Castech (UK)

With over 30 year’s experience, Castech (UK) are your single source solution for the manufacture and supply of Precision Components. We are ISO 9001:2015 accredited and work with leading companies from a variety of Industries including Aerospace, Military/Defence, Medical, Rail and more. We supply your components complete to drawing specification. We offer short lead times and competitive prices.

We manufacture and supply:

  • Aluminium Castings (Sand Casting / Gravity Die Casting / Pressure Die Casting)
  • Investment Castings
  • CNC Machined Components
  • Sheet Metal Fabricated Components
  • Polyurethane Mouldings

Precision Sand Castings

Castech (UK) Ltd have been specialist manufacturers of Precision Aluminium Sand Castings for over 26 years. Our unrivaled success is based on taking the well established Aluminium Casting process and integrating it with state of the art tooling techniques. This allows us the opportunity to cast a wide variety of casting sizes with different levels of intricacy. We have manufactured Sand Castings for industry leading companies from the following industries: Military, Defence, Medical, Optical, Electronics, Automotive and more. We are often casting housings, heat sinks, valves, pumps and other more uncommon components. We provide a complete service and deliver your components complete to drawing specification. We offer expert technical advice throughout the process as well.

Precision Sand Castings

Precision CNC Machining

Castech (UK) Ltd offer a comprehensive CNC Machining service. We are specialist machinists and offer CNC Turning and CNC Milling. We have recently invested in new machinery (Dugard Lathe) which is perfect for your low to medium batch quantities.

We are manufacturing CNC Machined components for companies in a wide variety of sectors including Military, Defence, Medical, Optical, Electronics, Automotive and more. Quality is monitored throughout the manufacturing process. Components are inspected individually to ensure they perfectly match the drawing. We are dedicated to quality control – as specified in our QA Manual.

Precision CNC Machining

Precision Investment Castings

At Castech (UK) Ltd we lead the field in the production of small, finely detailed and often very complex Investment Castings. Our typical markets are Aerospace, Military, Automotive, Defence, Medical, Communications, Electrical and more. 

What the Investment Casting Process can Deliver.

Thin Wall Sections – We can manufacture wall sections as fine as 0.2mm (0.008”), typically 1-3mm (0.04” – 0.12”).

Light Weight Components – Manufacturing techniques can be used to minimise material usage whilst helping maintain the integrity of the component. Some components can weigh as little as 1g (0.04 oz.).

Small Components – Maximum size of 190mm x 160mm x 160mm (8” x 6” x 6”). A length of 250mm (10”) is possible providing no other dimensions exceed 100mm (4”).

Detail – Complex detail on internal and external surface features.

Superfine Surfaces – With 0.8 micrometres (32 micro inches) being the “as cast” finish.

Zero draft angles – eliminating the need to do additional machining.

Precision Investment Castings

Pressure and Gravity Die Castings

At Castech (UK) Ltd we offer both Low Pressure and High Pressure Die Castings. We also offer gravity die castings. These are manufactured by pouring molten metal into cast-iron moulds. These moulds are permanent and produce a higher casting rate than Sand Castings. The tooling however is significantly more expensive – with the unit prices significantly lower. Medium to high batch sizes are ideal and can provide great savings.

High Pressure Die Castings

Molten metal is injected into a die under very high pressure. Perfectly suited for high production runs and wall thicknesses can be as thin as 1-2.5mm. High Pressure Die Castings offer the best quality surface finish and a high surface grain is obtainable. Full heat treatment is not possible for High Pressure Die Castings. Natural castings are very high strength. More susceptible to porosity although evacuated chamber and other methods can be used to reduce this. The start up costs are very high and long term production runs are required for you to really appreciate the very low cost unit prices.

Low Pressure Die Castings

This is a development of the permanent mould process – the metal enters the die from below. The metal is held in place by gas pressure until it becomes solid. Complex machinery is required - just like High Pressure Die Castings. Production rates are very good, although not as good as High Pressure Die Casting. Wall thicknesses can be as thin as 2-3mm. Yields are high and expected over 90%. Porosity free castings are achievable. 

Pressure and Gravity Die Castings

Sheet Metal Fabrications

At Castech (UK) Ltd we offer a full Sheet Metal Fabrication service. If you are looking for mass manufacturing of a particular component, we offer precision fabrication, laser cutting and machining services. We are always able to offer high reliability and quality.

