Services & Solutions

Fine Limit Sheet Metal

The highest standards of technical competency are coupled with state-of-the-art machinery to ensure that Propak consistently delivers the highest quality sub-contract fine limit sheet metal and finishing.

From one-off rapid prototyping, to full scale batch production, we work as your production partner, offering an agile and flexible service all backed up with excellent design support and the highest standards of quality control.

Our engineers use the very latest CAD/CAM programming and design software to optimise the manufacturing process, helping to provide our customers with the most cost effective manufacturing solutions.

Whether it is complex assemblies, bespoke bracketry or simple enclosures, we provide an end-to-end solution to seamlessly become your strategic sub-contract manufacturing partner who offers:

• CNC Fibre Laser Profiling Technology
• CNC Punching
• Coded Welding (Defence & Aerospace Standards)
• Metal forming, rolling and bending
• NC bending, metal forming and bending
• CNC controlled machining
• Bush Insertion
• Fettling & Linishing to the highest standards
• Fast Track Prototyping & Pre-Production
• Carbon, Steel, Stainless Steel, Aluminium, Beryllium, Copper along with released   materials used
• For surface finishes see link.

With our value-added services such as KANBAN stock holding, product design, prototyping, electro-mechanical integration and assembly; Propak customers can be confident of an efficient, quality conscious and reliable service, all executed within one long-standing, passionate and versatile company.

Advanced AS9100 Manufacturing

Our advanced manufacturing department is a stand-alone cell specifically formed to meet the quality, precision and excellence expected from the Aerospace & Defence, Marine, Petrochemical and Medical industries, the most demanding in terms of quality.

We completely understand our market and to demonstrate this, Propak is one of only a few manufacturing companies to hold and maintain both ISO 9001:2018 and AS9100 Rev D Aerospace & Defence Quality Control Systems.

Propak also hold preferred vendor status and approvals from some of the most respected and quality conscious companies in the world such as:

• Rolls Royce
• Transport for London
• Thales
• Ultra Electronics
• Ferranti
• BAE Systems
• + many more

Partnering with Propak gives our customers the confidence and comfort that parts and assemblies are of the highest standard, fully compliant, have complete traceability and this is all backed up by our efficient and robust delivery performance which is SC21 Silver Awarded.

Painting & Surface Treatments & Electro Plating

Our surface finishing departments are spread across 32,000 sq. ft and form a major part of our business, offering the largest range and highest specification of finishes available on the market.

All processes are carried out in-house so we have complete control over quality, production, planning and delivery. It ensures our products are manufactured and finished to the highest standards as we do not have to rely on the delivery performance, quality or capacity of subcontract suppliers. For further reassurance, our quality control systems provide accurate traceability and documentation of all parts and we take the responsibility and accountability required to meet our customer demands.

• Stove Enamelling – LUL, Rolls Royce and DEF Standard approved
• Electrostatic Powder Coating – LUL, Rolls Royce and DEF Standard approved
• Electro Plating Dept – 80 processes including Salt Spray & Conductivity Testing Chambers
• Silk Screening & all associated activities
• Bead Blasting & Thermal Zinc Metal Spraying
• Stainless Steel Polishing & Graining
• Laser Marking
• Engraving and labelling

Painting Department

Formed in 1992 our highly skilled, in-house painting department has many years’ experience in the powder coating, wet spray and stove enamelling industry. It helps us offer convenient and cost-effective end-to-end manufacturing and finishing solutions for all our customers.

Large investments in our state-of-the-art powder coating and stove enamelling plant, has given us the capability to finish components up to 3m high x 3m long x 3m wide.

Propak can offer both DEF Standard and British Standard finishes. We are approved to use industry leading suppliers such as Akzo Nobel, Cromodex, Thermoset IGP, Trimite and Valspar and can provide back-to back warranties for all our finishes.


To ensure excellent results, preparation is the key. Propak have a range of in-house pre-treatments to ensure the highest levels of adhesion and a blemish free finish.

• Phosphating
• Shot and bead blasting
• Thermal Zinc Metal Spraying – 25 year warranty
• Chromate Conversion – Alochrome 1200
• SURTEC 650

Aluminium must be subjected to rigorous pre-treatment to ensure thorough cleaning and surface preparation. At Propak our extensive in-house facilities and quality-assurance makes sure the pre-treatment process includes full-immersion acid cleaning, plus an acid etch which provides a superior matt surface for further chemical treatment and eliminates any defects.

These processes guarantee effective surface preparation for the relevant parts, to allow excellent application and adhesion of both electrostatic powder coating and wet spray applications.

Prototype & Product Design

Additional Services