procurement of di pipe for laying of inlet pipe and distribution reserve main for semi underground reservoir cum booster pumping station near 4 no. bandh stadium in wd no. 140, br-xv procurement of di pipe for laying of inlet pipe and distribution reserve main for semi underground reservoir cum booster pumping station near 4 no. bandh stadium in wd no. 140, br-xv , d.i pipe spun ( class k-7 ) 300 mm dia ( tyton joint ) conforming to is:8329 / 2000 class k-7 suitable for push-on-joint ( rubber gasket joining ) with inside cement mortar lining and outside bituminous / synthetic resincoating compatible with the metallic zinc coating as per clause a-8 . , d.i pipe spun ( class k-7 ) 150 mm dia ( tyton joint ) conforming to is:8329 / 2000 class k-7 suitable for push-on-joint ( rubber gasket joining ) with inside cement mortar lining and outside bituminous / synthetic resincoating compatible with the metallic zinc coating as per clause a-8 .