... rope for high way guard rail 1) Con.:3x7, 3x19, 4x7, 4x19, 7x19, etc. 2) Diameter: 8-25mm hot dipped galvanized steel ... wire rope for high way guard rail 1) Con.: 3x7, 3x19, 3x19S ... , 4x7, 4x19, 4x19S, 7x19 etc2) Diameter: 8mm--25mm 3) Surface:hot dipped ...