EN ISO 3834-4
EN ISO 3834-4 Certification: Basic Welding Quality Requirements
What is EN ISO 3834-4?
EN ISO 3834-4 is an international standard that defines the “Basic Quality Requirements” for the welded manufacturing of metallic materials.
It is the entry-level section of the EN ISO 3834 series and ensures that companies performing simple welded production meet minimum quality standards.
This level is suitable for low-risk welded assemblies, including:
- Light steel manufacturing
- Simple machine parts
- General metalworking
- Workshop-type welding production
Purpose of EN ISO 3834-4 Standard
The main purpose of EN ISO 3834-4 is to:
- Ensure consistent quality in low-risk, low-complexity welded production
- Standardize welding processes
- Improve traceability and basic documentation
- Provide a cost-effective quality system for companies that do not require advanced welding controls
It is more flexible and less demanding compared to EN ISO 3834-3 and EN ISO 3834-2.
Which Companies Should Apply for EN ISO 3834-4?
EN ISO 3834-4 is ideal for companies engaged in basic welding operations such as:
- Basic-level welding workshops
- Light metal construction manufacturers
- Simple machine and equipment producers
- Small-scale fabrication shops
- Companies producing low-risk welded components
For more complex or safety-critical welded structures, EN ISO 3834-3 or EN ISO 3834-2 is recommended.
Technical Requirements of EN ISO 3834-4
1. Welding Personnel and Competence
- Verification that welders have basic training and practical experience
- Simple competency tests (visual checks, short practical tests)
- Awareness of welding processes and safety rules
- Advanced certifications (ISO 9606 / EN 287) are not mandatory at this level
- Competency confirmation is sufficient for low-risk welding work
2. Management of Welding Processes
- Basic welding instructions for simple assemblies (WPS-Light)
- Determining material thickness, filler material, welding position, and current settings
- Complex welding parameters (heat input, preheating, pass sequence) are generally not required
3. Materials, Consumables, and Equipment Control
- Basic inspection of steels, sheets, profiles, and filler materials
- Minimal certification requirements for consumables
- Ensuring welding machines are in safe operating condition with periodic checks
4. Pre-Welding, In-Process, and Post-Welding Controls
- Checking joint preparation, surface cleanliness, and fit-up
- Visual inspection after welding to verify weld quality
- Simple NDT methods if needed (e.g., dye penetrant test)
- Advanced NDT (UT, RT) is generally not required for this level
5. Documentation and Traceability
- Incoming material inspection records
- Simple work orders and welding control forms
- Equipment maintenance records
- Welder lists and basic competency documentation
- Documentation requirements are significantly lighter than 3834-2 and 3834-3
Benefits of EN ISO 3834-4 Certification
- Compliance with international welding quality standards
- Higher customer confidence and better supplier evaluation scores
- Improved internal process control
- Reduced defects and rework
- Cost-effective quality system for light steel and general workshops
- Increased preference for subcontracting and tender opportunities
Achieve World-Class Welding Quality
Upgrade your welded manufacturing processes to international standards with EN ISO 3834-4 Certification. Improve your product quality, customer trust, and overall welding performance.
Get EN ISO 3834-4 Certification with ATC INTL Turkey
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You can contact us anytime to begin your certification process.