.png)
_svg.png){kind=small}
%20X-Ray%20Testing.jpg)
X-Ray & Non-Destructive Testing (NDT)
We provide a range of non-destructive testing (NDT) services, including X-ray testing (radiographic inspection), ultrasonic testing and dye-penetrant testing to detect internal defects and discontinuities. These non-destructive testing methods ensures weld quality, material integrity and compliance with required industry standards. X-ray inspection in particular is critical for pressure-containing components where internal flaws could compromise safety or performance in service.
Call us • Contact sales • Consult an engineer • Choose FastTrack for urgent orders
What NDT Is Used For
Non‑destructive testing is used to assess integrity without damaging the component. In engineered components and welded fabrications, NDT is typically applied to:
-
Confirm weld quality where internal defects cannot be assessed visually;
-
Detect internal and surface-breaking discontinuities before a component goes into service;
-
Support acceptance decisions aligned to a project’s inspection and compliance requirements;
-
Reduce risk of failure in high‑pressure, high‑temperature, fatigue‑critical and safety‑critical duties;
-
And potentially many more reasons.
NDT is an essential supplement to verify that a manufactured component meets the inspection intent defined by the project specification.
NDT Methods That We Provide
X‑ray testing (radiographic inspection)
Radiographic inspection (X‑ray) is used to detect internal flaws in welded joints and pressure-retaining parts. It is especially important for pressure‑containing components, where internal defects may not be visible but can compromise integrity in service.
Common indications radiography can reveal include internal discontinuities such as porosity, inclusions, incomplete fusion or other weld quality issues (assessment depends on the specification and acceptance criteria).
Ultrasonic testing (UT)
Ultrasonic testing uses sound waves to identify internal discontinuities and to support integrity verification where UT is the appropriate method for the geometry, thickness and inspection plan. UT is often selected when radiography is impractical, or where the specification calls for ultrasonic methods.
Dye‑penetrant testing (DPT)
Dye‑penetrant testing is used to identify surface‑breaking defects on suitable materials and surfaces, supporting inspection of critical areas where surface cracks or discontinuities are a risk. We are capable of colour-contrast (standard dye-penetrant) testing and fluorescent testing.
The correct method is driven by your specification, material, geometry, thickness, access constraints and the type of defect the inspection plan is intended to detect.
What We Typically Inspect
NDT and X‑ray inspection are commonly applied to:
-
Welded fabrications supporting expansion joints and related assemblies;
-
Bellows and associated welded interfaces where inspection is required by the project;
-
Pressure components and pressure-retaining welds where integrity is critical;
-
Repair and refurbishment work where re‑welded or restored areas require verification prior to return to service.
If you are unsure which welds or features should be inspected, we can help interpret your inspection requirement into a practical inspection scope.
Why X‑Ray Or UT Inspection Is Critical For Pressure‑Containing Components
For pressure-containing parts, internal flaws can remain hidden until they are put into use. Radiographic or ultrasonic inspection is often used beforehand because it can help detect internal discontinuities that could:
-
Reduce pressure integrity and contribute to leakage risk;
-
Act as initiation points for fatigue cracking under cyclic duty;
-
Increase the probability of early-life failures in severe service environments.
If internal weld quality matters to safety or performance, X‑ray or ultrasonic inspection is one of the key tools that can provide confidence before commissioning.
Why Dye-Penetrant Testing Can Stop Leaks Before They Happen
Dye-penetrant testing is essential for detecting potential leaks or fatigue-points in any part of a complete bellows expansion joints assembly, revealing seams or rough surfaces in the metalwork before having to put the unit into use.
Dye-penetrant is the easiest and simplest way to guarantee your product is ready for deployment for whichever application it is needed.
What You Receive From NDT Inspection
Deliverables vary by project, but typically include:
-
Clear confirmation of the inspection method and scope performed;
-
Records and reporting aligned to the agreed inspection plan;
-
Identification of any reportable indications against the acceptance criteria in the applicable specification;
-
Practical next steps if issues are found (repair route, re‑inspection plan, replacement recommendation).
Where inspection is part of a wider manufacturing or repair programme, we can also align inspection results with corrective actions and release documentation.
How To Request NDT Services
To quote and schedule NDT efficiently, please provide:
-
Component type and drawing or weld map (where available);
-
Material and thickness range;
-
Which method is required (X‑ray radiography, UT, dye‑penetrant), or the inspection standard requiring it;
-
Acceptance criteria or applicable project specification details;
-
Access constraints and inspection location constraints (workshop or site conditions);
-
Programme requirements and any critical dates;
-
Documentation requirements for release and compliance.
If you are dealing with a failure investigation or shutdown replacement, include photos and a short description of the issue. That helps define the most useful inspection scope.
FAQs About NDT Testing
Which NDT method should we use for our component? It depends on the specification, geometry, thickness, access constraints and the defect types you are trying to detect. Share your drawing and inspection requirement and we will advise the most practical route.
What is the difference between X-ray radiographic inspection and ultrasonic testing? X-ray radiography and UT are both used to assess internal integrity, but they behave differently depending on thickness, geometry and access. Your inspection plan or standard typically determines which is appropriate.
Can dye penetrant testing detect internal defects? No. Dye penetrant testing is used for surface breaking indications only. For internal discontinuities, radiography or ultrasonic testing is typically required, depending on the specification.
Do you provide NDT for pressure containing components such as bellows and expansion joints? Yes. NDT and X-ray inspection are commonly used to support integrity verification on pressure-related components, aligned to the project’s inspection and acceptance requirements.
What information do you need to quote X-ray and NDT inspection quickly? A drawing or weld map, material and thickness, required inspection method or standard, acceptance criteria, inspection location constraints and programme dates are usually sufficient.
Read more FAQs here
