2021DIN EN ISO 13918:2021-12 Welding - Studs and ceramic ferrules for arc stud welding (ISO 13918:2017 + Amd 1:2021); German version EN ISO 13918:2018 + A1:2021
2021DIN EN ISO 13918/A1:2021 Welding - Studs and ceramic ferrules for arc stud welding - Amendment 1 (ISO 13918:2017/DAM 1:2021); German and English version EN ISO 13918:2018/prA1:2021