SAW(SAWL,SAWH)Quality Standard and Steel Grade

　　SAW(SAWL,SAWH): Spiral Welded

　　SSAW: Spiral Submerged-arc Welded

　　Quality Standard:

　　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

　　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.

　　SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service

　　SY/T 5040 Spiral submerged arc-welded steel pipe piles

　　CJ/T 3022 Spiral submerged-arc welded steel pipe for municipal heat supply

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

　　ASTM A252 WELDED AND SEAMLESS STEEL PIPE PILES

　　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, 08F, 10F, 10, HG5, DF08 SPHC, M8

　　We have adopted advanced production equipment and technologies to manufacture our Seamless steel pipe and ERW Steel Pipe , which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.