... ,S235JRG1 Typeseamless steel pipeOuter diameter6-820mmWall thickness1mm-100mmStandardASTM ,API ,DIN JIS GB ASMEMaterialA25, Grade A, B, X42, X46, X52, X60, X65 ... +QT ,C45,35CrMo4 ,42CrMo4, DIN EN 10025 St 33 ,DIN EN 10025 St 37-2,DIN EN 10025 R St 37-2,DIN ... .8,DIN EN 10083-2 C22N,DIN EN 10083-2 C35N ,DIN EN 10083-1 CK45V,JIS G3452 SCP,JIS G3457 STPY,JIS G3454 STPG38,JIS G3454 STPT38 ...