Longitudinal welded pipe is one of the welded tubes. Due to different production processes, longitudinal welded pipes can be divided into high-frequency longitudinal welded pipes(ERW pipe) and submerged arc welded longitudinal welded pipes(LSAW steel pipes). Submerged arc welded longitudinal welded pipes are divided into UOE, RBE, and JCOE steel pipes according to their different forming methods.
Longitudinal welded pipes can be divided into high-frequency longitudinal welded pipes and submerged arc welded longitudinal welded pipes according to the production process. Submerged arc welded longitudinal welded pipes are divided into UOE, RBE, JCOE steel pipes, etc. according to their different forming methods.
This kind of steel pipe is welded by a welding method parallel to the longitudinal direction of the steel pipe. With the same diameter and length, the welded length of longitudinal welded pipes is much less, while the welded length of spiral steel pipes may increase by more than 30 percent .
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