Welcome to GD Engineering

Established in 1944, GD Engineering has gained a worldwide reputation for pioneering work in the design and manufacture of advanced pipeline access and pigging solutions. Serving the oil/gas, petrochemical and industrial processing sectors, as well as the emerging biofuels industry, we are instrumental in helping our customers to maximize their investment in pipeline infrastructure by facilitating any necessary maintenance or upgrade work.

Our quick-opening closures enable rapid access (either vertically or horizontally) to vessels once they have been depressurized. This can be done without the need for any special tools, and while ensuring complete safety for field operatives through a series of proprietary protection mechanisms. These state-of-the-art closures are capable of dealing with even the highest levels of pressure.

Suitable for both onshore and offshore deployment, our pig signalling solutions allow the accurate monitoring of pigs/scrapers while carrying out cleaning or inspection activities, so that the precise location of any potential problems can be determined. These are accompanied by high-reliability pig launching systems, which are suitable for both surface level (topside) and subsea application scenarios, and do not impinge on the pipeline flow. All our products can be supported by comprehensive project managed maintenance schemes.


The GD Engineering team of fully trained and experienced technicians and engineers, has extensive experience in the design, manufacture and service of Scraper Traps for inserting cleaning tools into Onshore, Offshore and Subsea oil/gas pipelines.

Operational maintenance costs through life can be reduced and efficiency increased with a Project Managed Maintenance Scheme, that is designed to function within existing operational commitments.

We can offer the complete onshore/ offshore inspection and maintenance service package for pipeline Pig Trap systems for all types of trap and closure manufacture. This can be set up and undertaken annually, or when necessary, a tailor-made Condition Monitoring and Maintenance Services Program can be established for individual systems, with detailed records of actual work carried out on-site by GD Engineering technicians kept as a permanent record.

These essential services include:

  • Maintenance and Refurbishment of Closures and Scraper Signallers
  • Seal Surface Refurbishment and Flange Face Machining
  • Interlock Systems Maintenance, Pig Trap Refurbishment
  • Modification and Trap Extensions
  • NDT Inspection
  • Wall Thickness Checking
  • Full After Sales Service and Spares Backup




Jul 16 - 21

Pressure Vessels & Piping Expo

Location: Atlanta, USA

Brands: GD Engineering

Product Category: Closures

Description: Come be a part of the revitalization of the Pressure Vessels & Piping Community at the 2023 ASME Pressure Vessels & Piping Conference in Atlanta, Georgia. This event is the perfect opportunity to stay up-to-date with the latest technologies, connect with professionals, practitioners, and peers in the Pressure Vessels & Piping industry, and expand your network.

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Sep 12 - 15

DSEI 2023

Location: London, United Kingdom

Brands: Copes-Vulcan, GD Engineering, ClydeUnion Pumps, Plenty Filtration, Plenty Pumps

Product Category: Pumps

Description: Join Celeros Flow Technology at DSEI 2023! DSEI connects governments, national armed forces, industry thought leaders, and the entire defense and security supply chain on a global scale. Don't miss this opportunity to connect, network, and engage with key stakeholders in the defense and security industry.

Where to Buy

Looking for information on quotes, pricing, and servicing? Contact our world class team and find out more.

Find a distributor near you


Houston, America

8800 Westplain Dr
Houston, Texas, 77041, USA

Phone: +1 281 469 0550
Email: gd@celerosft.com

Worksop, UK

Retford Road, Worksop,
Nottinghamshire, S80 2PY, UK

Phone: +44 1909 482323
Email: gd@celerosft.com

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