Welding
- 1
 - 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.
 
- 3
 - TWI: Training & Examination Services
 - Provides training courses in welding and non-destructive testing at locations around the world.
 
- 4
 - 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.
 
- 5
 - Welding Technology Institute of Australia
 - Welding and joining technology support centers for Australian industry.
 
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