We have state of the art machinery and can offer:


- Punching
- Milling
- Turning
- Welding
- Folding
- Laser Cutting

Sheet Metal Fabrications

Precision Polyurethane Mouldings

At Castech (UK) Ltd we are manufacturers of Precision Polyurethane Mouldings and have been involved in some excellent projects from companies in many industries (predominately Medical). With our state of the art facilities and technical knowledge, we can manufacture high precision components at very competitive prices.

Standard wall thicknesses are 3-4mm, but this can be reduced to 1.5mm in local areas or indeed increased to the required thickness, whilst ribs, bosses and other changes in thickness can be achieved. The general tolerance criteria is ±0.3mm up to 300mm (±0.1mm per additional 100mm thereafter).

Tools and mould tooling is manufactured to very high standards using the latest developments in resin, plastic and composite materials. We combine traditional skills with 3D CAD/CAM facilities and CNC Machining Technology to produce high quality tooling and components quickly and economically.

Precision Polyurethane Mouldings

Quality Assurance

Castech (UK) is ISO 9001:2015 certified and have been for many years. We are proud of this accreditation and always work in accordance to our Quality Assurance Manual. Our primary focus has always been to deliver excellent customer service. We work with our customers, offering Technical advice where appropriate, throughout the entire process. We are always looking to reduce our customer’s costs where possible whilst also looking to increase value along the way. This is reflected in our company Mission Statement.

Quality Assurance

Aerospace Engineering

Aerospace Industry – Working in accordance to AS9100 accreditation, we manufacture lightweight, non ferrous Investment Castings and CNC Machined Components with thin wall sections.

We have been Technical Sales Representatives for Sylatech Limited for over 26 years.

Customers from the Aerospace Industry are regularly seeking intricate, thin walled and lightweight components that are of excellent quality. Typical components that we supply for the Aerospace Industry are Electronic Housings, 90 degree conduit bends.

Aerospace Engineering

Military/Defence Engineering

We are proud to have manufactured Castings and Mouldings used in a variety of military applications. Supplied with Certificate of Conformance.

As a 100% British manufacturer committed to excellence, we have the capability to supply components complete to drawing including all additional sub-contract surface treatments. We have had some exciting projects in the past with leading companies from the Military/Defence industry.

Military/Defence Engineering

Analytical/Medical Engineering

Analytical/Medical Industry – We regularly machine components from solid in a variety of materials including Stainless Steel, Aluminium and Acetal for companies from the Analytical and Medical Industry. We also regularly supply Precision Polyurethane Mouldings (e.g. enclosures and housings).

Rigid Solid Polyurethane Mouldings are frequently specified to enhance high value low volume equipment. Our Reaction Injection Moulding system delivers short-lead times, low cost permanent tooling, close tolerances with high quality finishes.

Analytical/Medical Engineering

Rail Engineering

Rail – As a long standing supplier to the Rail Industry, we understand the importance of maintaining excellence in all departments.

We are approved suppliers of Aluminium Castings to leading Rolling Stock Rail manufacturers in the United Kingdom. We have excellent relationships with our customers and continue supplying high integrity castings to exacting quality standards.

Rail Engineering

Communications Engineering

Communication IndustryAluminium Castings and CNC Machined Components are common requirements often for leading OEM’s associated with Satellite communications.

We are well positioned to meet your requirements. Castech (UK) specialise in low volume batch quantities. We offer a variety of manufacturing methods and supply your components complete to drawing specification.

We have the ability to cast components up to a maximum weight of 500 kg.

Communications Engineering

Electronics Engineering

Electronics Industry – Small electronic housings and heatsinks are highly enquired about by our customers from this industry – CNC Machined from Solid, extrusion and Cast supplied complete to drawing. We are regularly machining enclosures that do not require a cosmetic finish. For the enclosures that do, we offer a host of surface finishes and can supply your component complete to drawing specification (Wet Paint, Powder Coat, Anodising, Alochroming and more).

Electronics Engineering

Oil and Gas Engineering

Oil and Gas Industry – We supply Precision Castings to the Oil & Gas Industry to exacting standards with full traceability including surface treatments e.g. Resin Impregnation, HIpping, Hard Anodise.

Oil and Gas Engineering

Sub Sea Engineering

Sub Sea Industry – From seabed to surface engineering, including Remotely Operated Vehicles (ROVs), we supply components to exacting standards.

Castech (UK) have a wealth of experience and understanding of the engineering demands for components that enter some of the worlds harshest environments. These types of projects are always exciting and we will be offering our technical advise at every stage of the design and development process.

Sub Sea Engineering

Castech (UK) Overview

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