Spiral tube and its standard classification:
Pressure fluid conveyor use of spiral joints buried arc welding steel pipes (SY5036-83) is mainly used to transport oil and natural gas pipelines; for underwritten fluid transportation, high-frequency welding steel pipe (SY5038-83), high-frequency connection welding method is used Welded and used for the spiral seam high -frequency welding steel pipe for pressure transport. The steel pipe has strong pressure and good plasticity, which is convenient for welding and processing. Generally, low-voltage fluid conveyor uses a spiral joint buried arc welding steel pipe (SY5037-83). Gas, air, and steam general low -voltage fluid conveyor buried arc welding steel pipes.
The common standards of spiral tubes are generally divided into: SY/T5037-2000 (ministerial standards, also known as ordinary fluid conveying pipes for buried arc welded steel pipes), GB/T9711.1-1997 (national standard, also known as oil and natural gas industry transportation The first part of the technical conditions of steel pipe delivery part: Class A (Class A (GB/T9711.2 B-Class steel pipe) is required to be strict), API-5L (American Petroleum Association, also known as pipeline steel pipe; including PSL1 and PSL2 two Level), SY/T5040-92 (pile with spiral joints buried arc welding steel pipes).
Spiral tube material: Q235A, Q23B, 0CR13, 1CR17, 00CR19NI11, 1CR18NI9, 0CR18NI11nb. Q345 L245 x46 X70 X80 X95
The spiral steel pipe has a wide range of uses, suitable for the oil and natural gas industries, construction, bridge and tunnel engineering, and agriculture and fisheries. Its high strength, corrosion resistance and good sealing performance make it one of the important materials in all walks of life.
