Surface Treatments

Post casting and machining, PI Castings can offer a number of specialised surface treatments, which are all carried out in accordance with a number of international quality standards.


Machined investment castings - Painted - PI Castings


Some of these treatments are carried out in-house, whilst others are performed by carefully selected and closely monitored 3rd party service providers depending on your requirements.

The Surface Treatments that we offer include:


Electro polishing



Mirror polishing


Hard Anodising

Shot Blasting


Chemical Blackening


other surface treatments

The shot blasting that we can carry out in-house includes Alumina Blasting, Stainless Steel Blasting to Rolls Royce specifications; and Plastic Bead Blasting.


Surface Treatments - PI Castings


Our surface finishing services allow us to deliver investment castings with a surface finish greater than the 3.2 micron finish produced by the investment casting process.

Get in touch

If you have any questions about our Investment Casting services, Machining services, Rapid Prototyping services or Low Cost Sourcing services, please make contact with one of our capable engineers and they will provide you with more information