Engineering & Design

At Sigma ASL we’re experienced in solving highly complex engineering problems. Using advanced modelling and simulation techniques, our engineers can refine and optimise any design to meet the most exacting needs – whether that’s reducing weight and costs, meeting aggressive production timing targets or increasing efficiency.

Precision Manufacturing

Equipped with state of the art technology, we manufacture machined castings in aluminium, magnesium and iron.  For each project, we select the most cost-effective process from HPDC, PMDC (gravity), high-level vacuum die casting, investment casting and conventional casting methods. We also design, manufacture and supply oil pumps, machined forgings and screw machined components to support various needs of our customers. Our manufacturing facility achieves outstanding levels of efficiency, output and complexity while meeting all the highest international quality standards.

Global Logistics

Over two decades Sigma ASL has built a reputation as a leading logistics service provider. Thanks to close partnerships with a trusted network of global partners we can offer complete supply chain management solutions, customised to your specific operational and strategic requirements. Our service includes scheduling and material flow management, shipment monitoring, local warehousing inventory optimisation and haulage, all with 24-hour customer support.

The road to success!

We’ve been supporting the automotive industry for more than 30 years.

Aluminium – High-Pressure Die Casting

Products: Clutch Housing, Cover Rear Assy, Valve Body, Aux Cover

Die Casting Machine Capacity: 350 / 650 / 850 / 1250 / 2250 / 2500 / 3250 ton

Product Range: Up to 20kg

Open PDF Data Sheet

Carbon Steel & Alloy Forging / Turning (Screw Machining) / Stamping

Products: Yoke, Spacer, Shaft, Spool, Hub Pin, Drain Plug, Lube Tube, Reaction Plate, Washer

Material: Hardening steel, carbon steel, alloy steel, stainless steel

Open PDF Data Sheet

Aluminium – Permanent Mold Die Casting

Products: Supercharger Housing, Hybrid Motor Housing, Main Case

Product Range: Up to 20kg

Open PDF Data Sheet

Oil Pump Assy

Products: Transmission Lubrication Pump for Heavy Duty and Medium Duty Vehicles

Open PDF Data Sheet

Iron Casting

Products (Horizontal Mold / DISA Sand Casting): Bearing Cover, Support Plate, Adjust Ring, Shift Block
Products (Lost Wax Casting): Cover, Impeller, Valves

Open PDF Data Sheet

A bit about us…

Sigma ASL specialises in the design, manufacture and supply of complex machined castings, oil pumps, machined forgings and screw machined components for the automotive industry. These precision components are engineered and produced in our dedicated facilities in South Korea, overseen by some of the country’s best engineers.

The Sigma ASL global team manage your whole project, from concept design through to mass production and global distribution. By bringing together  the highest levels of technical expertise, advanced manufacturing and supply chain management, we can offer complete solutions to the most demanding projects. Underpinning all our work is the drive to deliver maximum value for our customers.

“With its well-developed infrastructure, low-cost raw materials and highly qualified workforce, South Korea is today’s most exciting environment for automotive engineering.”

Shang Yun Kim
Chief Executive Officer
Sigma ASL Korea

A Perfectly Machined Supercharger Housing

  • Material : ASTM A356, A380 etc / JIS AC4B, AC4C etc / BS LM24, LM25 etc
  • Surface Finish : Anodizing
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Get in Touch

Each engineering task demands its own unique combination of process, technology and personnel. That’s why we approach every project with an open mind, taking the time to really understand your business before proposing a solution. This personal approach – along with clear communication and dedicated customer service – has helped us build exceptionally strong partnerships with customers and suppliers all over the world, many of whom have been with us since we began. And this commitment to excellence has been recognised by Eaton Corporation with their Premier Supplier Award.

Call us today to discuss how we can work together to make your project a success.

Paul Hancock – Business Development Manager, UK
+44 (0)7880 062311

Slawek Zalewski  – Business Development Manager, Central-Eastern Europe, Germany & Scandinavia
+48 (0)693 302103

Giorgio Saretto – Business Development Manager, Italy

Chris Kyrios – Business Development Manager, USA
+1 804 398 9141


Sigma ASL Limited,
1st Floor Progress House,
41 Progress Road
Leigh on Sea,
Essex SS9 5PR
United Kingdom