Classification of European standards are smaller, highly targeted features in the applications pay attention to the preconditions, such as using manual arc welding electrode during welding structural steel standards EN499, EN757, EN499 Material yield strength for the strength of the structure ≤ 500Mpa steel, and EN757 for material yield strength> 500Mpa the strength of structural steel. In addition, while in the development of European standards, academic institutions or authorities by established norms or the use of many materials, procedures, materials developed for cold or hot processing technology regulations are based, such as Germany's iron and steel material specification SEW088 (melting of materials Welding of manufacturing procedures.) If it were not special orders, then the time of manufacture of the material in the weld can be SEW088 to develop welding.

Keywords: Welding Rods