Descriptors | Thickness, Central heating, Steels, Radiators, Marking, Thermal output, Aluminium alloys, Dimensions, Leak tests, Heaters, Pressure testing, Cast-iron, Convection heaters, Hot-water central heating, Paints, Tubular shape, Space-heating systems, Strength of materials, Protective coatings, Performance, Type testing, Steam central heating, Performance testing |