purchase of materials for mini mcf supply of materials for mgnregs-pazhayakunnummel gp ( mcf construction ) , requirement list of mini mcf , stone aggregate ( single size ) :40 mm nominal size , stone aggregate ( single size ) :20 mm nominal size , coarse sand ( zone iii ) , portland cement , stone aggregate ( single size ) :10 mm nominal size , steel tubes ( including primer and welding charge ) , precoated galvanized steel plain ridges , mild steel sheet for tanks , mild steel plates , structural steel such as tees, angles, channels and r s joists , pulley 25 mm dia steel tubes ( including primer and welding charge ) , flats upto 10 mm in thickness , mild steelround bar 12 mm dia and below , 200 mm aluminium aldrop , iron hooks and eyes 100 mm , gi trafford sheet 0.35mm thick , bitumin washer , stainless steel screws 50 mm , synthetic enamel paint in black or chocolate shade