HAT offer both anodizing and powered coating as a daily service, specific details can be seen below.

Anodising
Anodising is an electrolytic process that produces a dense, chemically stable protective aluminium oxide film that is an integral part of the underlying aluminium - it cannot peel or flake off. Most films produced by anodising are translucent and so show the silvery look of the aluminium but various colours are achievable by a variety of anodising process variations. The main type of anodising process used for general purposes is based on a sulphuric acid electrolyte, producing an ideal combination of decorative and protective properties. The sealing of the anodic film in boiling water after anodising is an important part of the surface treatment. Rolled, extruded, drawn, cast and forged aluminium products can all be anodised. There are marked differences in the results however, and not all alloys are recommended for this treatment. For instance, aluminium-silicon alloys present a natural grey anodic coating whereas, by choosing a special bright trim alloy, a highly reflective "mirror-like" finish is attainable. Various standard thicknesses of anodic film are available which are relevant to various applications. Thicknesses can vary from 5 microns to 25 microns. The choice of grade depends upon the application. 25 microns should be specified for most exterior applications whilst 10 microns and 15 microns are generally used for interior applications. For decorative trim applications a thickness of 5 microns is often used.

Hard anodising produces thick, abrasion resistant films. Using a low temperature electrolyte, films of up to 125 microns can be produced.

Some of the very diverse uses for anodised aluminium include: electronic components; furniture; kitchen trim; lighting systems; yacht masts; windows; curtain walling; balustrading; nameplates; handles and aircraft parts.

The British Standards concerned with anodising are BS 3987 (architectural anodising), BS 5599 (hard anodising), and most importantly BS EN 12373 in 19 parts.

Organic Coating
Paint coatings can be applied in a number of ways but, in all of them, it is essential that the aluminium is pre-treated property. The most common methods of paint application are wet spray, electrophoretic and powder coating. The electrophoretic technique enables very sound uniform coatings to be achieved, but due to the size of the paint bath and the quantity of paint required it is not economic to change the paint colour continually. As a result white and bronze are the only colours normally available. Polyester powder coatings electrostatically applied also provide sound durable coatings in a wide range of colours. The final stage of the coating processes is to thermally cure the coating under closely controlled conditions. This curing ensures the complete bond between the paint and the underlying metal.

Coated aluminium is specified in many industries. In building it is used for exterior or interior applications. Polyester powder coatings are a minimum of 40 microns thick, compared with the thickness of 25 microns normally applied by electrophoresis. Powder coatings are available in a wide range of colours. There are two British Standards which relate to organic coatings on architectural aluminium namely, BS 4842 - liquid organic coatings and BS 6496 - powder organic coatings.