2023KS B ISO 15613-2023 Specification and qualification of welding procedures for metallic materials — Qualification based on pre-production welding test
2018KS B ISO 15613:2018 Specification and qualification of welding procedures for metallic materials — Qualification based on pre-production welding test
2003KS B ISO 15613:2003 Specification and qualification of welding procedures for metallic materials-Qualification based on pre-production welding test