custom bid for services - item code 1022151 as per boq da61402 column openingcleaning boxup in gem , custom bid for services - item code 1022180 as per boq da61402 valve trays repairtesting in gem , custom bid for services - item code 1022159 as per boq da61402 chimney trays repairtesting in gem l , custom bid for services - item code 1022275 as per boq da61402 demister pad removalrefixing in gem l , custom bid for services - item code 1022152 as per boq da61403 column openingcleaning boxup in gem , custom bid for services - item code 1022276 as per boq da61403 demister pad removalrefixing in gem , custom bid for services - item code 1027298 as per boq buffingsander or buffingsander in gem