tender for competitive e-bidding for job work of boiler retubing season 2024-25, 1 10 tph capacity boiler no 1( ijt make) 2 dismantling fabrication and erection ofair pre heatertube(size 63.5 mm x 2.64mm thickness x3.25mtr length) with expansion oftube along with satisfactory trail. 3 dismantling fabrication and erection ofeconomizercoil (size 38.1 mm x 3.66mm thickness x 40 mtr. length ) along with expansion oftube along with satisfactoryhydraulic testing (18kg/cm2), spacer andlugs for support of coil will be provided by you. all necessary formalities in accordance to ibr directives(boiler director permission) are to be taken up by fabricator.