tender for competitivee-bidding for supply of boiler refractory for various sks chini mills ltd, nanpara-bahraich for the season 2025-26 - super heat duty constable refractoryas per specification given blowal-2 03 above 45 % service temp. minimum 14000c bd 2.5/cm2 ccs minimum kg. /cm2 after 24 hrs. casting & dreaded 24 hrs. 110oc. 3 fire clay mortar as per specification al-2 03 above 45% 4 fire cement dry (fire clay) (mortars) packed in 50 kgs. bags acc make alumina above 45% 5 fire cement liquid 6 special fire bricks as per specificational-2,03 ,minimum 30.4 ap % max. 25% pcr minimum 320 ortem . ccs kegs. /cm2 350 delta minimum 1400oc ficar 3 minimum 1.5 at 1400oc for 5 hrs. temp. tolerance + 2% or + 1m whichever is greater as per factory drawing. 7 insulating bricks/calcium silicate block bricks as per is-2042 ap minimum 65% ccs minimum 15 kgs. /cm2 bcs (ortem cones) minimum 27, picar for 2% hrs. at 1250oc service temp. minimum 1250oc size tolerance minimum ± 2% or ± 1m whichever is greater. as per drg. no. sksm/188/97fig. d type 8 insulating bricks/calcium silicate block bricks as per is-2042 ap minimum 65% ccs minimum 15 kgs. /cm2 bcs (ortem cones) minimum 27, picar for 2% hrs. at 1250oc service temp. minimum 1250oc size tolerance minimum ± 2% or ± 1m whichever is greater.as per drg. no. sksm/145/93 fig. b 9 standard fire bricks above 45% al-2,o3 alumina asper drg. no. sksm/222/99a type 10 standard fire bricks above 45% al-2,o3 alumina asper drg. no. sksm/222/99b type 11 standard fire bricks above 45% al-2,o3 alumina asper drg. no. sksm/222/99c type