Welding is one of the most important processes in many industries. It is used to build strong structures, machines, vehicles, equipment, tanks, pipelines, and many other metal products. Because welded parts often carry weight, pressure, heat, or movement, their quality must be managed carefully from the beginning to the end of production. ISO 3834 gives clear quality requirements for fusion welding of metallic materials. Its main value is that it helps companies control weldi
