With over 20 years of experience, GPX is highly regarded for its professional and reliable delivery of welding and grinding services across the UK's rail infrastructure
OUR REPUTATION IS BUILT ON THE QUALITY OF OUR WORK. SINCE 2014, WE HAVE COMPLETED APPROXIMATELY 100,000 ALUMINOTHERMIC WELDS AND 50,000 ELECTRIC ARC WELDS.
GPX uses the aluminothermic and electric arc welding processes to support Transport for London and Network Rail in the delivery of high-profile rail projects. Working under long-standing and collaborative framework arrangements, our focus is on providing the optimum welding solutions using the latest technology, and without any disruption to rail operations.
Given the nature of the works, the safety of our workforce, stakeholders and customers remains our number one priority. We are committed to avoiding any risk of injury, harm or ill health actuated by our welding and grinding activities, which is reflected in our comprehensive health and safety processes and procedures, and the high level of training provided by ITS. We continuously monitor those activities that present a risk to health and safety with particular emphasis on fatigue and travel to site, minimised through our strategically located network of UK facilities.
GPX's specialist teams offer:
All our aluminothermic welders are qualified in both the Goldschmidt Thermit (TW1-TW5) and Pandrol (RT1-RT5) processes. We also provide specialist tram rail welding teams.
As part of our welding capability, we supply qualified aluminothermic weld inspectors to scope our weld sites and provide clients with detailed reports. We also carry out post-weld inspections and use a master database to store all weld data, including our productivity rates.
Electric arc welding
Our experienced welders (MMA1-MMA7 and FCAW 1-4) carry out every aspect of arc welding on the railway network and repair all types of plain line and switches and crossings’ (S&C) rail defects.
To maximise the life of track, S&C and other rail assets while also reducing the associated risks, our rail grinding teams are highly experienced in removing rolling contact fatigue defects, lipping and corrugation and, using specialist equipment, in restoring worn rail to the optimal profile.
All our grinding teams are qualfied to industry competency standards, including Grinding Supervisory Manager and Grinding Operatve (TR80), and play a key role in meeting the requirements of our clients’ rail maintenance programmes across the UK
Leading the field in performance and innovation within the rail welding sector, GPX offers a wealth of experience and technical knowledge gained from working within the rail industry for the past 20 years. Members of the GPX team hold senior roles with industry bodies, such as the Institute of Rail Welding (IoRW), and sit on national and internationl standards’ committees, including BSI, CEN and ISO, with responsibility for developing and writing the technical standards.
Recent forward thinking has resulted in the purchase of fully supported modular rail grinding machines, the use of the Pandrol PLA Advanced process using self-sealing moulds, and the introduction of Transport for London’s phased array ultrasonic testing inspection system for checking the integrity of the welds. We also routinely use battery-operated welding and grinding plant and equipment, and our hand-held tablets make on-site reporting and recording of data quicker and more efficient.