tender for supply of various gate valve, nrv and gun metal gate valve for ash handling system of 210mw atps mppgcl chachai , cs gate valve with both end flange and fastners, class-150 moc valve body cs_ as per astm a216gr. wcb flanged end rising stem (no casting) sizes :- , cs gate valve 50 nb (with flange ends) , cs gate valve 80 nb (with flange ends) , cs gate valve 300 nb (with flange ends) , nrv class 125 s , nrv 50 nb for drain pump (with flange ends) , nrv 65 nb for drain pump (with flange ends) , nrv 80 nb for drain pump & bh (with flange ends) , nrv 150 nb for ofp (with flange ends) , nrv 200 nb for clf pump (with flange ends) , nrv 250 nb for hp/lp pump (with flange ends) , nrv 300 nb for recovery pump (with flange ends) , gun metal gate valve , gun metal gate valve 15 nb (with screw ends) , gun metal gate valve 20 nb (with screw ends) , gun metal gate valve 25 nb (with screw ends) , gun metal gate check valve 20 nb (with screw ends)