The importance of non-destructive testing

There are plenty of advantages with welded steel tubing. Most notably the tube can be cheaper and generally has a smaller production time. In terms of applications, there can be far more choice with the products. This can include large diameter sections with thinner walls. Whatever you choose though, it is important to look at the quality. That is something you don’t need to worry about if you come to us for the finest ERW steel tubes in the West Midlands.


ERW steel tubes West MidlandsThe main drawback with tubes that have a weld seam is the welding must be high quality. There must be care to reduce inclusions and ensure there are no other flaws like laps. If there are too many, the products won’t be fit for purpose.

Tubing can require testing to ensure it is appropriate to use. Non-destructive testing methods are generally the best choice. You can’t rely on destructive methods after-all because they would destroy each piece of tube.

The greatest thing about NDT is you can utilise so many different methods. This choice means you can select testing to suit any requirements, such as different materials, sizes, and shapes. You can even combine tests to get a clearer picture if necessary. Sometimes a combination can help to resolve potential flaws with the tests.

What to look for?

Non-destructive testing can check for surface issues as well as those within the weld itself. You can use the techniques to test ERW steel tubes in the West Midlands and much more.

The most important things to look for are cracks, air holes, slag inclusions, and lips. Each of them can have an impact on weld quality and properties such as pressure resistance.

On top of this, the NDT should ensure the surface quality is good. This includes the appearance of the weld. Welds must always be well formed and a suitable height and width.


It is also important to note the time when you need to test tubes. In some cases there can be a delay in the appearance of cracks in weld joints. Generally it happens because of cooling or heating. If cracks are likely to form after the weld cools, you should wait a period of time to allow the cooling before you test. Never do the tests while tube is still hot.

There are some situations where tubes receive additional heat treatment after manufacturing. The goal here is to improve the mechanical properties. However, the reheating can result in cracks forming in the weld. In these situations you should test after initial manufacturing and again once the heat treatment is complete.

Do you want to order the most reliable ERW steel tubes in the West Midlands?

Union Steel Tubes knows the importance of quality. In fact, we are ISO 9001 certified because it is so important to us. We do everything here with an eye on ensuring the products we offer and the level of service are unbeatable. Plus, we can use our huge amount of experience to help clients select the right tubing.

So, if you want ERW steel tubes in the West Midlands, you won’t find any products better than ours. Contact us and order now.