The Welding Institute
Provides services to industry and individuals worldwide. It encompasses a professional engineering institution, an international training and certification activity, and a large consultancy R&D establishment dedicated to transferring technology to industry. http://www.twi.co.uk/
Edison Welding Institute
A non-profit engineering and technology resource organization serving the welding and joining needs of industry. Expertise in processes from arc welding to adhesive bonding and materials ranging from metals to plastics. http://www.ewi.org/