Probe is licensed by the American Petroleum Institute (API) to manufacture and monogram products conforming to API specification 6A. API 6A is the worldwide accepted standard for the manufacture and production of wellhead and Christmas tree equipment. This quality standard is also audited and registered with API in accordance with the prestigious API Q1.

We are registered to the ISO 9001:2015 Management System Standard for the manufacture of oilfield equipment including wellhead equipment and associated parts, downhole tools, crossovers and general subcontracting machining services by the accreditation body DNV GL.

Our Quality Management System is registered with DNV GL to BS-EN-ISO 9001:2015, ISO-14001, OHSAS-18001. We are also registered with Bureau Veritas with a Certificate of Quality System Approval for Module “H” of the European Pressure Equipment Directive 2014/68/EU. In addition to these quality standards we are registered with Achilles/FPAL.

Probe licenses


Our certifications can be viewed and downloaded below:

ISO 9001 = ISO 14001 OHSAS 18001


API Spec Q1



Voestalpine Tubulars licence agreement for threading and repair of VAGT, Vasuperior, Varouhneck and Vaxplore threads



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Quality Promise

Ultimately, quality is about attention to detail and good communication – two things our clients regularly tell us we excel at. Our philosophy of a responsive, practical service is at the heart of our approach to quality management. This is evident in the form of fast response and clear communication of clients’ objectives and requirements and complemented by products of appropriate high quality, reliability, safety and cost effectiveness. We have also implemented a formal Integrated Management System (IMS) and have gained certification to ISO 9001 – 2008.

Service Promise

Our equipment production for the oilfield sector stretches back over 40 years. An early milestone was the purchase of our first CNC lathe in 1987 to provide us with the capacity to machine API and premium threads. Since then our plant list has expanded extensively, and we have grown in to one of the largest manufacturing supply chain partners in the East of England, with clients all over the world. We pride ourselves on offering a responsive personal service, every time you work with us.


Our large amount of raw material held on-site means that we can respond effectively to client’s urgent requirements. We believe this sets us apart from our competitors by allowing us to meet very short lead times to ensure that our client’s projects maintain momentum without quality being compromised. We understand the tight deadlines which are placed on oilfield suppliers which is why we pride ourselves on offering this fast-responsive service to minimise the pressure on our clients.


Our in-house raw material stock held is generally more than 1,000 tonnes and we can therefore meet urgent delivery times from this holding. All our stocks are subject to receiving full inspections and we have state of the art in-house facilities to perform a variety of non-destructive testing including ultrasonic examination, magnetic particle inspection, liquid penetrant inspection and Brinell hardness testing.