procurement of for buffer hoppers at ahp 2x600 mw, sstpp, mppgcl, dongalia on open offer basis , s for buffer hoppermaterial of construction- nomex-550 gm/ mt sq. , aramid fibre, size- 160 x 2000 mm ,fibre composition- polyaramide, weight-550 gm/ mt sq. , density-0.29 gm/ mt cube, air permeability-150l/d mtsq/ min, wrap strength, - 800 n/5x20 cm ,weft strenfth- 1000 n/n 5x20 cm, wrap tensile elongation-35 %, weft tensile elongation-45 %, working temperature-204 deg centigrade, short working temperature- 250 deg centigrade, anti-acid- good anti alkali- excellent, surface treatment- singeing, calandering and heat setting. hsn code:59119090