Nomenclature of processes and reference numbers (EN) ISO 4063

Welding plays a crucial role in industrial production as a joining technique for different materials. A variety of welding processes and techniques are used to produce both simple and complex joints.

In order to better organise and classify the various welding processes and their specific areas of application, classification numbers are often used. The classification numbers for welding processes provide both companies and welding experts with a system for clearly labelling and identifying the various welding processes.

They are based on the EN ISO 4063 standard and therefore enable efficient coordination and harmonisation of welding work. In times of an increasingly globalised market and growing international cooperation, the significance of serial numbers in the welding sector is becoming ever more important.

In this article, you will get an overview of the serial number system in welding and learn how this system contributes to the simplification and improvement of welding processes. Below is an overview of the most important welding processes: