- CWT National Welding Certification Testing Bureau
- Serve the welding industry, and help maintain the publics safety through the administration and issuance of certifications and accreditations in welding, or inspection and testing.
- TWI: Training & Examination Services
- Provides training courses in welding and non-destructive testing at locations around the world.
- Welder Training and Testing Institute
- Institution for learning the newest welding technologies. Courses for all aspects of welding, for the beginner to the professional. Also does weld testing for critical welding applications. Allentown, Pennsylvania.
- Welding Technology Institute of Australia
- Welding and joining technology support centers for Australian industry.