seamless steel tube The features are precise dimension, good surface and great price seamless steel pipeThis product applies to high temperature service such as for superheater.OD:6-108mm;W/T: 1-16mm;Standard: ASME SA210,SA213, SA192;SA179Material : 20G,20MnG,25MnG,15MoG,20MoG,12CrMoG,15CrMoGT23, T22,T12,T11 ,T5,T2,210A,210B,210C