bids are invited for cable tray support system -boltable- single channel ( sc-1 ) , double channel ( dc-1 ) , cantilever arm each complete with ( 1 ) 2 nos.-m12 hex. bolt & washer, ( 2 ) 2 nos.-m12 spring nuts, ( 3 ) 2 nos.-m6 pan head screws a washer, ( 4 ) 2 nos.-m6 spring nuts, for 600mm wide trays ( 650mm ) for 450mm wide trays ( 500mm ) for 300mm wide trays ( 350mm ) , for 150mm wide trays ( 200mm ) , clamps and fittings complete with required hardwars ( spring nuts / washers etc. as required for complete installation ) , clamp ( cc2 ) , beam clamps ( bc1 ) 90 degree angle fitting ( la1 ) 90 degree angle fitting ( hl1 ) , flat plate straight fitting tray fixing clamp-tc1 total quantity : 95115