Tested and certified.
ZZ Steel · Power Infrastructure
WELDING QUALIFICATION
Qualified Welding. Reliable Structures.
All welding activities are performed by qualified welders using qualified procedures in accordance with international standards and project requirements.
WPS/PQR approved.
Standards and specifications.
Complete records.
Reliable joint integrity.
Welding Qualification Process
Codes and project specs.
Develop and test PQR.
Performance testing.
Use qualified WPS.
VT and NDT.
Complete documentation.
Applicable Standards & Codes
ISO
- ISO 15614
- ISO 9606
- ISO 3834.
AWS / EN
- AWS D1.1
- EN 1090-2.
Project Codes
- GB 50661 and client-specific requirements.
Qualification Records
| Record | Purpose | Typical Content |
|---|---|---|
| PQR | Procedure qualification | Process · material · thickness · joint · test results |
| WPS | Production instruction | Parameters · consumables · positions · preheat |
| WPQR | Welder qualification | Welder ID · process · position · validity |
| Welder List | Current status | Qualified process · range · expiry |
Testing & Inspection
Visual Testing
Ultrasonic Testing
Magnetic Particle
Penetrant Testing
Mechanical Test
Macro Examination
Quality Control & Documentation
Welding Consumables
- Approved electrodes and controlled storage.
Process Parameters
- Current, voltage, speed and heat input recorded.
Traceable Dossier
- WPS, welder ID, inspection and NDT reports.
Our Commitment
Welded Joint Types
Build a stronger project with ZZ Steel.
Share your requirements with our engineering and sales team.