Project Description

Spiral Pipe

  • spiral welded pipe
  • spiral pipe

Spiral steel pipes are made of steel coil by automatic submerged arc weld under normal atmospheric temperature. The double-sided submerged arc welding processing boasts not only in high deposition rate, but also with deep penetration ability, good quality and appearance of welding line and high density.

During manufacturing process of spiral steel pipe, steel plate has uniform deformation and light residual stress, thus the surface has no scratches. Spiral pipe has more flexible thicknesses and diameters, especially in making high-grade thick pipes with small or medium aperture.

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Application:
Spiral steel pipe is mainly used in public waterworks, petroleum and natural gas industry, chemical industry, electric power industry, agricultural irrigation and urban construction etc.

  • Liquid transportation: water supply, drain water, petroleum transportation, etc.
  • Gas transmission: coal gas, steam, liquefied petroleum gas, gas etc.
  • Structure: piling, bridge, wharf, road, architectural structure and so on.

Material:

  • API 5L : Gr.B,X42,X46,X52,X56,X60,X65,X70,X80.
  • ASTM A53 : Gr.B.
  • DIN1626 : ST37,ST44,ST52
  • ASTM A252 : Gr.2,Gr.3.
  • GB/T9711 : Q235B,L245,L290,L320,L360,L390,L415,L450,L485,L555
  • Q345B(16Mn)

Execute Standard:

  • API SPEC 5L Specification for Line Pipe
  • ASTM A53
  • ASTM A252
  • AWWA C200
  • DIN1626
  • GB/T9711-2011
  • SY/T5037