Railway applications- EN15085 Railway applications-Welding of railway vehicles and components is a set of welding certification system for rail vehicles and vehicle components, which is widely popular in the railway industry. EN15085 series standards have been formally implemented in Germany since April 2008. This standard is a certification system for rail transport and vehicle parts welding. The standard has now gradually replaced the original German DIN6700 standard. At present, with the development of China's rail transportation, the export products of Chinese railway industry related enterprises are increasing. The certification is a necessary condition for the rail vehicles and vehicle components enterprises to export to the EU countries.