This is a list of welding processes, separated into their respective categories.
The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063).
[1] Numbers in parentheses are obsolete and were removed from the current (1998) version of ISO 4063.
The AWS reference codes of the American Welding Society are commonly used in North America.
[2] Overview article: arc welding Overview article: Oxy-fuel welding and cutting Overview article: electric resistance welding