tender for tube replacement work of boiler - dismentaling fabrication & errection of screen tube of boiler no.2 (becaulf make) capacity 20 ton/hr with hydraulic testing at desired pressure of boiler no. 2 size 76.2mm od 3.66m thick 26 no. & 70.00 mm od thick 3.66mm 25 nos 3 dismentaling fabrication & errection of economizer tubeof boiler no. 2 (becaulf make) capicity 20 ton/hr with hydraulic testing at desired pressure size 101.00 od x 4.06 mm x 5200 mm long 24 no. 4 dismentaling replacement of bends(witht-22 meterial)& errection of super heater coil with hydraulic testing at desired pressure of boiler no. 3 (thermax make) capicity 32 ton/hr pressure 32 kg/cm2 15 no. 5 dismentaling replacement of bends(without t-22 meterial)& errection of super heater coil with hydrolic testing at desired pressure of boiler no. 3 (thermax make) capicity 32 ton/hr pressure 32 kg/cm2 15 no. 6 dismentaling febrication & replacement of screen tube 63.5mm od x 4.06 mm thick with hydrauli at desired pressure of boiler no. 3 thermax make. capicity 32 ton/hr pressure 32 kg/cm2 59 no 7 dismentaling febrication & replacement of drum to drum tube 63.5mm od x 4.06 mm thick with hydrauli at desired pressure of boiler no. 3 thermax make. capicity 32 ton/hr pressure 32 kg/cm2 372 no