tender for supply, erection and commissioning of chilled water outlet header pipe lines and bends with insulation after dismantling of damaged chilled water pipe lines and bends , supply, erection and commissioning of chilled water outlet header pipe lines and bends with insulation after dismantling of damaged chilled water pipe lines and bends , ms erw pipe 200 nb (as per class c heavy duty is 1239) (including insulation as per sl.no.04 of annexure - 1) ms erw 200 nb pipe wall thickness - 5.4 mm material - mild steel (as per class c heavy duty is 1239) , ms erw pipe 200 nb - 90 degree bend (as per class c heavy duty is 1239) ms erw 200 nb bend 90 degree bend material - mild steel (as per class c heavy duty is 1239) , ms 200/150 nb reducer material - mild steel (as per class c heavy duty is 1239) , charges for erection of new chilled water pipe line with fittings, insulation and dismantling the damaged insulated chilled water pipe line and devolution to stores details of wroks to be carried out: 1. dismantling the existing damaged insulation, plastering, wire mesh and damaged pipe of ucb-1, 2 & 3 control room area. 2. erection of the new ms erw pipeline with required m.s. bends and reducer. 3. providing the insulation with following steps. a) applying the liquid bituminous over the new pipe line. b) fixing the thermocole pipe section two halves in the new pipe line. (white colour, 50 mm thick, two halves pipe section) c) binding the chicken mesh over the thermocole pipe section (gi wire mesh ¾ x 24 swg) d) applying the second coat bituminous over the chicken mesh. e) plastering the pipe section of 25 mm thickness f) wrapping with tarfelt over the plastering pipe g) applying the bituminous final coat over the tarfelt. h) air releasing in the new pie line and commissioning satisfactorily