Forged os & y Gate Valve 1.CE,ISO9001,API6D,CQC,PDO. ... A105,F5,F9,F11,F316,LF2 etc Forged os & y Gate ValveApplication standards:1. Design and manufacture conform to ... conform to: API 5984. Structure features: B.B OS&Y5. Materials conform to: ANSI/ASTM6. Main materials: ... F304; F304L; F316; F316L; F321; LF2 etc.Forged os & y Gate Valve: CZTV could design and manufacture as your request.Update Date ...