Tender For corrigendum : supply of insulation material for boiler unit no. 3, 4 & 5 at gandhinagar tps. , lrb mattresses with one side g. i. wire netting of1/2 inch. x 22 swg confirming to is 8183 , lrb rockwool mattresses with standard gi wire netting of 3/4" inch x 24 swg hexagonal mesh