NF F50-012:1986 Railway fixed equipment. Sawing and drilling of flat-bottom rails of types superior or equal to 26 kg/M, of 60 G, 70 G grooved rails and their fischplates.
1986NF F50-012:1986 Railway fixed equipment. Sawing and drilling of flat-bottom rails of types superior or equal to 26 kg/M, of 60 G, 70 G grooved rails and their fischplates.