supply of pipes at iocl guwahati refinery supply of pipes at iocl guwahati refinery , list of item ( s ) / work ( s ) as per tender documents , pipe, cs, smls, a106, grb, pe, 3 / 4in, 160 , pipe, cs, smls, a106, grb, pe, 1in, 80, xs , pipe, cs, smls, a106, grb, pe, 1 1 / 2in, 80, xs , pipe, cs, smls, a106, grb, be, 3in, 40 , pipe, cs, smls, a106, grb, be, 4, std , pipe, cs, smls, a106, grb, be, 8in, 40 , pipe, cs, smls, a106, grb, be, 12in, std , pipe, cs, smls, a106, grb, pe, 1 / 2in, 160, ibr , pipe, cs, smls, a106, grb, pe, 3 / 4in, 160, ibr , pipe, cs, smls, a106, grb, pe, 1in, 80, xs, ibr , pipe, cs, smls, a106, grb, pe, 1.5in, 80, xs, ibr , pipe, cs, smls, a106, grb, be, 2in, 80, xs, ibr , pipe, cs, smls, a106, grb, be, 3in, 40, std, ibr , pipe, cs, smls, a106, grb, be, 4in, 40, std, ibr , pipe, cs, smls, a106, grb, be, 6in, 40, std, ibr