ERW STEEL PIPES/ERW CARBON STEEL PIPES

　　Process:

　　ERW (Electric Resistance Welded)

　　HFI (High Frequency Induction)

　　EFW(ELECTRIC FUSION WELDED TUBE)

　　HFW(High-Frequency Welding)

　　Quality Standard:

　　ERW HFI , EFW,:

　　GB/T3091 Welded steel pipe for low pressure liquid delivery

　　GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines

　　IS: 3589 Steel tubes for water and sewage

　　IS : 1978-1982? Steel tubes for use in transportation of oil; gas & Petroleum products?

　　BS: 1387 Steel Tubes for use for Water, Gas, Air and Steam

　　ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

　　DIN 2458 WELDED STEEL PIPES AND TUBES

　　EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties

　　API 5L Line Pipe

　　Coating Standard:

　　ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

　　ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems

　　DIN 30670 Polyethylen coatings of steel pipes and fittings

　　Steel Grade:

　　BS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52

　　ASTM A 53: Gr. A, Gr B, Gr C, Gr.D

　　API 5L: A, B, X42, X46, X52, X56, X60, X65 X70

　　GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555

　　GB/T3091, SY/T5037, SY/T 5040,CJ/T 3022:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL,

　　Hebei shengtian pipe-fitting group Co., ltd is specialized in manufacturing and exporting a variety of stainless steel,carbon steel pipe fititng such as elbows, tees, reducers ,forged pipe fitting etc. We are standard and non-standard flange mamufacure.All kind of pipe fittings, flanges are according to the international standard to produce.Each product,the quality meet the international standard inspection technical standard. We warmly welcome customers at home and abroad to visit our factory and seek common development.