procurement of bag filters and cages for silo in ash handling plant at 2x600 mw units at sstpp, mppgcl, dongalia. , bag filters for silo material of construction-100%polyster non-woven needle felt, size-f150x3660mm scrim-100%polyster fabric weight-550gsm ( + / -5%, ) air permeability ( lit / dm² / min.@20mmwc ) -150 ( + / -20% ) , thickness ( mm ) :- 1.8-2, tensile strength: a ) md ( kgf ) -80 ( + / -10% ) b ) cmd ( kgf ) -90 ( + / -10% ) bursting strength ( kg / sq.cm-32 ( + / -10% ) , operating temperature ( °c ) : a ) recommended max.continuous-150, b ) recommended max. surge-170 finish- heat set, cylindered& singed. , cage with venture for filter bag materisl-ss304 size:- inner dia-144mm outer dia.-182mm length- 3650mm ring wire dia.-4mm no. of vertical wires-12 no. of horizontal wire-23