Weld Lab (Pty) Ltd is a manufacturing company, founded by entrepreneur Brian Carolissen on 12 March 2017. The company was started when the owner left his previous employment as a welder because he was sick and tired of seeing poor quality over priced products flooding the South African market and believed there had to be a better way forward. We offer the following services: Welding Services. Construction of Customized Pergolas. Design and Product Developments Services. Cnc Milling 3D Printing Paving & Construction.