tender for design, manufacturing & supply of economiser coil tubes and bends with supporting arrangements for unit- iii renewal of dislocated / dummied coils. , design, manufacturing & supply of economiser coil tubes and bends with supporting arrangements for unit- iii renewal of dislocated / dummied coils , eco u bend size ø 44.5 x 4.5 mm material :sa 210 gr a1 variant i (as per drawing) , eco u bend size ø 44.5 x 4.5 mm material : sa 210 gr a1 variant ii (as per drawing) , eco tube bend for header end bend (top) size ø 44.5 x 4.5 mm material :sa 210 gr a1 (as per drawing) , economiser straight tube size : ø 44.5 x 4.5mm material : sa 210 gr c (cds) , supporting arrangement for economiser coil covering flat material: sa 387 gr 12 (as per drawing) , supporting arrangement for economiser coil covering main clamp material: sa 387 gr 12 (as per drawing)