supply of rubber belting 850mm width, 4 ply 12 mm [rubber belting 850mm width, 4 ply 12 mm thick 4 mm top rubber, 3 mm bottom rubber, for operating at 150 degree centigrade in single length 50 meters. confirming to grade t-2 of is-1891 part-2.]rubber belting 850mm width, 4 ply 12 mm [rubber belting 850mm width, 4 ply 12 mm thick 4 mm top rubber, 3 mm bottom rubber, for operating at 150 degree centigrade in single length 50 meters. confirming to grade t-2 of is-1891 part-2.],rubber belting 850mm width, 4 ply 12 mm thick 4 mm top rubber, 3 mm botto m rubber, for operating at 150 degree centigrade in single length 50 meters. confirmin g to grade t-2 of is-1891 part-2. ]