providing of various mechanical services for maintenance activities in western suburb area under aeww(m)ws/north’s section. - 1 r3-he-2-12: fieldweldinginallpositionwith requirednumber of runs, for m.s. pipes internally and/or externallyincluding gauzing wherever necessary,fixingappurtenancesandother accessories in connection of pipe laying workasper specificationetc completeas specifiedandasdirectedby engineer in charge. 2 r3-he-2-12-e: 8 mm plate thickness 3 r3-he-2-12-f: 10 mm plate thickness 4 r3-he-2-14: gas cutting (either square cut or v cut) pipes, plates etc. complete as specified and as directed by engineer in charge. of following thickness 5 r3-he-2-14-b: above 5 mm up to 10 mm 6 r3-he-2-7: fabricating ,supplying & transporting m.s. material of required thickness suitable for lead joint / mechanical joints to any municipal chowky or site of work, minor fixtures such as manhole frame & covers, pressure and non-pressure type blank flanges, loose flanges, rings, saddle pieces, small pieces to form saddle pieces, collars, clamp collars, bends / tees of various sizes with or without suitable sockets / flanges, small pieces of pipes with or without suitable sockets / flanges, end caps, ladders, platforms, stiffener rings etc. payment will be made as per actual weight of material. 7 r3-he-4-4: making connection on live ci/di water main of various sizes,including cutting of pipes with cutting machine, providing & fixing di pipe upto 1 m. length, specials such as tees, bends,distance pieces, flanges, collars etc. (suitable for lead joint),jointing the pipes with lead joint and pumping out body water etc complete in all respect as directed by engineer in charge.note : (1) the required excavation, shoring, encasement incement concrete & sluice valve will be paid separately under relevant items. note : (2) rebate for salvation cost of old pipe has been considered and old pipes shall be removed by the contractors as directed 8 r3-he-4-4-c: 450x450 9 r3-he-4-4-f: 600x600 10 r3-he-4-5: making connection on live ms water main of various sizes, including cost of cutting, supplying, loading, transporting on site, unloading, lowering in trenches, assembling of required ms specials, ms pipe and jointing the pipes / specials etc. with butt and lap welding joint, removing body water etc complete in all respect as directed by engineer in charge. for following sizes.note : (1) the required excavation, shoring, encasement in cement concrete & supply and fixing of sluice valve will be paid separately under relevant item.