tender for procurement of bag filters for ahp of unit-1 to 4 at sgtps, mppgcl, birsinghpur. , filters (100% nomex) stitched with three rows nomex thread bottom closed with fabric disc & top with stainless steel snap made from nomex needle felt singed and calendared on outer side with fabric as per following specification:- fabric - 100% nomex non woven needle felt. weight - 600 gms per sq. mtr. air permeability (lit. /dm2. min@200pa) - 120 ltr. design pressure - 6-7 kg/cm2, vacuum - 760 mm hg size:- bag length - 88 (2235 mm) i.d. - 147.5 mm, o.d. - 152.0 mm resistance to temperature:- continuous - (180-200) drg. c peaks - 235 deg. c maximum change in dimensions at 200 deg. c (%) 1% material composition web - m-aramide, scrim - m-aramide, thickness - 2.7mm density - 0.22gm/m3 bursting strength - (32 kg/cm2 minimum) tensile strength, length (dan) - 40, cross (dan) - 88 elongation at break length (%) - 23%, cross (%) - 37%, surface design treatment- heat set singed face side .