Item name: seamless steel pipe 1.Outer Diameter: 18mm-813mm 2.Wall Thickness: 2mm-80mm 3.Grade: ASME API 5L GR.B/ X42/ X46/ X52/ X56/ X65/ X70 API 5CT K55/ J55/ N80/ L80/ P110 ASTM A106 GR.B / C ASTM A53 GR.B A333 GR.1-GR6 A335 P11/ P22/ P5/ P91/ P9/ P12 ASTM A213 T5/ T11/ T22/ T12T/ T9/ T91 ASTM A519 1020/ 4130 A210-A/ C A192 A179-C DIN DIN17175 ST35.8 / ST37 / ST45-8 DIN1626 ST42/ ST37-2/ ST52-3 DIN1629 ST52/ ST35/ ST45/ / ST52-4/ ST55 JIS STKR490 GB GB/ T8162/ 8163 10# / 20# / 35# / 45# / Q345B( 16MN) GB/ T3087/ 5310 20G/ 12Cr1MoV/ 15CrMoG GB/ T9948 12CrMo/ 1Cr5Mo/ 1Cr19Ni11Nb 4.Usage: Natural Gas, Water, Petroleum , Electric power plant and Oil industry 5. Certification: ISO9001: 2000 API 5L CE 6.Packaging: painting BE Plastic caps in the end 7.Market: Middle East USA Austrilia Korea Japan Africa Europe 8.Quality Control: X-ray testing, ultrasonic testing, hydrostatic pressure testing machine, tensile testing machine, metallographic analyzer, chemical laboratory and complete test systems 9.The third Quanlity Control: SGS BV