... MSS-SP-79,JIS B2316 material Carbon steel(ASTM A105, Q235,A350LF2,A350LF3,) Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321 ... :2008 ,ISO 14001 OHSAS18001 acquired the license for manufacturing special pressure Pipline equipments from AQSIQ , API and became a ... chemical, machinery, electric power, shipbuilding, papermaking, construction, etc Special design available as the requirement of customer