tender for procurement of fibre blanket & lrb mattress which to be used during unit-4 overhauling,sgtpp , procurement of fibre blanket & lrb mattress which to be used during unit-4 overhauling,sgtpp , lrb mattress, size-1220x1640x50mm density:100 kg/cu.mtr, confirming to is:8183, one side gi hex.wire netting of 24 swgx3/4 inch mesh , mattress,lrb,1220x1640x50mm,w/gi net for boiler & duct is:8183, density- 160 kg/m3, one side gi hex wire netting of 24 swg x 3/4 inch mesh , ceramic fibre blanket from long spun fibres.these can withstand continuous exposure up to 1260c,the size of material shall be 7300 mm x610 mm x25 mm,min density 128kg/m3 without binder,confirming to is code 15402