tender for laying of cooling water pipes in trenches and controlling gate valves at 132kv switchyard at ganguwal and kotla power houses.; 1 aor (based on csr 28.106) for laying, fixing, testing and commissioning of “c” class heavy duty ms pipe conforming to indian standard is:1239/3589 including fittings like tees, bends, sockets, elbows, flanges, tapers, nuts bolts, gaskets etc. on surface and providing angle iron support or cement concrete block as support including painting with two or more coats of synthetic enamel paint of required shade complete in all respect (for 80mm internal dia pipe)(a) 80 mm internal dia. pipe(as per aor based on -28.106) 2 providing laying, fixing testing and commissioning of ‘c’ class heavy duty ms pipe confirming to indian standard is: 1239/3589 including fitting like tees, bends, sockets, elbows, flanges, tapers, nuts bolts, gaskets etc. on surface and providing angle iron support or cement concrete blocks as support including painting with two or more coats of synthetic enamel paint of required shade complete in all respects 3 (a) 100 mm internal dia. pipe(as per csr-2020 item no.28.106 (a) 4 (b) 150 mm internal dia. pipe(as per csr-2020 item no.28.106 (b) 5 add unforeseen charges such as excavation work during laying of pipe, providing paint &other miscellaneous items (required during execution of work)