Tender For corrigendum : supply of " sheet, rubberinsertion, wd: 1m, thk: 3mm tolerance: + /-. 05 as per is-11149 of 1984, type-ii, class 2b, har , " sheet, rubberinsertion, wd: 1m, thk: 1.6mm tolerance: + /-. 05mm as per is -11149 of 1984, type-ii, class-2