Welding is a process where you combine two objects / materials by melting their surfaces. Welding is a method often used when joining metals or thermoplastics. Welding has been around for many years since it was developed in the 1880s in the United States. Or so did one of the methods at least. There are several different welding methods. The first to be developed was resistance welding. Then came gas welding and powder welding. Even within these categories, there are several methods. Which method to use depends a lot on the material, as well as how this is to be put together.If you have an impending welding task, then it is important that you choose some professionals to perform this. One way to ensure this is by certificate alu welding. In this way, you make sure that your welder has all the right certificates to be able to solve the task in the best way.