Forged gate valve 1.CE,ISO9001,API6D,CQC,PDO. 2.size 1/ ... ,F11,F22,F91,F304(L,F316(L,F321,LF2 Forged gate valveApplication standards:1. Design and manufacture conform to: API 602 ... ; F22; F91; F304; F304L; F316; F316L; F321; LF2 etc.Forged gate valve : CZTV could design and manufacture as your request.(forged ...