Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 5: Resistance welding (ISO 15609-5:2004); German version EN ISO 15609-5:2004— 18 стр.
Resistance welding - Weldability - Part 2: Alternative procedures for the assessment of sheet steels for spot welding (ISO 18278-2:2004); German version EN ISO 18278-2:2004— 28 стр.