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Our Services

We offer a wide range of high-quality plating services, including:

  • Aluminum Anodizing
  • Chromate
  • Chromate Chrome-Free
  • Passivation
  • Black Oxide
  • Zinc Plating

Our team of experts has the skills and experience to provide you with the best possible results for all your metal finishing needs.

*Please note: SPI does NOT offer chrome plating.

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What are these processes?


Anodizing is a process that creates a protective layer on aluminum surfaces. Our aluminum anodizing services provide a durable, long-lasting finish that is resistant to corrosion and wear.


Chromate is a chemical treatment that provides corrosion resistance to metal surfaces. Our chromate plating services are ideal for a variety of applications, including aerospace, automotive, and electrical industries.

Chromate Chrome Free

We also offer chromate chrome-free plating services, which provides the same level of corrosion resistance as traditional chromate plating without the use of hazardous chromium compounds.


Passivation is a chemical treatment that removes impurities from metal surfaces, improving corrosion resistance and overall performance. Our passivation services are ideal for a variety of applications, including aerospace, medical, and electronics.

Black Oxide

Black oxide plating is a highly effective process that not only imparts a sleek black finish to ferrous metals but also forms a durable and corrosion-resistant layer on their surface, providing excellent protection against wear and tear, while also enhancing their aesthetic appeal.


We offer electro-galvanized zinc plating, which is a cost-effective and durable method of protecting metal surfaces from corrosion. Zinc plating is ideal for a variety of applications, including automotive, electrical, and construction industries.

For a list of the advantages of each, click here.

Contact us today to learn more about our plating services and how we can
help you achieve the best possible results for your metal finishing needs.



    (Please note: SPI does not offer chrome plating services).

    If you have any further questions, please feel free to use the contact form or give us a call at 303-733-4470.