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Spiral Submerged Arc Welded Steel Pipe

Spiral Submerged Arc Welded Steel Pipe
65.7K
Key words: SAW, SSAW, API 5L, large diameter, carbon steel, line pipe. Production: welded pipe, SSAW, hot rolled, cold drawn Diameter size: 405mm to 1524mm Wall thickness: 6mm to 40mm. Spiral Submerged Arc welded steel pipe

Product Details

Key words: SAW, SSAW, API 5L, large diameter, carbon steel, line pipe.
  Production: welded pipe, SSAW, hot rolled, cold drawn
  Diameter size: 405mm to 1524mm
  Wall thickness: 6mm to 40mm.
  Length of pipe: 8m-12m or as customer’s require.
  Standard: API 5L, ASTM A53 etc.
  Steel grade: ASTM A 53: Gr. A, Gr B, Gr C, Gr.D; API 5L: A, B, X42, X46, X52, X56, X60, X65 X70; GB: Q195, Q215, Q235, Q275, Q295, Q345 etc.
  End: plain end, protected with caps.
  Surface painting: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,? Fusion Bond Epoxy, 3-layers PE).
  Application: For oil and gas pipeline systems, but in petroleum design specification, the SSAW pipe / HSAW pipe could only be applied in class 3 and class 4 areas. Construction structure, water transport and sewage treatment, thermal industry, buildings etc.
  Delivery time: The specific delivery time 20-45 days depends on the items and quantity of your order
  Loading port: Tianjin port, China
  Marking Requirements:
  ●Manufacturer’s name, brand, or trademark
  ●Heat number
  ●Method of pipe manufacture
  ●Size, weight, length
  ●Wall thickness
  ●Standard and steel grade
  F&Q:
  Q1. what is your terms of payment?
  A.   100% TT;
  30%TT in advanced, 70% against copy of B/L
  L/C at sight
  You can also pay by West Union, Money Gram, Crash.
  Q2. what is your terms of delivery?
  A.  EXW, FOB, CFR, CIF
  Specification:
  Difference between ERW Pipes, SSAW Pipes and LSAW Pipes
  1. Electric Resistance Welding Pipes
  Electric Resistance Welding (ERW) pipes have two kinds of welding, induction welding and contact welding. The ERW pipe applied wide hot rolling steel profile as raw material, and went through pre-bending, continuous forming, welding, straightening, cutting and other processes. The pipe has short weld joints, high dimensional accuracy, uniform thickness, and excellent surface and can bear high pressure. However, it also has shortcomings, such small diameter and thin wall, and the weld joints are easy to be eroded. Currently, ERW pipes are mainly used to transport gas as well as oil to city residents.
  2. Spiral Submerged-Arc Welding Pipes
  Spiral submerged arc welded (SSAW) pipes has spiral welding joints and the pipes are welded and formed at the same time. The strip steel with the same specification can produce SSAW pipes with various diameters. The welding joints can avoid major stress and have better force resistance. Disadvantages are poor geometrical diameters; longer welding joints and joints are easily to have cracks, porosity and other welding defects. According to the design specification of oil and gas pipeline, SSAW pipes only can be used in the third and fourth class areas. Developed countries have improved the technology, apart forming and welding, and have pre-welding and precise welding processes which make the quality of welding close to UOE pipes. Currently, the domestic market doesn’t master this technology which needs to be improved. SSAW pipes produced by traditional technique are widely used in the project of natural gas transmission from West to East China. The US, Japan and Germany believe that it’s not suitable to use SSAW pipes as main trunk; Canada and Italy use it partially and Russia use it in a small scale with strict additional condition. China, due to historical reasons, still uses SSAW pipes as main trunks in majority areas.
  3. Longitudinally Submerged Arc Welding Pipes
  Longitudinally Submerged Arc Welding (LSAW) pipes use single plate steel as raw material, applied double-sided submerged arc welding. The finished products have larger specifications and the welding joints have excellent ductility, plasticity and good sealing. LSAW pipes have large diameter, thick wall and can withstand high pressure and low temperature. LSAW pipes play a major role in oil and gas pipelines with features of high strength, high quality and long distance. According to the standard of American Petroleum Institute (API), the LSAW pipe is the only designated pipe in large scaled oil and gas transportation, especially when the pipelines cross the densely populated urban areas and the first and second class cities.
  Hot Tags: spiral submerged arc welded steel pipe, China, manufacturers, suppliers, factory, price, in stock

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