procurement of materials and maintenance of hot line and different section office for kurseong town main feeder line under kurseong division phed, gta. , supplying hdpe (materials grade pe-100) pipes conforming to is 4984-1995 with latest revision & amendments if any with necessary hdpe specials including labour charges for earth work in excavation in any kind of soil including mixed soil with boulder,road sub-grade and aits flank but excluding moorum laterite or sand stone / hard rock cutting with chisel required including cutting road flank/ brick pavement etc. without damaging the exisiting telephone/electrical cable line etc.(in case of damage of any type of cable line by the agency at the time of execution necessary damage charge as applicable by the respective authority will have to be brone by the agency at his own cost)upto the depth (av.) so as to maintain l.lom.earth cushion from top of the pipe upto g.l. including loading unloading carrying lowering.a)125mm dia. (o.d.) (pn - 6.0 / pe 100) , b) 110mm dia. (o.d.) (pn - 6.0 / pe 100) , supply of g.i. specialsa) plain socket 100 mm dia , 80 mm dia , 50 mm dia , 40 mm dia , 25 mm dia , b) union socket 50 mm dia , 40 mm dia , c) flange (with holes) 100 mm dia , 80 mm dia , 50 mm dia , d) bend (all degree)100 mm dia , 80 mm dia , 50 mm dia , 40 mm dia , e) nipple 100 mm dia (100 mm long) , 80 mm dia (300 mm long) , 80 mm dia (150 mm long) , 80 mm dia (100 mm long) , supply of other materials & disinfectants a) rubber sheet , b) jute , c) nut & bolt , d) g. i wire , e) alum , bleaching powder (in 25 kg bag) , iron hammer (5 kg) , seven nos of source cleaning from 8 th mile to kharay , five nos of source cleaning from babu khola & dharay khola to fiter house (dowhill reservior) , haksaw blade , f.w. valve (gun metal)80 mm dia , 40 mm dia , 25 mm dia , 20 mm dia , 15 mm dia , supply of tools for 9 nos section office & ktwss600 mm long pipe wrench , 450 mm long pipe wrench , 300 mm long pipe wrench , 100 mm chain wrench , 80 mm chain wrench , catchment die set. 150 mm dia to 80 mm dia , catchment die set. 50 mm dia to 25 mm dia. , catchment die set. 15 mm dia to 25 mm dia.