ISO 3834 Welding Quality System Certification

Scope

ISO 3834 is an international welding quality management standard developed by the International Institute of Welding (IIW). It applies to all metal fabrication enterprises requiring permanent welding, widely used in steel structures, bridges, pressure vessels, energy equipment, ships, rail transportation, offshore engineering, and heavy industrial equipment. This certification is a prerequisite for CE marking (e.g., EN 1090) in the EU market and is widely recognized by international engineering projects.

[Certification Content]

• ISO 3834 focuses on quality control throughout the welding process, including:

• Welding Procedure Qualification (WPS/PQR)

• Welding Operator and Welder Qualifications

• Material Procurement, Identification, and Traceability Control

• Inspection Plans and Quality Records (e.g., ITP/NDT/Documentation)

• Management and Calibration of Testing Equipment

• Quality Management Responsibilities and Training

• Document Control and Continuous Improvement Measures

[Certification Levels]

Based on product complexity, quality requirements, and enterprise conditions, ISO 3834 offers three levels:

• ISO 3834-2 (Comprehensive Quality Requirements): For enterprises with technically complex welding processes and high-quality demands, such as pressure equipment, nuclear power, and shipbuilding.

• ISO 3834-3 (Standard Quality Requirements): For enterprises with moderately complex welding structures, such as steel components and general machinery manufacturing.

• ISO 3834-4 (Basic Quality Requirements): For enterprises with simpler welding processes and smaller production volumes, with relatively lower control requirements.

[Certification Process]

1. Initial Assessment and Standard Implementation: Shanghai Allmark assists enterprises in defining welding scope, conducting gap analysis, and determining the appropriate certification level.

2. Training and System Establishment: Provides welding quality management training (including WPS, PQR, and welding manuals) and helps establish ISO 3834-compliant documentation.

3. Welding Procedure and Personnel Qualification: Guides enterprises through WPS and PQR qualifications and organizes welder/operator skill testing and certification.

4. Internal Audit and Mock Inspection: Conducts internal audits to ensure system effectiveness and identifies potential non-conformities in advance.

5. Third-Party Certification Audit: Assists enterprises in coordinating with certification bodies and provides on-site support during audits.

6. Certification and Surveillance: After certification, enterprises enter a periodic surveillance audit mechanism to continuously improve welding quality management.

[Allmark Advantages]

• 15+ years of experience in international welding quality standards.

• Expertise in integrating ISO 3834 with EN 1090, AISC, CWB, and other systems.

• Successfully guided hundreds of enterprises to achieve "zero-rectification certification."

• Professional team support throughout the process, reducing certification timelines.

• Provides integrated consulting services for European CE certification.

[Why Choose ISO 3834?]

• Meets international engineering project welding quality requirements.

• Enhances management capabilities and market competitiveness.

• Lays a solid foundation for structural certifications like EN 1090.

• Builds customer trust in product welding reliability.