procurements of various boiler pressure parts items like sliding spacers, dissimilar welds and orifice complete assembly tube, orifice plate and orifice and header bends used in different zones of the boiler furnace in the boilers of 2x660 mw, sstpp , dissimilar welds , secondary superheater [ moc- ( sa 213 t22 ) ( cc2328-2 ) , od-45 mm, thickness- 9.9mm, length- 150 mm , secondary superheater [ moc- ( sa 213 t12 ) , od-31.8 mm, thickness- 5.9 mm, length- 100 mm ] [ moc ( cc2328-2 ) , od-45 mm, thickness- 5.9 mm, length- 200 mm ] , secondary superheater [ moc- ( sa 213 t91 ) , od-45 mm, thickness- 9.9 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-45 mm, thickness- 9.9 mm, length- 150 mm ] , tertiary superheater [ moc- ( sa 213 t91 ) , od-45 mm, thickness- 8.9 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-45 mm, thickness- 8.9 mm, length- 150 mm ] , tertiary superheater [ moc- ( sa 213 t91 ) , od-45 mm, thickness- 6.4 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-45 mm, thickness- 6.4 mm, length- 150 mm ] , tertiary superheater [ moc- ( sa 213 t91 ) , od-31.8 mm, thickness- 5.4 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-31.8 mm, thickness- 5.4 mm, length- 150 mm ] , tertiary superheater [ moc- ( sa 213 t91 ) , od-31.8 mm, thickness- 5.9 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-31.8mm, thickness- 5.9 mm, length- 150 mm ] , tertiary superheater [ moc- ( sa 213 t91 ) , od-31.8 mm, thickness- 6.4 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-31.8 mm, thickness- 6.4 mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t12 ) , od-57.1 mm, thickness-4.5 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness- 4.5 mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t12 ) , od-57.1 mm, thickness-10.55 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness- 4.5mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t12 ) , od-57.1 mm, thickness-13 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness- 4.5mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t12 ) , od-57.1 mm, thickness-14 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness- 4.5mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t12 ) , od-57.1 mm, thickness-15.05 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness- 4.5mm, length- 150 mm ] , secondary superheater [ moc- ( sa 213 t91 ) , od-57.1 mm, thickness-6.9 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness-6.9 mm, length- 150 mm ] , primary reheater [ moc- ( sa 213 t22 ) , od-57.1 mm, thickness-4.5 mm, length- 200 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness-4.5 mm, length- 125 mm ] , primary reheater [ moc- ( sa 213 t22 ) , od-57.1 mm, thickness-5.5 mm, length- 150 mm ] [ moc ( cc2328-2 ) , od-57.1 mm, thickness-5.5 mm, length- 150 mm ] , slidingprimary superheater , sliding spacer ( f & m ) moc- sa 351 ch 20 , fixedprimary superheater , sliding spacer stoper ( f & m ) moc- sa 351 ch 20 , sliding spacer primary re-heater , sliding spacer ( f & m ) , moc- sa 351 ch 20 , fixedprimary re-heater , sliding spacer stopper ( f & m ) , moc- sa 351 ch 20 , rear wall hanger tube , sliding hook ( drawing no - n13600-5112-7 & drawing no - n13600-5112-8 ) moc- sa 351 ch 20 , orifice ( hole dia ( mm ) / type ) , 10 / single orifice ( moc-sa210m gr c ) , 11 / single orifice ( moc-sa210m gr c ) , 11.5 / single orifice ( moc-sa210m gr c ) , 12 / single orifice ( moc-sa210m gr c ) , 12.5 / single orifice ( moc-sa210m gr c ) , 13 / single