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Glossary

CWB Certification

Canadian Welding Bureau certification — the Canadian standard verifying welder qualification and weld procedure compliance for structural welding.

Definition

What is CWB Certification?

The Canadian Welding Bureau (CWB) is Canada's national welding quality authority, administering certification programs under CSA Standard W47.1 (fusion welding of steel) and W47.2 (fusion welding of aluminum). CWB certification verifies that a welding company employs certified welders who have passed standardized qualification tests, follows documented Weld Procedure Specifications (WPS), and maintains a quality management system that is audited by CWB inspectors. CWB certification is required for structural steel welding on buildings, bridges, and infrastructure in Canada. ATS Metal Fabrication holds CWB Standard W47.1, Division 2 certification.

Common Applications

  • • Structural building components
  • • Industrial equipment
  • • Bridges and infrastructure
  • • Commercial and architectural metalwork
  • • Pressure-rated assemblies

FAQ

Frequently Asked Questions

What is CWB W47.1 Division 2 certification?
CSA Standard W47.1 covers companies that perform fusion welding of steel. Division 2 is the classification for companies that perform all types of structural welding without restriction on process, position, or material thickness — representing a comprehensive welding capability. ATS Metal Fabrication holds Division 2 certification.
Do I need CWB certified welding for my project?
CWB certification is required for structural steel welding on buildings, bridges, and other infrastructure subject to Canadian building codes. It is also required or preferred by many industrial OEMs and procurement specifications. If your project has a structural engineering specification, check for CWB certification requirements.
What is a Weld Procedure Specification (WPS)?
A WPS is a document that specifies all the parameters for a welding operation: welding process, base metal, filler metal, preheat, interpass temperature, travel speed, current, voltage, and post-weld heat treatment. CWB-certified shops maintain qualified WPS documents for all weld procedures performed.

Related Terms

See Also

TIG Welding (GTAW) MIG Welding (GMAW) Metal Fabrication Structural Steel Fabrication

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