Detailed Product Description API 5CT (CASING AND TUBING ) J-55, API 5L (Line Pipe ) A / B / X42 / X46 / X52 / X56 / X60 / X65 / X70 / X80, ASTM A 106 (Seamless Carbon Steel Pipe for High Temperature Service ) Gr A / Gr B / Gr C, ASTM A 53 (Pipe Steel Black and Hot Dipped Zinc Coated Welded and Seamless) Gr A-Black / Gr A-Zinc / Gr B-Black / Gr B-Zinc / Gr F-Black / Gr F-Zinc, ASTM A 179 (Seamless Cold Drawn Low Carbon Steel Heat Exchanger and Condenser Tubes) , ASTM A 192 (Seamless Carbon Steel Boiler Tubes for High Pressure Service) , ASTM A 210 (Seamless Medium Carbon Steel Boiler and Superheater Tubes) Gr A-1 / Gr C, ASTM A 213 (Seamless Ferritic and Austenitic Alloy Steel Boiler Superheater and Heat Exchanger Tubes) T2 / T5 / T11 / T12 / TP304L / TP316 / TP316H / TP316N / TP316L / TP316LN / TP321, ASTM A 335 (Seamless Ferritic Alloy Steel Pipe for High Temperature Service) P1 / P2 / P5 / P5b / P5c / P7 / P11 / P12 / P15 / P21 / P22 / P91, BS 1387 (Steel Tubes and Tubulars Suitable for Screwing to Bs 21 Pipe Threads) , DIN 1626 (Welded Circular Tubes of Non Alloy Steels with Special Quality Requirements) USt37.0 / St37.0 / St44.0 / St52.0, DIN 1629 (Seamless Circular Tubes of Non Alloy Steels with Special Quality Requirements) St37.0 / St44.0 / St52.0, DIN 2391 ( Seamless Precision Steel Tubes) St35 / St45 / St52, GB GB T3087 (Seamless Steel Pipe For Low and Medium Pressure Boiler) 10 / 20, GB GB T5130 (Seamless Steel Pipe For High Pressure Boiler) 20G, GB GB T8162 (Structure Pipe) 10 / 20 / Q345, GB GB T8163 (Seamless Pipe For Fluid Pipe) 10 / 20 / Q345, ISO 3305 (Plain end Welded Precision Steel Tuves) R28 / R44, JIS G 3461 (Carbon Steel Tubes for Boiler and Heat Exchaner) STB340 / STB410 / STB510 / , JIS G 3445 (Carbon steel tubes for machine structural purposes ) STKM11A / STKM12C / STKM14B / STKM15C / STKM18A / STKM19A / Other standard spec.(ABS / ASME SA / BV / DS /) Process(A / AM / AT / B / EFW / ERW / FB / Forged / RBAW / Seamless / SAW / SRM / Welded /) Application( Galvanized / High Carbon / Low Carbon / High Temperature / Black Pipe / Structure / Low Temperature / Pipes Piles / Cold Rolled / Coated Pipe / Oil & Steam & Water & Air / Ferritic / Food Industry / Structure / Desk / SUS304/304L / SUS316/316L / Clean Tube / Low Tinned Tube / Super-Clear / S31803 / Low