... seamless steel pipeStandardsASTM, BS, DIN, JIS, GB, etc.Grade:Q345A/B, Cr5Mo, 12Cr1MoV, 10CrMo910,,27SiMn, 15CrMo, 30CrMo, 34CrMo4, etcOther standard ... to be confirmed by clients Marking: as per customer's requirementChemical compositions: Cr5Mo,15CrMo,13CrMo44,refer to relative standard ... Seamless pipes for petroleum20,12CrMo,15CrMo GB5310-95 ASTM A 106-99 DIN 17175-79High-presure Seamless pipes for ...