Standard: GB, ASTM Outer Diameter: 16 - 460 mm Thickness: 3 - 60 mm Specification: Type seamless steel pipePipe Size1/2"—48" (DN15-1200)Wall ThicknessSCH10,SCH20,SCH30,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,SCH140,SCH160,XXS,DIN, JIS standard thicknessLengthFixed: 3.0 , 5.8 , 5.85 , 5.9 , 6.0 ,11.8 , 12.0m. Random length: 5-12mStandardASTM A53,A106,API 5L,ASME B36.10M-1996DIN1626,DIN1629,DIN17175 ...