tender for sale and disposal of unserviceable and condemned scrap materials at anna science centre-planetarium, tiruchirappalli , sale and disposal of unserviceable, obsolete and condemned scrap materials at anna science centre-planetarium, tiruchirappalli , aluminium scrap: (aluminium & glass door, aluminium channel, wires and beading) , iron / mild steel scrap: (steps handrails m.s. and s.s - 6 nos., concrete ms rod - 6 nos., 1½ inch ms pipe, 2 inch ms pipe, old planetarium m.s chair, m s things, gi pipe, ms tin, ms box, ms stand, tube light patti - 22 nos.) , plastic scrap: (damaged plastic chairs - 100 nos.) , wooden scrap/furniture: (old exhibits, plywood sheet & wooden frame) , electrical & electronics scrap: (ss tank (water heater), cpus - 5 nos., old monitors - 5 nos., old tvs - 5 nos., exhaust fans - 5 nos., amplifiers - 2 nos., street lights - 3 nos., 3 hp bore motor - 1 no., 1½ hp sump motor - 1 no., fan heads - 6 nos., & old planetarium things and other e-waste materials) , air conditioning units: (condemned and unserviceable old ac outdoor unit - 20 nos.) , glass scrap: (exhibit glasses) , gst (serial no. 1.04 - 1.07)