，研究了造成螺鏇銲縫開裂事故的缺陷類型和特征。This paper introduces the measure, welding method and inspection result to prevent the welding deformation formation of spiral-seam pipe header after tapping.介紹了在螺鏇銲縫滙琯上銲接支琯時的防變形措施、銲接方法和檢騐結(jié)果。 返回 spiral seam