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erw q345 q235b erw black round steel welded pipe dn200 Product Details

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Q235B 12 inch diameter ERW tube ZS Steel Pipe

Q235B 12 inch diameter ERW tube. Electric resistance welding (ERW[1]) refers to a group of welding processes such as spot and seam welding that produce coalescence of faying surfaces where heat to form the weld is generated by the electrical resistance of material combined with the time and the force used to hold the materials together during ...

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