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Radiographic Testing (RT) for Large Weldments

Radiographic Testing (RT) is a form of traditional non-destructive testing (NDT) that is used to inspect the internal structure of assets in the oil & gas, power generation, manufacturing, and aerospace industries.Radiographic testing (RT) is one of the most popular non-destructive testing methods used to detect defects in a wide range of products.
At Openex, we combine high quality welds with Radiography Testing NDT services to produce excellent goods for our customers.
At present, we have three NDT X-Ray Testing Labs,the largest one is with a Testing range of 30000mm*6800mm*6500mm, Testing thickness can be up to 200mm.
Contact us for more about our NDT
Radiographic Testing (RT) NDT

Radiographic Testing (RT) is a non-destructive testing (NDT) method which uses either x-rays or gamma rays to examine the internal structure of manufactured components identifying any flaws or defects.

In Radiography Testing the test-part is placed between the radiation source and film (or detector). The material density and thickness differences of the test-part will attenuate (i.e. reduce) the penetrating radiation through interaction processes involving scattering and/or absorption. The differences in absorption are then recorded on film(s) or through an electronic means. In industrial radiography there are several imaging methods available, techniques to display the final image, i.e. Film Radiography, Real Time Radiography (RTR), Computed Tomography (CT), Digital Radiography (DR), and Computed Radiography (CR).

There are two different radioactive sources available for industrial use; X-ray and Gamma-ray. These radiation sources use higher energy level, i.e. shorter wavelength, versions of the electromagnetic waves. Because of the radioactivity involved in radiography testing, it is of paramount importance to ensure that the Local Rules is strictly adhered during operation.

Computed Tomography (CT) is one of the lab based advanced NDT methods that TWI offers to industry. CT is a radiographic based technique that provides both cross-sectional and 3D volume images of the object under inspection. These images allow the internal structure of the test object to be inspected without the inherent superimposition associated with 2D radiography. This feature allows detailed analysis of the internal structure of a wide range of components.

Benefits of RT:

  • Can inspect assembled components
  • Minimum surface preparation required
  • Detects both surface and subsurface defects
  • Provides a permanent record of the inspection
  • Verify internal flaws on complex structures
  • Isolate and inspect internal components
  • Automatically detect and measure internal flaws
  • Measure dimensions and angles within the sample without sectioning
  • Sensitive to changes in thickness, corrosion, flaws and material density changes

Radiographic Testing is widely used in the:

  • Aerospace industries
  • Military defence
  • Offshore industries
  • Marine industries
  • Power-gen industries
  • Petrochem industries
    Waste Management
  • Automotive industries
  • Manufacturing industries
  • Transport industries


Specialists in Heavy duty fabrication

We are one of the very few companies that have the capabilities to provide a full range of metal fabrication services to customers worldwide. We produce metal parts, components, and assemblies involving single or combinative processes such as machining, metal fabrication, casting, forging, etc. Our products are applied to a variety of industries serving a wide range of purposes, such as Machinery, Rail Transit, Power/Energy, Boat/Bridge, Infrastructure, Oil/gas, Aerospace, etc.

As part of our quality assurance program, we complete several steps to monitor the production quality of our products using our high-tech equipment, such as RT Lab.

More about our Radiographic Testing (RT) -NDT
We ensure the reliability and safety of the products we manufactured with our non-destructive testing (NDT) services. Contact us today at to learn more about our capabilities or request a quote to get pricing details for your next project.

About Openex

Openex is home to a full-service, one-stop-shop, contract manufacturing company producing custom large machined parts and fabrications. Our full large fabrication services including large machining, cutting, welding, rolling, punching, braking, testing, painting, and others.
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