... -SP-79,JIS B2316 material Carbon steel(ASTM A105, Q235,A350LF2,A350LF3,) Stainless steel(ASTM A182 F304, F304L,F316,F316L ... qualification ISO9001:2008 ,ISO 14001 OHSAS18001 acquired the license for manufacturing special pressure Pipline equipments from AQSIQ , API ... Market. packing in wooded cases or pallets,or as for clients' requirements application Petroleum, chemical, machinery, electric power ...