Standard:API, ASTM, BS, DIN, GB Standard2:API 5CT, API 5L, API 5DP, ASTM A106-2006, ASTM A179-1990, ASTM A53M-2007, ASTM A513-2007, ASME B36.19M-2004, BS 1387, BS 1139, BS EN 10297, BS 31, DIN EN 10025, GB/T 3090-2000, GB/T9711 Grade Group:10#-45#, 16Mn, A53-A369, API J55-API P110, Q195-Q345, ST35-ST52 Grade:10#, 20#, 45#, 16Mn, A53(A,B), A106(B,C), API J55, API K55, API N80, API L80, Q235, Q345, St37, St52.4, ST37.4 Thickness:2 - 40 mm Section Shape:Round Outer Diameter(Round):17.2 - 508 mm Place of Origin:Tianjin, China (Mainland) Application:oil pipe, gas pipe, structure pipe, etc Technique:Cold Drawn, Hot Rolled, Seamless Certification:API Surface Treatment:Galvanized Special Pipe:Thick Wall Pipe Alloy Or Not:Non-alloy Iron Protector, plastic caps End treatment:plain, bevel, threaded, groove, etc Surface treatment:3PE, painted, galvanized, power coated, etc Third party inspection:Accept BV, SGS, COC, etc