National Gas Services - what we do

From planned pipeline inspections and repairs to full replacements and upgrades, National Gas Services is your one-stop shop for all gas pipeline maintenance and fabrication.
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Emergency response
We operate a 24-hour, 365-day-a-year, emergency response service for pipeline operators. The service is known as CEME (centralised emergency materials and equipment).
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Inspection services
We assess the condition of gas pipelines and assets UK-wide using a range inspection techniques, including aerial and drone surveys, line walking and remote monitoring.
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In-line inspections
Our highly experienced in-line inspection team provides inspection services to detect corrosion, damage and defects inside pipelines of all diameters.
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Under-pressure operations
We have the expertise to safely carry out a range of services on pressurised pipelines, including complete flow stopping for planned and emergency works.
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Recompression
We use a fleet of mobile gas compressors to de-pressurise pipeline sections for remedial works, and then recompress the gas to pressurise and commission the system.

Mechanical maintenance
Our skilled engineers conduct a full range of mechanical maintenance work on gas pipelines, ensuring the network continues to operate efficiently and cost effectively.
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Pipeline repairs
Our repair services cover generic and bespoke repairs to both leaking and non-leaking defects on gas pipes of all diameters and materials, across all pressure ranges.
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Fabrication and welding
Highly skilled welders and fabricators in our depots carry out high-quality welding and complex fabrication on steel pipelines, operating to internationally recognised standards.

Painting, coating and blasting
Our state-of-the-art paint and blast facility provides painting, coating and blasting services for the full array of gas pipeline assets – from the smallest valves to the largest PIG traps.
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Project delivery
National Gas Services has more than 20 years’ experience of operating and carrying out construction works on gas pipeline projects, acting as contractor or principal contractor.
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