bids are invited for tender for maintenance painting and supply and fixing of nut and bolt at kanpur depot preparation of surface - preparation of surface (manual cleaning/wire brushing etc.) including labour, materials etc , first primer painting - 1 coat of inorganic zinc silicate primer 65 micron per coat , second primer painting - 1 coat of epoxy high build micaceous iron oxide 100 micron per coat , final painting - 2 coats of acrylic aliphatic polyurethane 30 micron per coat , painting of roof of tank - 2 coats of aluminium paint 30 microns percoat , nut and bolt - supply and fixing m16 hexagonal head bolt full thread of length 50 mm along the nut material mild steel total quantity : 17100