At Cutech, we provide radiographic testing to assess the internal structure and integrity of welds, castings and components without damaging the material. Our expertise supports accurate flaw detection, compliance with strict international codes and quality assurance across various industrial sectors.
What is Radiographic Testing (RT)?
Radiographic Testing Method Explained
Radiographic testing is a non-destructive testing method (NDT) which uses gamma or X-rays to capture internal images of components.
This radiographic testing method highlights internal flaws, porosity, inclusions, or cracks, particularly in welds and pressure retaining parts.
Applications of Radiographic Testing
At Cutech, our radiographic inspection service is widely used in oil and gas, structural steelwork, piping, and pressure vessel manufacturing.
It is crucial in areas where any internal defects could compromise the safety or function of welded structures, such as welds on pipelines, boilers, storage tanks and structural fabrications.
Radiographic Testing Techniques
Film Radiography vs. Digital Radiography Testing
At Cutech, we offer both digital radiography testing methods and film radiography testing.
- Film Radiography: This testing method provides a physical record of the inspection, which is useful for archival and verification purposes.
- Digital Radiography Testing: This method offers faster image processing, better storage, and easier analysis, making it ideal for high-volume inspection and remote collaboration
Real-Time Radiography (RTR) for Live Image Analysis
The use of real time radiography (RTR) enables our inspectors to view live X-ray images as they are captured. This supports ‘on-the-spot’ decisions and flaw analysis.
This method is ideal for automated processes and high-speed quality control in industries such as manufacturing.
Gamma Ray Testing vs. X-Ray Testing
We offer both Gamma Ray Testing and X-Ray Testing. The technique used depends on the application, site conditions and required penetration levels.
- Gamma Ray Testing: This technique is ideal for the inspection of dense materials or where locations have limited access. It uses radioactive isotopes and is often used in confined or remote settings.
- X-Ray Testing: This method is suitable for precise imaging where access to power and equipment is available. It is often used in fabrication yards or controlled environments.
Gamma Ray Testing in Confined and Remote Locations
At Cutech, we use Gamma Ray Testing where power supply is limited or access is restricted. This testing method is suitable for remote fieldwork and dense materials where deep penetration and portability are required.
X-Ray Testing of Pipe Welds
X-ray testing of pipe welds provides our technicians with detailed imaging of weld integrity. This technique supports code compliance and is essential in pressure systems and high-specification pipeline fabrication.
Profile Radiography for Corrosion Mapping
At Cutech, we use profile radiography techniques to map corrosion profiles in piping and pressure vessels. This testing method is non-intrusive and can quickly identify material loss without the need for internal access or system shutdown.
Weld Radiography and Specialised Applications
Radiography Test for Welding Quality Assurance
Our experienced inspectors utilise radiography testing for welding to verify weld quality and detect internal flaws that could lead to failure.
This is a core part of welding quality control, particularly for critical assets and pressure-rated systems.
Weld Radiography for Piping, Structural Steel, and Vessels
At Cutech, our weld radiography services are utilised for piping welds, structural components and storage vessels across various industries.
These radiographic testing methods help maintain compliance with welding codes and ensure the long-term structural integrity of the material.
Radiographic Testing Standards and Compliance
International Radiographic Testing Standards
At Cutech, all radiographic testing is conducted in accordance with international standards, including:
- ASME Section V
- ASTEM E1030
- ISO 17636
We apply best practices in equipment use, image quality control, and reporting.
Code Compliance: ASME, ASTM, API, ISO
We ensure that all radiographic inspection services align with required codes such as:
- ASME
- ASTM
- API
- ISO
Our documentation supports certification, audit trails and client quality systems.
Radiographic Testing Advantages and Disadvantages
Some of the considerations when reviewing radiographic testing advantages and disadvantages for inspection programmes include:
Advantages of Radiographic Testing
- High penetration for thick and dense materials
- Clear, permanent visual record of inspection
- Compatible with a wide range of metals and non-metals
- Highly effective at detecting internal defects like porosity, inclusions and cracks
- Non-contact method that doesn’t disturb the material surface
Limitations of Radiographic Testing
- Requires strict radiation safety procedures and trained personnel
- Higher cost and time compared to some NDT methods, such as ultrasonic testing
- Requires access to both sides of the component
Why Choose Cutech for Radiographic Testing Services?
Certified RT Technicians and State-of-the-Art Equipment: At Cutech, our radiography NDT services are carried out by certified RT technicians, qualified to ISO 9712 and ASNT standards. We use state-of-the-art gamma ray and X-ray equipment to ensure reliable and accurate results across field and in-house inspections.
Digital Image Processing and Reporting: We offer digital radiography testing with fast turnaround and secure data storage. Our processed images can be reviewed, shared and archived with traceable reporting to enable confident decision-making, a reduction in downtime, and to support long-term asset records. Our streamlined approach makes radiographic testing more efficient for both high-volume inspections and complex defect analysis.
Compliance with Industry and Regulatory Requirements: Our RT procedures are aligned with radiographic testing standards, including ASME, ASTM, API and ISO. We maintain robust QA/QC frameworks to meet the requirements of regulated sectors such as oil and gas, marine, and power generation.
Radiographic Testing FAQs
What’s the difference between Gamma Ray and X-Ray in RT?
Gamma ray sources are more portable and suitable for field use, whereas x-ray offers sharper imaging in controlled environments.
How does radiographic testing detect weld defects?
Radiography NDT identifies internal issues by capturing differences in density within the weld, which includes cracks, porosity or inclusions.
What codes govern radiographic inspection standards?
At Cutech, we are governed by standards such as ASME, ASTM, API and ISO to guide the safe and accurate execution of radiographic testing, inspection and reporting.