McQuillan Process Services
McQuillan Process Services
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    Precision. Delivered. 

    Precision. Delivered. 

    McQuillan Process Services Ltd

    A serene landscape featuring rolling hills, a clear blue sky, and a serene river flowing through the scene.

    Welding, Pipe Fabrication, and Mechanical Installation Experts

    McQuillan Process Services Ltd provides specialist pipework, welding and mechanical services across the pharmaceutical, power generation, aerospace, food processing, dairy, drinks and data centre sectors. We deliver high-quality solutions for critical process and utility systems throughout Ireland and the UK.

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      Frequently Asked Questions

       McQuillan Process Services Ltd is a specialist provider of welding, engineering, process pipe fabrication, mechanical fitting and mechanical installation services with a focus on high-quality workmanship for critical projects.

      We primarily serve the pharmaceutical, power generation, aerospace, food processing, dairy, drinks and data centre sectors, providing specialist pipework, welding and mechanical services for critical infrastructure and process systems where quality, reliability and compliance are paramount.

      McQuillan Process Services Ltd is based in the UK, with a registered office address in Newry, Down. 

       Our core services include:

      • Specialist Welding Services and repairs (including high purity orbital welding).
      • Process Pipe Fabrication & installation.
      • General fabrication
      • Mechanical fitting & Installation Services.

      We specialize in stainless steel and carbon steel pipework, including high-purity BPE tubing and pressure-grade materials such as P235GH. Our expertise includes TIG, MIG, MMA and orbital welding for pharmaceutical, utilities, energy and industrial process applications. 

       Yes. Our team is experienced in delivering top-quality workmanship and expertise to help clients with their custom and critical projects, ensuring specifications for high purity, high integrity environments are met. 

      Our stated operating hours are typically 08:00 to 17:00, but we encourage you to contact us directly to discuss specific project timelines and availability. 

       The best way to start is to get in touch with our team directly via the contact page to request a call back or email to discuss your specific requirements for welding, pipework, mechanical installation or engineering.
       

      About McQuillan Process Services Ltd

      Our History

      McQuillan Process Services Ltd was established in 2023 by Director Mark McQuillan to provide specialist pipework, welding and mechanical services to the process industries. Since its formation, the company has built a growing client base across the pharmaceutical, power generation, aerospace, food and beverage, and manufacturing sectors.

      Mark began his career as a specialist pipe welder, completing part of his apprenticeship training at Babcock's in Tipton, West Midlands. Over more than a decade, he gained extensive experience working throughout the offshore oil and gas, power generation and process industries, delivering high-quality welding and pipework solutions on projects around the world.

      Today, McQuillan Process Services Ltd combines skilled workmanship, industry experience and modern equipment to provide pipework fabrication and installation, orbital welding, mechanical fitting and specialist maintenance services throughout Ireland and the UK. Our commitment remains the same: delivering safe, reliable and high-quality solutions for every client and every project.

      Our Equipment

      McQuillan Process Services Ltd invests in modern welding, fabrication and mechanical equipment to deliver safe, efficient and high-quality solutions. We undertake stainless steel and carbon steel pipework fabrication and installation, including pressure-grade materials such as P235GH, together with orbital welding, coded welding, mechanical installation and specialist maintenance services.

      Our equipment includes Axxair orbital welding systems, EWM AC/DC TIG inverters, Lincoln Power Wave 350 welding equipment with STT technology and dual-wire feeder capability, Lincoln Vantage 410 welding generators, and specialist pipe cutting, facing and bevelling machinery for both workshop and onsite projects.

      SafeContractor Accredited 2026

      McQuillan Process Services Ltd is proud to have achieved SafeContractor Accreditation for 2026. This certification demonstrates our commitment to high standards of health & safety, competency, and compliance across all our mechanical and welding services.

      Clients can be confident that our work is carried out by trained, qualified personnel and delivered in line with audited safety procedures. This accreditation reinforces our ongoing dedication to safe, reliable, and professional project delivery.

      McQuillan Process Services Ltd
      Professional. Qualified. Safe.

      Request a Quote

      Contact McQuillan Process Services Ltd via the Request Quote button at the top of the page to discuss pipework fabrication and installation, orbital welding, coded welding, mechanical fitting, process engineering, and specialist maintenance services. We support clients across Ireland and the UK, delivering solutions for planned projects, shutdowns, and emergency repair works.

      McQuillan Process Services Ltd

      Newry, Northern Ireland, UK

      Business Hours

      Open today

      08:00 – 17:00

      Copyright © 2026 McQuillan Process Services - All Rights Reserved.

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