procurement of diff valves and erw pipe for ac cooling tower refurbishment at sgtpp, wbpdcl procurement of diff valves and erw pipe for ac cooling tower refurbishment.at sgtpp, wbpdcl , procurement of different valves and erw ms pipe for ccr ac cooling tower refurbishment ( capex-2022-#23 ) .at sgtpp, wbpdcl , gate valve 150nb, class-150 moc-cs, body & bonnet-a 216-wcb, stem-ss 410, wedge-a 216-wcb+ 13% cr , seat-a 105+ 13% cr , hand wheel operated, with matching f bolt hole dia-22mm, no of bolt-8, flange to flange-267 mm, flange thickness-25mmrn , gate valve, 250nb, cs double flange, hand wheel operated, class150 , gate valve 125 nb , gate valve, 200nb, cs with handwheel , gate valve, 100 mm, cast carbon steel double flange rising stem, body, bonnet & wedge mat- astm a 216 ( wcb ) , body & disc seat mat -ss-304 & stem ss-410, with 2 no matching flange , valve, nrv type, 100 nb # , nrv for vam 125mm dia , valve, 200nb, nrv, cs, cl-300, rl, flc # , globe valve, nb 50 # , globe valve;40 nb, application:-water moc :fcs; working pressure:150mwc; working temp:50 deg c , pipe, ms black erw, 250 nb , each roll should contain