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Metal finishing – The perfect finish

Portsmouth Aviation has provided high-quality, close-tolerance metal finishing services for more than 60 years. We boast one of the largest and best-equipped metal treatment facilities on the south coast and are accredited with all relevant quality approvals, including NADCAP accreditation.

We also run comprehensive in-house testing on our products to ensure that all components are anodized, coated, treated or painted to your precise specifications.

High quality metal finishing services

We are committed to providing the highest level of services. We deliver:

Experience and expertise

Over 90 years experience providing high quality metal finishing services.

In-house testing

Comprehensive in-house testing for ultimate quality and control

Partner approach

Working closely alongside our customers, we ensure every aspect of our service is tailored to their needs.


Our efficient processes ensure our metal finishing services are cost-effective.

Our services include:

  • Sulphuric Anodising

  • Chromic Anodising

  • Nitric Acid Passivation

  • Alocrom 1200

  • Zinc Plating

  • Cadmium Plating

  • Iridite NCP

  • Wet paint systems and powder coat systems

  • Non-destructive testing

Bespoke metal finishing services

Powder coating

We offer powder coating services for a wide range of metal components. This method is far more durable than conventional paint and the reduced wastage allows us to pass on savings, making it a cost-effective process. The process is also more environmentally friendly, as no volatile organic compound (VOCs) are released, while also being quicker than traditional wet systems.

Painting, spraying and shot-blasting

We are able to carry out a wide range of wet coatings to meet our customer’s specific needs. Our services include pre-coat preparation, zinc metal spraying, specialised masking and shot, bead and vacuum blasting. All activities take place within purpose-built painting and baking booths and under extensive environmental controls.


We operate a fully equipped in-house laboratory that’s capable of conducting an impressive array of tests. From salt spray to hardness and conductivity testing, we have the know-how and facilities to ensure all metal treatments meet your requirements.


Approvals for metal finishing treatments are held from a number of primes, including Britten-Norman Aircraft Ltd, Augusta Westland and BAE Systems. These are in addition to our own company approvals, which include AS 9100 Rev.D, ISO 9001 : 2008 and ISO14001 : 2004, NADCAP (the anodise metal treatment process).

Contact us regarding metal finishing services

To find out more about our metal finishing services, please get in touch.

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Sector Case Study

  • Case Study | 21st Century Supply Chains Bronze Award

    In March 2019, we achieved the SC21 Bronze Performance Award.

    View Case Study
  • Case Study | NADCAP Success

    In 2019, we were accredited by the National Aerospace and Defence Contractors Accreditation Program (NADCAP) for the anodise metal treatment process.

    View Case Study
  • Case Study | UK MoD

    We recently completed a programme of work with the UK MoD to clear the Mk11 Depth Charge for flight. 

    View Case Study

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