Spiral seam submerged arc welded steel pipe SY5036-83 for pressurized fluid transportation is mainly used for oil and natural gas pipelines; spiral seam high frequency welded steel pipe SY5038-83 for pressurized fluid transportation is welded by high-frequency lap welding. Spiral seam high-frequency welded steel pipes for pressurized fluid transportation. The steel pipe has strong pressure bearing capacity, and good plasticity, and is convenient for welding and processing; the spiral seam submerged arc welded steel pipe SY5037-83 for general low-pressure fluid transportation is made by double-sided automatic submerged arc welding or single-sided welding for water, gas, Submerged arc welded steel pipes for conveying general low-pressure fluids such as air and steam.
Commonly used standards for spiral steel pipes are generally divided into SY/T5037-2000 (ministry standard, also known as spiral seam submerged arc welded steel pipes for ordinary fluid transportation pipelines), GB/T9711.1-1997 (national standard, also known as oil and gas industry transportation steel pipes) Delivery technical conditions part: A-grade steel pipe (GB/T9711.2 B-grade steel pipe with strict requirements), API-5L (American Petroleum Institute, also called pipeline steel pipe; which is divided into two levels of PSL1 and PSL2), SY /T5040-92 (spiral submerged arc welded steel pipe for piles).
Post time: Feb-22-2023