A built structure with ferrous materials must be protected from external elements, especially the weld seams. Many welding specialists have doubts about protecting them and have no idea what best weld through primer. That is why websites like Metalworkmasters have taken on the task of providing valuable information on this topic.

Before starting a welding project, the materials to be welded must be primed with zinc or copper-based products that are applied directly to the surface of the materials so that they do not rust and,at the same time, are not corrupted. This is key to obtaining an excellent weld.
Why is it best weld through primer?
The primer’s purpose is to prevent corrosion and oxidation of the ferrous materials that are going to be welded to keep it free of rust once the process is completed. This process protects the newly welded joint from oxidation and the inside of the welded material.
The primer is applied by hand, with a nozzle, or brush on the metallic material to be welded. The material applied during priming becomes liquid at the time of welding and runs into the weld pool, strengthening the currently welded materials. Also, these elements prevent future damage to the weld bead.
It is always best weld through primer
The primer is used to clean and seal the metals to guarantee better resistance against corrosion and achieve an excellent weld. They are generally very easy to apply products. These elements are dry in a few minutes, and the welding process can be started immediately.
They can be applied to metallic materials, aluminum, and galvanized surfaces. If you are going to store metals, it is advisable to apply a primer to protect them for long periods from corrosion. It is recommended to apply at least two primer coats before starting the welding process, do not speed up the process, and adhere to the established times. Go to the Metalworkmasters website and dig deeper, so you understand why it is the (best) weld through primer.