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How to produce stainless steel welded pipe?

Time: 2018-07-14
How to produce stainless steel welded pipe? Depending on the outer dimension, wall thickness and final application. There are different ways of manufacturing stainless steel welded pipes, and different manufacturing method.
Stainless steel welded pipes start from stainless steel strip and coil that is passed through grooved rollers till the shape is formed and the free edges are properly shaped for welding. Cold forming is performed step by step from flat strip into a round profile. The edges are welded together as they approach the welding rolls.
Typical welding method for stainless steel welded pipes is traditionally autogenous tungsten inert gas (TIG). TIG welding method have some advantages that can effectively protect weld seam.
After welding outside and inside grinding of the weld seam, solution annealing or stress relieving may be necessary by application requirements.
Today, most of the modern welding lines are equipped with inline induction annealing. Then straitening and calibration to control dimension of tube & pipe, cut to standard or special lengths, de-burred, NPD & DT testing and inspection should be carried out as standard or requirement.


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