Common standards for Spiral Pipe Assemblys are generally divided into: SY/T5037-2018 (ministry standard, also known as spiral seam submerged arc welded steel pipe for common fluid transportation pipeline), GB/T9711.1-1997 (national standard, also known as technical conditions for delivery of oil and gas industry transportation steel pipe part I: grade a steel pipe (strict requirements include GB/T9711.2 grade B steel pipe)), API-5L (american petroleum institute, also known as pipeline steel pipe; which is divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral seam submerged arc welded steel pipe).
Common standards for spiral pipes are generally divided into: SY/T5037-2018 (ministry standard, also known as spiral seam submerged arc welded steel pipe for common fluid transportation pipeline), GB/T9711.1-1997 (national standard, also known as technical conditions for delivery of oil and gas industry transportation steel pipe part I: grade a steel pipe (strict requirements include GB/T9711.2 grade B steel pipe)), API-5L (american petroleum institute, also known as pipeline steel pipe; which is divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral seam submerged arc welded steel pipe).
Spiral Pipe Assembly for pressurized fluid transportation are mainly used for pipelines transporting oil and natural gas. The steel pipes have strong pressure bearing capacity and good plasticity, which are convenient for welding and processing. Spiral seam submerged arc welded steel pipes for general low-pressure fluid transportation are made by double-sided automatic submerged arc welding or single-sided welding, which are used for water, gas, air, steam and other general low-pressure fluid transportation.
