tender for fabrication and erection of boiler tubes for the season 2025-26 - dismantling of leaky/week 63.50mm od x 3.66mm thick drum to drum rear bank tubes of m/s backau wolf make 30tph capacity boiler no 4, fabrication of new tube from provided tubes, fitting & erection of new tubes and expending of tubes at both end in both drums upto making of well mouth and hydraulic testing of boiler at standerd pressure (315 nos) 3 replacment of weak/leaky sch-40 steam lines/boiler feed water lines as per ibr norms.(i) 65mm per mtr 4 ………..do………...(ii) 80mm per mtr 5 …………….do………. (ii) 100mm per mtr 6 ………….do……….(iv) 150mm per mtr 7 dismantling og 76.20mm od leaky/weak steam drum to front header roof tubes of m/s i.j.t. make 20 tph capacity boiler no2 fabrication of new tubes out of provided material as per sample/drawing, fitting and erection of new tubes complete in all respect and finally satisfactroy leak proof hydraulic testing at standard pressure(25 nos) 8 fabraication of 101.60mm od x 4.06mm thick x 5000mm long fins/gilled type economizer tubes, complete in all respect as per sample/drawing. (24 nos) 9 dismantling, fitting and erection of weak/leaky bends of boiler mounting and satisfactory hydraulic testing at standard pressure(i) 20mm 10 ……..do….. 25mm 11 …….do……38.1 mm 12 …….do……44.45 mm 13 …….do……50.80 mm 14 …….do……65.00 mm 15 …….do……80mm 16 …….do……100mm 17 …….do……150mm 18 …….do…….200mm 19 supply of carbon steel seam less steam line bends astm a-106 grade in sch-40 with ibr test certificate(i)20mm 20 ……..do….. 25mm 21 …….do…..38.1mm 22 ……..do……44.45mm 23 ……..do……50.80mm 24 ……..do…….65mm 25 ……..do……80mm 26 ……..do……100mm 27 …….do……150mm 28 supply of carbon steel seam less steam pipe line nipple astm a-106 grade sch-40(i) 38.1mm 29 ……….do…….44.45mm 30 ……..do………70mm 31 ……..do…….76.20mm 32 dismantling fitting and erection of weak/leaky steam pipe line in sch-40 of boiler and turbines in following size(i) 65mm 33 ……….do………80mm nb 34 ………do……….100mm nb 35 ………do……….150mm nb 36 dismantling of leaky/week 76.20mm od x 4.06mm thick side wall header (l+r) tubes of m/s backau wolf make 30tph capacity boiler no 4, fabrication of new tube out of provided material, as per sample/drawing,fitting & erection as per ibr norms and finally leak proof hydraulic testing at desired pressure 37 dismentaling of leak/weak 63.50mm od x 2.64mm thick x 3100mm long air heater tubes of m/s i.j.t. make 20 tph capacity boiler no 1 & 2 making of tube out of provided old boiler tubes and fitting of tubes in air heaters and expanding at both ends and leak proof testing of air heater calendria 38 dismantling og leak/weak 63.50mm od x 2.64mm thick x 5100mm long air heater tubes of m/s backau wolf make 30 tph capacity boiler no 4 cleaning of holes in both tube plates, making of tubes out of old boiler tubes/new tubes and fitting & erection and expending at both ends and leak proof testing of air heater caludria 39 dismantling of complete old economiser tubes of 101.60mm od x5000mm long (fins type) by opening both ends bends, taking down to ground floor of all tubes, cleaning of tubes, hydraulic testing of tubes and no re-fitting of complete economiser at side, fitting of both end bends, & hydraulic testing of complete economiser at desired pressure