Alloy / Carbon steel pipes / boiler tube, all son seamless steel pipes Alloy / Carbon steel pipes / boiler tubeMaterial: EN: S235JR, S235JO, S235J2, S235JR, ST37, ST52, S355JR, ... , 20G, 27SiMn, 12CrMoVG, 15CrMoG, 10CrMo910,WB36,Cr5Mo,Cr9Mo,Sizes scope: Cold drawn, OD, 3/8” – 3-1/2”( 17.1mm ) - ( 101.6mm ... Third Inspection: LR, ABS, GL, DNV, SGS, BV, etc Alloy / Carbon steel pipes / boiler tube