This type of testing is based on visual examination. It is used on a mandatory basis, and often even at this stage many discontinuities and imperfections can be detected with great accuracy. The main tool used in this field is the operator’s trained eye.
Nevertheless, during VT visual testing a range of specialist tools can also be used, such as a videoscope, which allow for precise diagnostics. However, there are a number of circumstances in which visual testing proves insufficient. In such cases we bring in other methods, tailored individually to the specific weld being tested, taking into account factors such as whether it is located in an easily accessible spot, its size and how it was made, as well as the materials it joins together.