... pipe, alloy seamless pipe p22StandardsASTM, BS, DIN, JIS, GB, etc.Grade:Q345A/B, Cr5Mo, 12Cr1MoV, 10CrMo910,,27SiMn, 15CrMo, 30CrMo, 34CrMo4, etcOther standard ... or without edge protector, steel hoop and seals, or as per customers' requirementsother material or pipes we also can supply: alloy seamless steel pipe