forged steel oil gas valve 1.CE,ISO9001,API6D,CQC,PDO ... A105,F5,F9,F11,F316,LF2 etc forged steel oil gas valveApplication standards:1. Design and manufacture conform to ... Screw thread dimension conform to ANSI B 1.20.13. Test and inspection conform to: API 5984. Structure features: B ... F304; F304L; F316; F316L; F321; LF2 etc.forged steel oil gas valve CZTV could design and manufacture as your request ...