At LTi Metaltech, we specialise in high-integrity welding and fabrications that meet the most demanding industry standards for strength, safety, and compliance. Based in Oxfordshire and serving clients nationwide, we support critical industries including healthcare, nuclear and fusion and renewable energy.

With one of the largest teams of coded welders in Oxfordshire and the South of England, we deliver precision-engineered stainless steel, high-purity aluminium and nickel alloy components for applications where reliability is non-negotiable. From one-off prototypes to high-volume production, our welding and fabrication services are trusted by leading organisations across the UK and beyond.

Our Welding Capabilities

We combine advanced automation with manual expertise to deliver welds of the highest quality, supported by full traceability and regulatory compliance.

MAG Welding

At LTi Metaltech, our team of coded welders provides precision MAG welding services for stainless steel fabrications and high-volume component production. Based in Oxfordshire, we deliver reliable, repeatable welds for clients across the UK, serving industries where strength, durability, and compliance cannot be compromised.

What is MAG Welding?

Metal Active Gas (MAG) welding uses a consumable wire electrode and a shielding gas to form an electric arc with the workpiece. The shielding gas prevents contamination, producing a clean, consistent weld. Known for its speed and versatility, MAG welding is widely used in stainless steel structural applications and safety-critical components

Applications

Our MAG welding services are trusted across sectors where reliability matters:

• Healthcare – cryogenic vessels, diagnostic housings, sterilisation tanks.
• Energy – pressure vessels and containment systems for renewable power.
• Nuclear & Fusion – assemblies for high-pressure, high-temperature environments.
• Manufacturing – stainless steel frameworks and high-volume parts.
• Compliance & Standards

Compliance & Standards

All MAG welding at LTi is:

Performed by coded welders to EN 13445, PD5500, and AD Merkblatt 2000.

• Backed by ISO 9001 (Quality), ISO 14001 (Environment), ISO 45001 (Health & Safety).
• Supported with full QA documentation and weld traceability.

Robotic Welding

At LTi Metaltech, we operate two fully automated 13-axis robotic welding systems, delivering high-speed MAG welding of complex stainless steel assemblies. Serving clients in healthcare, energy, and fusion, our robotic welding ensures repeatability, accuracy, and scalability.

What is Robotic Welding?

Robotic welding uses programmable 13-axis systems with bespoke tooling, enabling welds at virtually any angle. This ensures consistent results across complex geometries while reducing production time and cost. Our robotic cells are fully reconfigurable for different product types or tandem loading.

Applications

Our Robotic welding services are trusted across sectors where reliability matters:

• Healthcare – serial production of cryogenic vessels and housings.
• Energy – precision welds for pressure-rated structures in renewables.
• Nuclear & Fusion – complex containment assemblies such as vacuum chambers.

Compliance & Standards

• All robotic welds programmed and supervised by coded welding technicians.
• Welds compliant with EN 13445 and other international standards.
• Full QA, non-destructive testing, and traceability for safety-critical projects.

TIG Welding

At LTi Metaltech, our coded TIG welders deliver precision welding of stainless steel and aluminium for safety-critical applications. Based in Oxfordshire and trusted nationwide, we support industries where compliance and reliability are paramount.

What is TIG Welding?

Tungsten Inert Gas (TIG) welding uses a non-consumable tungsten electrode to create an arc with the workpiece. Shielded by argon gas, TIG welds are renowned for accuracy, control, and flawless finishes. This makes TIG the process of choice for sensitive applications requiring corrosion resistance and minimal distortion.

Applications

• Healthcare – cryostats for MRI, sterilisation systems, pharmaceutical vessels.
• Energy – stainless steel pressure vessels for clean energy solutions.
• Nuclear & Fusion – cryogenic and containment assemblies under extreme conditions.

Compliance & Standards

• Welds compliant with EN 13445 and industry-specific codes.
• Operations certified to ISO 9001, ISO 14001, and ISO 45001.
• Conducted by coded welders with decades of experience in critical fabrication.

Keyhole Plasma Arc Welding

At LTi Metaltech, we deliver Keyhole Plasma Arc Welding (PAW) for stainless steel pressure vessels and high-integrity fabrications. Our Oxfordshire facility houses a bespoke linear gantry PAW system, enabling welds with unmatched penetration and precision.

What is Keyhole PAW?

PAW uses a tungsten electrode enclosed within the torch body, separating the plasma arc from shielding gas. When forced through a fine-bore copper nozzle, this creates a concentrated plasma beam capable of single-pass penetration up to 12mm in stainless steel, with minimal distortion.

Applications

• Nuclear & Fusion – vacuum chambers and containment systems.
• Healthcare – stainless steel housings and pressure assemblies.
• Energy – pressure-rated vessels for clean energy storage.

Compliance & Standards

• Aligned with EN 13445 pressure vessel requirements.
• Coded technicians with QA documentation for full audit readiness.
• Welds tested to ensure integrity and compliance.

Aluminium Seam Welding

At LTi Metaltech, we deliver industry-leading seam welding services tailored to meet the needs of businesses across Oxfordshire and the UK. Combining advanced technology with a team of skilled welding specialists, we provide durable, high-precision solutions for some of the most demanding applications in Healthcare, Fusion & Nuclear, and Renewable Energy sectors.

Our Oxfordshire-based team of coded welders brings extensive experience in all aspects of fabrication and welding for highly regulated industries. We specialise in semi-automated autogenous seam welding (ASW) for aluminium sheet fabrications - using DC current to achieve full penetration up to 6.5mm in a single pass, eliminating the need for filler wire. The result: exceptional weld integrity, consistency, and efficiency.

What is Aluminium Seam Welding?

Autogenous Seam Welding (ASW) is a welding technique that joins aluminium sheets with exceptional precision and strength without any additional material in the welding process. Continuous longitudinal seam welding offers efficient, repeatable performance for high-volume production across various thicknesses and widths.

Applications

• Healthcare – lightweight aluminium housings and medical equipment.
• Energy – corrosion-resistant aluminium assemblies for renewables.
• Transport – lightweight structural welds for rail and automotive.

Compliance & Standards

• Performed under ISO 9001, 14001, and 45001 certifications.
• Welds validated to EN 13445 and sector-specific standards.
• Full QA traceability for safety-critical projects.