procurement of cpvc pipes and fittings for drain seperation system at ntpc unchahar supply of cpvc pipes and fittings for drain seperation system at ntpc unchahar , pvc pipe: f441, plain ends, sch-80, 100mm , pvc pipe: f441, plain ends, sch-80, 150mm , pvc pipe: f441, plain ends, sch-80, 200mm , cpvc coupling soc-type a:f439 sch-80 4 , cpvc coupling soc-type a:f439 sch-80 6 , cpvc coupling soc-type a:f439 sch-80 8 , f:439:elbow-90 ( soc ) a:f439:sch-80:size-4 , f:439:elbow-90 ( soc ) a:f439:sch-80:6 , cpvc elbow 90 soc-type a:f439 sch-80 8 , f:439:elbow-45 ( soc ) a:f439:sch-80:8 , cpvc tee socket-type a:f439 sch-80 4 , cpvc tee socket-type a:f439 sch-80 6 , cpvc tee socket-type a:f439 sch-80 8 , flange-cpvc astm:d4024 cl-150 100mm , flange-cpvc astm:d4024 cl-150, 150 mm nb , flange-cpvc astm:d4024 cl-150, 200 mm nb , red. socket-cpvc astm:f439 sch-80 100x50 , red. socket-cpvc astm:f439 sch-80 100x65 , red. socket-cpvc astm:f439 sch-80 100x80 , b-fly v / v:man-wafr:cpvc pn10:50 mm , b-fly v / v:man-wafr:cpvc pn10:65 mm , btr-fly v / v: man-wafer, cpvc pn10, 80mm , b-fly v / v:man-wafr:cpvc pn10:100mm , b-fly v / v:man-wafr:cpvc pn10:150mm , btr-fly v / v: man-wafer, cpvc pn10, 200mm , check v / v:sw-cpvc:iso16137:150:50mm , check v / v:is:11733:sw-cpvc:150:65mm , check v / v:sw-cpvc:150:80mm , check v / v:sw-cpvc:150:100mm , check v / v:sw-cpvc:300:150mm , solvent cement for pvc / pvcu pipe fitting , solvent cement primer for pvc pipe / fitng