tender for supply of straight tubes & bends for pressure parts in unit iv & v , supply of straight tubes & bends for pressure parts in unit iv & v with all dimension and material as per the drawing enclosed , straight tube of size od 63.5 x 5.5 mm thick sa 210 gr c , straight tube of size od 44.5 mm x 4.5 mm thick sa 210 gr c , straight tube of size od 44.5 mm x 4.5 mm thick sa 213 t11 , straight tube of size od 168.3 mm x 7.11 mm thick sa 106gr.b , 140 degree bend dia 44x 4.5 thick sa 210 gr.c , ltsh coil inlet stub bend no.2 size: 44.5 x 4.5 mm sa 210 gr.c , ltsh coil 180 degree bend carbon steel sa 210 gr. c circuit no.1 , ltsh coil 180 degree bend carbon steel sa 210 gr. c circuit no.2 , ltsh coil 180 degree bend carbon steel sa 210 gr. c circuit no.4 , ltsh coil 180 degree bend alloy steel sa 213 t 11 circuit no.1 , ltsh coil 180 degree bend alloy steel sa 213 t 11 circuit no.2 , ltsh coil 180 degree bend alloy steel sa 213 t 11 circuit no.4 , economizer 90 degree 44.5 x 5 mm thick, sa 210 gr. c