Overview
EN ISO 3834-5:2021 (ISO 3834-5:2021) defines the supporting documents - the International Standards, including relevant clauses and subclauses - with which a manufacturer or certification body can claim conformity to the quality requirements in ISO 3834-2, ISO 3834-3 or ISO 3834-4. In short, this part of the ISO 3834 series does not set new welding quality rules itself but lists the standards and documentation that demonstrate compliance with ISO 3834’s quality levels for fusion welding of metallic materials.
Key topics and requirements
- Scope: Identifies the specific ISO documents (and specific clauses/subclauses) that support claims of conformity to ISO 3834-2 (comprehensive), ISO 3834-3 (standard) and ISO 3834-4 (elementary).
- Options for claiming conformity: Adoption of the ISO documents listed in the included tables; use of technically equivalent documents; or the use of different supporting standards where required by application standards.
- Document types: Differentiates between:
- Type A documents - multiple ISO documents relevant to a welding process (see Tables 1–9); and
- Type B documents - single ISO documents specific to a welding process (see Table 10).
- Personnel and qualifications: Lists supporting standards for welders and welding operators (e.g., ISO 9606 series, ISO 14732) and welding coordination personnel (e.g., ISO 14731).
- Welding procedure and qualification: References standards for WPS and WPQR (e.g., ISO 15609 series for WPS, ISO 15614 series for procedure qualification).
- Inspection, NDT and calibration: Points to standards for non-destructive testing personnel (ISO 9712), inspection during/after welding (ISO 13916, ISO 17635, ISO 17636/37/38/39/40, etc.) and calibration/validation of measurement equipment (ISO 17662).
- Post‑weld heat treatment: References ISO 17663 where applicable.
- Certification requirement: Certification documents must list the supporting standards or documentation used to claim conformity.
Applications and users
- Manufacturers of welded metallic products who need to demonstrate conformity with ISO 3834 quality levels.
- Certification bodies issuing ISO 3834 conformity certificates - to ensure all supporting standards are listed and traceable.
- Welding engineers, quality managers, and auditors who create or verify welding quality systems, WPS/WPQR, NDT plans, and personnel qualifications.
- Procurement and compliance teams specifying contract or regulatory requirements for welded assemblies.
Related standards
- ISO 3834 series: ISO 3834-2, ISO 3834-3, ISO 3834-4
- Supporting standards referenced in ISO 3834-5 include: ISO 9606, ISO 14731, ISO 9712, ISO 15609, ISO 15614, ISO 17635, ISO 17663, ISO 17636–17640, ISO 17662, ISO 14555, and others cited in the tables.
Keywords: ISO 3834-5:2021, EN ISO 3834-5, quality requirements for fusion welding, supporting standards, welding certification, WPS, welding procedure qualification, NDT personnel, post-weld heat treatment.
