Submerged arc welded steel pipe and its standard classification

A pressurized fluid conveying spiral submerged arc welded steel pipe (SY5036-83) is mainly used to transport oil and gas pipeline; pressure fluid conveying spiral seam high frequency welding steel tube (SY5038-83), high frequency welding method for welding, pressure liquid transportation spiral seam high frequency welded pipe. Steel strong bearing capacity, good plasticity, easy processing and welding molding; general low-pressure fluid transport with spiral submerged arc welded steel pipe (SY5037-83), using double-sided automatic submerged arc welding or welding method made for SSAW pipe water, gas, air and steam conveying low pressure fluid

As of 2009, the common standard submerged arc welded steel pipe is generally divided into: SY/T5037-2000 (standard, also known as the common fluid pipeline with spiral submerged arc welded steel pipe (GB/T9711.1-1997), GB, also called industrial oil gas transportation pipe technical delivery conditions - Part 1: a steel tube (as of 2009 there are strict requirements of GB/T9711.2 B grade steel.)), API-5L (American Petroleum Institute, also called line pipe; which is divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral submerged arc welded steel pipe)