DIN EN ISO 15614-12:2022-02 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 12: Spot, seam and projection welding (ISO 15614-12:2021); German version EN ISO 15614-12:2021
2022DIN EN ISO 15614-12:2022-02 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 12: Spot, seam and projection welding (ISO 15614-12:2021); German version EN ISO 15614-12:2021
2014DIN EN ISO 15614-12:2014 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 12: Spot, seam and projection welding (ISO 15614-12:2014); German version EN ISO 15614-12:2014
2004DIN EN ISO 15614-12:2004 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 12: Spot, seam and projection welding (ISO 15614-12:2004); German version EN ISO 15614-12:2004