Spiral Steel Pipe
National Standard for Spiral Steel Pipes
2022-04-14
Phosphating process
Phosphating process
2022-04-15

Welded Steel Pipe Executive Standards

The meaning of Welded Steel Pipes

  1. Welded Steel Piped;Galvanized welded steel pipes for low pressure fluid transportation (GB/T3091-1993) is also called galvanized electric welded steel pipes, commonly known as white pipe. It is a hot dip galvanized welded (furnace welding or electric welding) steel pipe used for conveying water, gas, air oil, heating steam, warm water and other general low pressure fluids or other purposes. The wall thickness of steel pipe is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe. The end of the pipe is divided into galvanized steel pipe without thread and galvanized steel pipe with thread. Steel tube specifications are indicated by nominal diameter (mm), which is an approximation of the inner diameter. It is customary to use inches, such as 11/2.
Welded Steel Pipes
  • 2 Common carbon steel wire bushing (GB3640-88) is used to protect the wire in industrial and civil buildings, installation of machinery and equipment and other electrical installation projects.
    3. Straight seam electric welded steel pipes (YB242-63) is a steel pipe whose weld is longitudinally parallel to the steel pipe. Usually divided into metric welded steel pipes, welded thin-wall pipe, transformer cooling tubing and so on.
    4. Spiral seam submerged arc welded steel pipes (SY5036-83) for pressure fluid transportation is a spiral seam steel pipe used for pressure fluid transportation, which is made of hot rolled steel strip as tube blank, often formed at warm temperature and welded by double-sided submerged arc welding method. The steel pipe has strong bearing capacity and good welding performance. It is safe and reliable to use after all kinds of strict scientific inspection and testing. Large diameter steel pipe, high transmission efficiency, and can save the investment of pipeline laying. Mainly used for conveying oil and natural gas pipelines.
Welded Steel Pipe
  • 5. High frequency helical seam welded steel pipes (SY5038-83) used for pressure fluid transportation is a high frequency helical seam welded steel pipes used for pressure fluid transportation, which is made of hot rolled steel strip as tube blank, often warm spiral shaped and welded by high frequency lap welding method. The steel pipe has strong bearing capacity and good plasticity, which is convenient for welding and processing. After all kinds of strict and scientific inspection and testing, the use of safe and reliable, large diameter steel pipe, high transmission efficiency, and can save the investment of pipeline laying. It is mainly used for laying pipelines for conveying oil and natural gas.
Welded Steel Pipe
  • 6. Helical seam high-frequency welded steel pipes (SY5039-83) for general low-pressure fluid transportation is made of hot rolled steel strip as tube billet, often formed by warm spiral, and welded by high frequency lap welding method for general low-pressure fluid transportation.
    7. Spiral welded steel pipes for pile (SY5040-83) is made of hot rolled steel strip as pipe blank, often warm spiral forming, double-sided submerged arc welding or high-frequency welding, used for civil construction structure, wharf, bridge and other foundation pile steel pipe
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