tender for sale and disposal of unserviceable and condemned scrap materials at tamilnadu science and technology centre, chennai , sale and disposal of unserviceable, obsolete and condemned scrap materials at tamilnadu science and technology centre, chennai , aluminium scrap: condemned and unserviceable aluminium sections, sheets, channels, frames, angles and other aluminium materials available in scrap condition , iron/steel scrap: condemned and unserviceable iron and steel structural items, ms angles, channels, plates, pipes, rods and other ferrous scrap materials , plastic scrap: damaged and unserviceable plastic items including plastic bins, containers, crates, chairs and other plastic materials , wooden scrap/furniture: old, damaged and condemned wooden furniture, tables, chairs, cupboards, wooden structures and miscellaneous wooden scrap materials , electrical & electronics scrap: obsolete electrical and electronic components, wiring, switches, cables, defective electronic circuit kits, unserviceable cpus, monitors, ups units, printers, condemned electrical transformers and other e-waste materials , air conditioning units: condemned and unserviceable air conditioners, compressors, indoor/outdoor units, copper piping and related accessories. , condemned machinery: condemned and unserviceable machinery, machine parts, equipment and accessories declared beyond economical repair , gst