What is Nondestructive Testing (NDT)?

Nondestructive testing(NDT) is used in inspecting, testing, or evaluating materials, components or assemblies for discontinuities, or differences in characteristics without destroying the pipes, fittings or flanges products. It means the products can still be used when the inspection or testing is completed. In contrast to NDT, other tests are destructive in nature and only can be used in some samples which will not be used as finished products in project.

These destructive tests are often used to calculate the physical properties of materials such as impact resistance, ductility, yield and ultimate tensile strength, fracture toughness and fatigue strength.

Carbon steel weld neck flange after NDT

Today modern nondestructive tests are used in manufacturing, fabrication and in-service inspections to ensure product integrity and reliability, to control manufacturing processes, lower production costs and to maintain a uniform quality level. During construction, NDT is used to ensure the quality of materials and joining processes during the fabrication and erection phases, and in-service NDT inspections are used to ensure that the products in use continue to have the integrity necessary to ensure their usefulness and the safety of the public.

DIN 2605 Stainless Steel 90 Degree Elbow After NDT

It should be noted that while the medical field uses many of the same processes, the term “nondestructive testing” is generally not used to describe medical applications.

Haihao Group quality checking department can carry out the NDT inspection as per clients requirement.If you have any questions about our products(steel pipes,pipe fittings and flanges),please contact us immediately!