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lined pipe, clad pipes, induction bends, Pipe Fittings - Piping System Solutions

lined pipe, clad pipes, induction bends, Pipe Fittings - Piping System Solutions

Cangzhou Pipeline System Pipe Technology Co. Ltd

Cangzhou Pipeline System Pipe Technology Co. Ltd
No. 33 Ecomomic Development Zone, Cangzhou, Hebei, China

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June 9, 2025

welded pipe

welded pipe

by admin / Friday, 15 December 2017 / Published in Pipes

American Piping distributes an extensive selection of welded pipe, including Electric Resistance Welded (ERW) and Double Submerged Arc Welded (DSAW) carbon steel pipe — along with their respective flanges and fittings. We also carry A139 — Grade B, A252 Grades 2 & 3 spiral weld pipe, and A691 chrome moly pipe.

Welded pipes are used especially for pipeline constructions and for larger dimensions in the process plants; any specifications and qualities are part of our supply program.
For example, we supply carbon steel pipes for pipeline projects throughout the world according to:
API 5L X 52, X60, X65, X70
Welded carbon and alloyed process plant pipes in acc. to below standards:
ASTM A333, 671, 672, 691
Welded Stainless steel, special alloys pipes for chemical and petrochemical plants to:
ASTM A 312, 358, 778, 928, ASTM B 619, B725
All materials are also available in acc. to equivalent DIN/ EN standards and grades.

Welded pipe manufacturing
At the start of the welded pipe manufacturing process so called slabs or billets are cast in a steel mill. Dependent on the external dimensions and wall thickness there are different methods of producing welded pipes and tubes: Electric Resistance Welding (ERW), Fusion Welding (EFW) and Double Submerged Arc Welding (DSAW). In the ERW and EFW manufacturing process welded pipes are formed by hot or cold rolling plate and welding the seam. In order to keep the outside (O.D.) surface of a welded pipe smooth and uniform a cutting tool called scarfing blade is used to remove the weld flash. Scarfing from the inside (I.D.) welded flash is also possible. With a heat treating at the end of the manufacturing process the weld zone of the steel pipe can be made less visible. Due to the weld seam lower operating pressures are stated in accordance with ASME compared to seamless pipes. In general welded tubes possess tighter dimensional tolerances than seamless pipes and are less costly if produced in same quantities.

SSAW steel pipe(Spiral Submerged- Arc Welded Steel Pipe) is also known as the SAWH Steel pipe(Submerged-arc Welded Helical pipe)

Longitudinal Submerged-Arc Welded Steel Pipe
Process: LSAW – UO(UOE), RB(RBE), JCO(JCOE, COE); DSAW – Double Submerged Arc Welded
Usage: Used for low pressure liquid delivery, such as water, gas, and oil.
Standard: API 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, GB/T3091, GB/T9711
Certificate: API 5L PSL1 / PSL2, API 5CT
Out Diameter: 323.9mm -1820mm(12”-72”)

Electric Resistance Welded Steel Pipe:The manufacturing starts by cold-forming a coiled plate of steel with eligible thickness and certain width into a cylindrical shape. As the cylindrical plates come together, an electric current using heat merges the edges together to create the final product.
Usage:Used for low pressure liquid delivery, such as water, gas, and oil. Oil drilling and machinery manufacturing, etc.
ERW: Electric Resistance Welded pipe
HFI: High Frequency Induction weld pipe
EFW: Electric Fusion Welded Pipe:Processing of Electric Fusion Welding, also called Continuous Welding begins as coiled steel with appropriate thickness, width and weight is made. To form a continuous ribbon of steel several coils are welded together.

 

 

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What you can read next

API 5L Tubing, Casing and Line Pipes
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  • ABOUT US
    • EQUIPMENT
  • PRODUCTS
    • MECHANICAL LINED PIPE
    • INDUCTION PIPE BENDS
    • CLAD PIPES AND CLAD PIPE FITTINGS
      • CLAD PIPE
      • CLAD PIPE FITTINGS
        • ELBOW
        • TEE
        • BUTT WELD CAP
        • BUTT WELD REDUCER
    • Steel Pipes
      • ERW STEEL PIPES
      • SEAMLESS STEEL PIPE
      • LSAW STEEL PIPE
    • Ceramic Lined Fittings
    • PIPE FITTINGS
      • ELBOW
      • Cap
      • FLANGE
      • LARGE DIAMETER FITTING
    • Pipe Fittings
      • Bend Pipe
      • Butt Weld Elbows
      • Butt Weld Tee
      • Reducer
  • HSE
  • PROJECTS
    • RFQ & inquiry
    • customer inquiry
  • CERTIFICATES
  • NEWS
    • Pipeline System@DUBAI ADIPEC 2017 EXHIBITION
    • Technology
  • CONTACT US

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Cangzhou Pipeline System Pipe Technology Co.,Ltd

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  • Large Diameter butt weld fittings 2″~ 84″

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CANGZHOU Pipeline System PIPE TECHNOLOGY CO.,LTD.

TEL: +86-317-8886666
Email: [email protected]

ADD: No. 33 Ecomomic Development Zone, Cangzhou, Hebei, China

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