tender for boiler tube replacement other relevent jobs coil type economizer- 1 dismantling, fabrication & erection / replacement of old, weak, worn out tubes as per our drg. / sample including ss support for maintain the gap with hydraulic at desire pressure for texmaco boiler no.1 up 3644 & boiler no.2 up3645, 20 ton / hr capacity as per our drawing no. blr-41 :- 2 a ) 44.45 mm od super heater coil 3 b ) 63.5mm od drum to drum tube 4 c ) 76.2 mm od boiler tube as per details:- 5 1. drum to drum tube 6 2. drum to drum screen tube 7 3. riser tubes ( mud drum tube to front header ) 8 4. side wall tubes / front bank tube ( header to header ) 9 5. roof tubes ( steam drum to front header ) 10 6. relief tube ( steam drum to side wall header ) 11 7. soot blowing elecment 3 nos each boiler with material 12 dismantling, fabrication & erection of old weak / worn out tubes &super heater coils of lipi boiler no. up-4045, 20 ton capacity as per our drg. no. blr-68, blr-90 :- 13 a ) drum tube size 50.8 mm x 3.66 14 b ) drum tube size 63.5 mm x 3.66 15 c ) super heater coil 44.5 mm x 3.66 x 43.5 m 16 dismantling, fabrication & erection of boiler feed water / steam line with supports as per ibr norms 17 welding joint of various type boiler tubes / pipe :- 18 a ) size 2 nb 19 b ) size 3 nb 20 b ) size 4 nb 21 c ) size 6 nb 22 d ) 63.5 mm od 23 e ) 76.2 mm od 24 dismantling, fabrication & erection ofdifferent size pipe line bend of boiler. 25 dismantling, fabrication & erection ofdifferent size pipe line flange of boiler. 26 reclaimation of 63.5 mm od drum to drum tube for texmaco make boiler pressure 21 kg / cm2, cap- 20 tphthe work includes dismantling of old tube, fabrication of new bends form new tube with welding at both end after that fiting of tubes including expend in drum with hydraulic testing at desire pressure. 27 installation of new designes coil type economizerhaving heating surface ( 90 m2 ) for lipi make boiler. including material as per boiler designepressure is 20 tph, wp 21 kg / cm2, temp. 3200 ± 200 28 supply of new air heater tube plate :- 29 a ) size 20 mm and 10 mm withdismantling and machining new designed zig zag type. 30 b ) dismantling & erection ofabove air heater tube plate. 31 c ) dismantling & erection of new air heater tube with expending. 32 d ) shifting of air heater with caseing and ducting foer new connection. 33 chief engineer