AENOR UNE-EN ISO 15612:2019 Specification and qualification of welding procedures for metallic materials - Qualification by adoption of a standard welding procedure specification (ISO 15612:2018)
2019AENOR UNE-EN ISO 15612:2019 Specification and qualification of welding procedures for metallic materials - Qualification by adoption of a standard welding procedure specification (ISO 15612:2018)