[Class : 6] Alloys Of Common Metal, Aluminium , Cast Iron, Unwrought Or Semi Wrought, Cast Steel, Cladding Of Metal For Construction And Building, Elbows Of Metal For Pipes, Flanges Of Metal (Collars), Iron Ores, Iron (Silicon), Oil Wells (Casings Of Metal For ), Ores Of Metals, Pins (Cotter ), Pins For Wheels, Etc Railway Material Of Metal, Steel Alloys, Valves Of Metal (Other Than Part Of Machines), Well Linings Of Metal (Building), Wind Vanes Of Metal, Being Goods Falling In Class 6.