We are pleased to announce that our construction contractor, United Infrastructure (UI) and its specialist welding subcontractor, CRC Evans (CRC), are set to begin welding and coating operations on sections of the Main Onshore Pipeline (the Pipeline) from June 2026. This follows a series of successful Non-Destructive Testing (NDT*) and mechanical tests, all of which have successfully passed.
*NDT is used to assess the quality and integrity of the welding techniques used to connect pipeline sections without causing any damage.
Pipeline welding involves joining sections of the Pipeline together by heating and fusing its ends to form a strong and continuous connection.
An automated process is being used for the Pipeline and will have a “front-end” welding crew working on the initial joint and “back-end” welding crews working on the fill and cap layers. This method allows the efficient construction of the Pipeline, with up to 500 metres of pipe sections being welded per day.
In areas where more complex pipeline fabrications are required (due to physical constraints e.g. road, river and rail crossings), dedicated UI teams will carry out the complete welding process.
Protective coatings will be applied to the Pipeline to prevent corrosion and ensure its long-term safety.
This protective coating process will run behind the welding operation and will be completed only after the NDT has approved the weld, ensuring the Pipeline is protected at every stage.
More information on the construction of the Pipeline will be added to the Latest News section of the HyNet Hub in advance.
*NDT is used to assess the quality and integrity of the welding techniques used to connect pipeline sections without causing any damage.
What is welding?
Pipeline welding involves joining sections of the Pipeline together by heating and fusing its ends to form a strong and continuous connection.
An automated process is being used for the Pipeline and will have a “front-end” welding crew working on the initial joint and “back-end” welding crews working on the fill and cap layers. This method allows the efficient construction of the Pipeline, with up to 500 metres of pipe sections being welded per day.
In areas where more complex pipeline fabrications are required (due to physical constraints e.g. road, river and rail crossings), dedicated UI teams will carry out the complete welding process.
What is coating?
Protective coatings will be applied to the Pipeline to prevent corrosion and ensure its long-term safety.
This protective coating process will run behind the welding operation and will be completed only after the NDT has approved the weld, ensuring the Pipeline is protected at every stage.
More information on the construction of the Pipeline will be added to the Latest News section of the HyNet Hub in advance.