a) unit rate & total rate for MS schedule 80 pipes :- 4" Dia, 120'- 3" Dia , 240'- 2.5" Dia, 240'- 2" Dia, 240'- 1" Dia, 240'b) rate of some MS - C- channles, 360 pcs. & MS fittingsit would be nice if you pls, quote for the above including sea freight cost up to chittagong sea port, bangladesh