Metal Finishing

From a strong base of approved suppliers, metal finishing is an important process in Bespoke Fabrications turnkey offering. Metal finishing can be provided to meet the project’s exacting requirements, for the harshest of conditions and climatic region.

All surface treatments are subject to rigorous quality standards and undergo a full inspection prior to progressing through the manufacturing process or dispatched to the client. Our metal finishes are fully RoHS compliant, ensuring the processes used are free from any hazardous substances and compliant with the latest EU standards.

  • Hot dip galvanising

  • Powder coating

  • Wet spraying

  • Zinc electroplating

  • Anodising

  • Shot grit & blasting

  • Polishing

Hot Dip Galvanising. The steel is dipped in a molten (830 F) bath of at least 98% zinc at an angle that allows air to escape from tubular shapes or pockets, and allowing the zinc to flow into, over, and through the entire piece. Whilst immersed, the iron in the steel metallurgically reacts with the zinc to form a series of zinc-iron intermetallic layers and an outer layer of pure zinc.

Powder Coating. Often clients, designers and architects will specify powder coating for its high-quality, durable finish, allowing for maximized production, improved efficiencies, and simplified environmental compliance.  Used for protective and decorative finishes, powder coatings are available in an almost limitless range of colours and textures, with technological advancements resulting in excellent performance properties.

Wet Spraying. Unlike powder coating, wet spraying is a traditional surface coating method by which a liquid coating is applied to a prepared surface in aerosolised form through pump devices at high pressure. In many applications, the paint is delivered via pneumatic-powered tools or machinery to achieve a consistent, even coat along a chosen surface. Whilst powder coating often boasts benefits in reducing waste and increasing efficiency, wet spraying is easier to colour match if the client has specific requirements. Preparation techniques also allow for the surfaces to be completely joint and blemish free prior to the wet spray finishing.

Zinc Electroplating (BZP). The main benefits of zinc plating are that it offers excellent corrosion resistance as it is a sacrificial coating, in that the zinc coating slowly corrodes over time protecting the component underneath. Another benefit is that the bright zinc plating itself improves the look of the base metal as clear zinc plating has a bright silver/blue appearance.

Anodising. An electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. Aluminium is ideally suited to anodising, although other nonferrous metals, such as magnesium and titanium, also can be anodized. The anodic oxide structure originates from the base material’s substrate and is not applied to the surface like paint or plating, but is fully integrated with the underlying substrate, so it cannot chip or peel. It has a highly porous structure that allows for secondary processes such as powder coating or wet spraying.

Shot & Grit Blasting. Shot blasting is typically used on metal parts for cleaning or removing old paint. Beads are projected through a specialist machine to remove impurities and restore the part to its original condition. Grit blasting is a type of protective treatment that attempts to smooth out a part, or in some cases provided a clean, hygienic, and aesthetically pleasing piece for sectors such as Food & Beverage and Pharmaceutical. Typically, particles are propelled against the surface of the part at a high speed to remove surface impurities to achieve the required finish.

Metal Polishing is the process of removing scratches and abrasions from a surface and creating the desired brightness of finish on said surface. Polishing consists of several procedures, each of which are less abrasive than the previous; carried out using a combination of polishing wheels and compounds on a specialist buffing machine or hand tool.