orifice ( moc-sa210m gr c ) , 13.5 / single orifice ( moc-sa210m gr c ) , 15 / single orifice ( moc-sa210m gr c ) , 15.5 / single orifice ( moc-sa210m gr c ) , 18 / single orifice ( moc-sa210m gr c ) , 10 / double orifice ( moc-sa210m gr c ) , 10.5 / double orifice ( moc- sus410 ) , 11 / double orifice ( moc- sus410 ) , 10 / double orifice ( moc- sus410 ) , 10.5 / double orifice ( moc- sus410 ) , 11 / double orifice ( moc- sus410 ) , 10 / double orifice ( moc- sus410 ) , 11 / single orifice ( moc- sus410 ) , 18 / single orifice ( moc- sus410 ) , 10 / double orifice ( moc- sus410 ) , 10.5 / double orifice ( moc- sus410 ) , 11 / double orifice ( moc- sus410 ) , 10 / double orifice ( moc-sa 240m 304 ) , 10.5 / double orifice ( moc -sa 210 m gr c ) , 11 / double orifice ( moc -sa 210 m gr c ) , 10 / double orifice ( moc -sa 240 m 304 ) , 12 / single orifice ( moc- sus 410 ) , 15 / single orifice ( moc- sus 410 ) , 13 / single orifice ( moc- sus 410 ) , primary superheater inlet header bend ( moc- sa-213 t12 ) outer dia-45 mm, thickness-6.9 mm ) , bend angle- 5.18 , bend angle- 7.5 , bend angle- 12.46 , bend angle- 15.35 , bend angle- 21 , bend angle- 25 , bend angle- 28.56 , bend angle- 35 , bend angle- 45.78 , bend angle- 50 , bend angle- 90 , primary re-heater inlet header bend ( moc-sa-213 t12 ) outer dia-57.10mm, thickness-3.5 mm ) , bend angle - 5.47 , bend angle - 8.03 , bend angle - 9.35 , bend angle - 10.85 , bend angle - 12.14 , bend angle - 16.19 , bend angle - 19.32 , bend angle - 20.93 , bend angle - 22.50 , bend angle - 27.46 , bend angle - 28.88 , bend angle - 35.67 , bend angle - 45.0 , bend angle - 67.5 , bend angle - 90 , primary re-heater outlet header bend ( moc-sa213 t22 ) outer dia- 63.5mm, thickness- 11.09mm , bend angle- 11.03 , bend angle- 12.54 , bend angle- 23.99 , bend angle- 30 , bend angle- 33.72 , bend angle- 45 , bend angle- 47.3 , bend angle- 46.17 , bend angle- 50.75 , bend angle- 54.75 , bend angle- 57.7 , bend angle- 60 , bend angle- 62.42 , bend angle- 66.98 , bend angle- 75 , bend angle- 90 , bend angle- 91.17 , bend angle- 105 , furnace inlet header consol ( moc-sa213 t12 ) outer dia- 28.6 mm, thickness- 4.60 mm , bend angle- 30 , bend angle- 52.5 , bend angle- 75 , bend angle- 90 , bend angle- 97.5 , furnace outlet header consol ( moc-sa213 t12 ) outer dia- 28.6 mm, thickness- 4.60 mm , bend angle- 6.15 , bend angle- 12.15 , bend angle- 17.9 , bend angle- 19.19 , bend angle- 22.65 , bend angle- 23.3 , bend angle- 28.3 , bend angle- 34 , bend angle- 37.01 , bend angle- 40.75 , bend angle- 44.1 , bend angle- 47.12 , bend angle- 68.14 , bend angle- 90 , bend angle- 7.92 , bend angle- 17 , bend angle- 34.81 , furnace front wall outlet header ( moc-sa213 t12 ) outer dia- 28.6 mm, thickness- 4.60 mm , bend angle- 26.47 , bend angle- 45 , bend angle- 90 , furnace rear outlet header ( moc-sa213 t12 ) outer dia- 28.6 mm, thickness- 4.60 mm , bend angle- 45.9 , bend angle -90 , bend angle -105.9 , furnace side wall outlet header ( moc-sa213 t12 ) outer dia- 28.6 mm, thickness- 5.60 mm , bend angle -60.2 , bend angle -90 , bend angle - 105.2 , furance inlet header consol ( moc- sa 210 -c ) outer dia- 45 mm, thickness- 6.9mm , bend angle -90 , roof inlet header ( moc-sa213 t12 ) outer dia- 38.1 mm, thickness- 5.9 mm , bend angle -6.28 , bend angle -7.69 , bend angle -10.07 , bend angle -12.54 , bend angle -16.04 , bend angle -19.54 , bend angle -22.9 , bend angle -24.94 , bend angle -28.04 , bend angle -32.72 , bend angle -35.37 , bend angle -41.59 , bend angle -46.8 , bend angle -90 , bend angle -100 , roof outlet header ( moc-sa213 t12 ) outer dia- 57.1 mm, thickness- 8.9 mm , bend angle -49.88 , bend angle -70 , bend angle -78.7 , bend angle -90 , secondary rear wall outlet header ( moc-sa213 t12 ) outer dia- 38.1 mm, thickness- 9.9 mm ) , bend angle -30 , bend angle -63.71 , bend angle -69.06 , bend angle -73.48 , economizer inlet header ( moc- sa 210 gr.c ) outer dia- 45 mm, thickness- 6.40 mm ) , bend angle -16.7 , bend angle -20 , bend angle -50.19 , bend angle -36.14 , bend angle -40 , bend angle -41.99 , bend angle -30.96 , bend angle -60 , bend angle -80 , bend angle -90 , economizer intermediate header consol ( moc- sa 210 gr.c ) outer dia- 45 mm, thickness- 7.9 mm ) , bend angle -24.23 , bend angle -41.28 , bend angle -45.00 , bend angle -90.00 , bend angle -15.95 , bend angle -47.04 , secondary pass front wall outlet header ( moc-sa213 t12 ) outer dia- 45 mm, thickness- 8.4 mm ) , bend angle -98.63 , bend angle -59.39 , economizer outlet header ( moc- sa 210 gr.c ) outer dia- 50.8mm, thickness- 7.9 mm ) , bend angle -30 , secondary pass side wall inlet header ( moc-sa213 t12 ) outer dia- 38.1 mm, thickness- 9.9 mm ) , bend angle -11 , bend angle -15.96 , bend angle -18 , bend angle -20.07 , bend angle -28 , secondary side wall outlet header ( moc-sa213 t12 ) outer dia- 38.1 mm, thickness- 9.9 mm ) , bend angle -35 , bend angle -67.36 , second pass division wall outlet header ( moc-sa213 t12 ) outer dia- 45 mm, thickness- 7.4 mm ) , bend angle -86.65 , bend angle -54.06 , secondary reheater inlet header bends ( moc-sa213 t12 ) , bend angle- 30, outer dia- 57.1 mm, thickness- 4.5 mm , bend angle- 90, outer dia- 57.1 mm, thickness- 4.5 mm , bend angle- 105, outer dia- 45 mm, thickness- 4.5 mm , bend angle- 13.89, outer dia- 45 mm, thickness- 4.5 mm , bend angle- 36.56, outer dia- 45 mm, thickness- 4.5 mm , bend angle- 90, outer dia- 38.1 mm, thickness- 3.5 mm , bend angle- 36.56, outer dia- 38.1 mm, thickness- 3.5 mm , bend angle- 13.89, outer dia- 38.1 mm, thickness- 3.5 mm , bend angle- 75, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 60 & 60.23, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 45, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 15, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 105, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 13.89, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 36.56, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 61.9, outer dia- 38.1 mm, thickness- 4.5 mm , bend angle- 90, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 75, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 60 & 60.15, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 45, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 15, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 13.89, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 61.29, outer dia- 34 mm, thickness- 3.5 mm , bend angle- 36.56, outer dia- 34 mm, thickness- 3.5 mm , secondary reheater outlet header bends ( moc- sa 213 t91 ) ( outer dia- 57.1 mm, thickness- 6.9mm , bend angle- 10.95 , bend angle- 15 , bend angle- 21.15 , bend angle- 30 , bend angle- 37.74 , bend angle- 45 , bend angle- 49.26 , bend angle- 56.69 , bend angle- 58.45 , bend angle- 60 , bend angle- 62.5 , bend angle- 63.45 , bend angle- 66 , bend angle- 68 , bend angle- 70.5 , bend angle- 75 , bend angle- 90 , bend angle- 105