In this paper the HAZ weld thermal cycles of the welding by both sides submerged arc welded steel pipe were reproduced by the dislocation overlap weld method.
采用焊道错位叠加方法，再现了螺旋管双面埋弧焊制管过程中内、外焊焊接热影响区(HAZ)的焊接热循环。
The whole procedure includes preparing steel strip and butt welding, forming and fixed position welding, pipe output and cutting, and final submerged arc welding.
其整个工艺包括带钢准备和对接、成型及定位焊、管子输出和切割和埋弧终焊。
Inside welding seam cracking of spiral submerged Arc welded pipe is the unsolved problem for many years in the pipe field.
螺旋埋弧焊钢管内焊缝裂纹是本行业多年未解决的问题。
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