1.Cr5Mo,15CrMo 2. OD: 16-824mmWT: 2-100mm 3. API5CT-0865, API 5L-0593 4.Resistance to high presure , ... seamless steel pipeStandardsASTM, BS, DIN, JIS, GB, etc.Grade:Q345A/B, Cr5Mo, 12Cr1MoV, 10CrMo910,,27SiMn, 15CrMo, 30CrMo, 34CrMo4, etcOther standard and ... ,ST45 Seamless pipes for petroleum20,12CrMo,15CrMo GB5310-95 ASTM A 106-99 DIN 17175-79High-presure Seamless pipes for fertilizer ...