tender for purchase of vacuum filter spares , spares of vacuum filter size-10’x20’ brass zig zag size- 2 ft long , brass divisional strip size-10 ft long , brass solid strips size-12 ft long , s.s nipple size-3 / 4” , s.s bending strips , round head copper rivet size-4x12 mm , round head copper rivet size-5x15 mm , round head copper rivet size-5x18 mm , soft lead , m-seal , araldite ( 1 kg each set ) , s.s welding electrode ( ss-304 ) make- super bond ( s ) / equivalent , cutting wheel size-4” , spare of vacuum filter size-8’x16’ brass zig zag size- 2ft long , brass divisional strip size- 8 ft long , brass solid strip size-12 ft long , s.s nipple size-3 / 4” , s.s bending strip , round head copper rivet size-4x12 mm , round head copper rivet size-5x15 mm , round head copper rivet size-5x18 mm , soft lead , araldite 01 kg each set , m-seal , s.s welding electrode ss-304, make- super bond ( s ) / equivalent , cutting wheel size-4”