bids are invited for 3000021386 refractory materials 1 1300000685 ceramic fibre blanket htz 1425 128kg / m3 size 7620x610x25mm 2 1300000631 fire bricks size 230 x 114 x 64 mm 3 1300038928 ceramic fibre blanket, 1260 deg. c, density 128kg / m3, size 7620 x 610 x 25mm 4 1300039788 std paper, 1260 deg c, 1000 x 1000 x 3mm thk. 5 1000119469 ceramic fiber paper, 6 mm thk, 1425 deg c 6 1300000384 potassium silicate powder for mortar 7 1300000486 insulating castable - insulyte 9hs ( white with silver spots ) 8 1300000735 acid resistant bricks size 230x115x75, al2o3-20%min, fe2o3-2.5%max, apparent porosity-20%, max h2o absorption -8.5% 9 1300000476 insulyte 7 castable 10 1000171869 ceramic fibre board, density - 320kg / m3 , 1425 grade , 0.5mx1mx50mm 11 1000171870 ceramic fibre board- 320kg / m3 , 1425 grade, 0.5mx1mx75mm 12 1300000475 insulyte 8 ( s )