The British Metal Tubes & Fittings Association (BMTFA) represents manufacturers of a wide variety of metal tubes and fittings.  This section identifies different grades of material for tubes, and different fitting types. It looks at application, suitability, and standards (both current and legacy) that are commonly used in the building services environment.  The ultimate aim is to ensure that the correct tube and fittings are utilised for the correct application so that longevity of the combined system is ensured.