procurement of filter bags and supporting cages for buffer hoppers and ash silos and venturi for ahp , filter bags for buffer hoppers type : collar model : tkr – 81-250 material density : 560 gsm (+)10% grm/m2 media : nomex (100 % m-aramide) bag type: -non woves needle felt (yellowish cream) : imported from italy/germany finish : singed & celendend finish size : ? 149 mm x length 2480 mm thickness –2.0 mm (+) 10% tensile strength sample size (200mmx50mm):- machine direction- 60 kgs (minimum), cross direction- 65 kgs (minimum), bursting strength- 25 kg (minimum) elongation at break(%):- lengthwise- 25%, cross wise- 25%. all bags should be stitched using ptfe thread. filter bags from each production batch shall be tested for the following properties by the manufacturer prior to dispatch 1) type of polymer: test method astm d276 2) weight: test method astm d 6242 3) thickness: test method astm d 5729 4) air permeability: test method astm d 737 5) tensile (machine direction & cross direction) and elongation at break (lengthwise & crosswise): test method astm d 5035/is 1969 6) bursting strength: test method astm d 3786/is 1966 7) dimensional, finish & treatment on each filter bag. , filter bags for ash silos type : collar material density: 560 gsm (+)10% grm/m2 media : nomex (100 % m-aramide) bag type: -non woves needle felt (yellowish cream) : imported from italy/germany finish : singed & celendend finish size :- ø 149mm x length 3600 mm - thickness –2.0 mm (+) 10% tensile strength sample size (200mmx50mm):- machine direction- 60 kgs (minimum), cross direction- 65 kgs (minimum), bursting strength- 25 kg (minimum) elongation at break(%):- lengthwise- 25%, cross wise- 25%. all bags should be stitched using ptfe thread. filter bags from each production batch shall be tested for the following properties by the manufacturer prior to dispatch 1) type of polymer: test method astm d276 2) weight: test method astm d 6242 3) thickness: test method astm d 5729 4) air permeability: test method astm d 737 5) tensile (machine direction & cross direction) and elongation at break (lengthwise & crosswise): test method astm d 5035/is 1969 6) bursting strength: test method astm d 3786/is 1966 7) dimensional, finish & treatment on each filter bag. , supporting cage for filter bags of buffer hoppers model - tkr. 81-250 type collar type (suitable for filter bags for buffer hoppers type ; collar material density 500 grm/m2 media:-nomex (m- aramide) bag type:- non woves needle felt (yellowish cream) size:- ? 149 mm x length 2480mm thickness- 1.8 mm- 2.0 mm having thickness of 1.8mmmin. at collar & cup) cage material : g.i wires of ? 4mm with 15nos of vertical wires having 100mm ring spacing on upper half & 150mm in lower half portion and cage should be adequately welded specially at collar & cup portion collar diameter-173 mm & cylindrical depth at collar is 32 mm min. , supporting cage for filter bags of buffer hoppers model - tkr. 144-360 type collar type (suitable for filter bags for ash silos type : collar model: tkr-144-360 material density 500 grm/m2 media:-nomex non woves needle felt (yellowish cream) imported from italy finish : singed & celendend finish size:- ? 149 mm x length 3600mm,thickness- 1.8 mm- 2.0 mm having thickness of 1.8mmmin. at collar & cup) cage material : g.i wires of ? 4mm with 15nos of vertical wires having 100mm ring spacing on upper half & 150mm in lower half portion and cage should be adequately welded specially at collar & cup portion collar diameter-173 mm & cylindrical depth at collar is 32 mm min. , venturi for bag filter (model -tkr-81-250) moc-cast iron