procurement of di pipe for laying of inlet pipe and distribution reserve main for semi underground reservoir cum booster pumping station at subhas pally in kamdahari in wd no. 111 procurement of di pipe for laying of inlet pipe and distribution reserve main for semi underground reservoir cum booster pumping station at subhas pally in kamdahari in wd no. 111 , 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 .