Welding South Africa: The Complete Guide to Courses, Careers, Certification and Red Seal Pathways Quick Answer: What Is Welding? The Simple Answer for South African Learners and Employers Welding is the process of joining metal parts together using heat, pressure, filler material or a combination of these methods. In South Africa, welding is one of the most important practical skills in engineering, fabrication, construction, manufacturing, transport, mining, marine work, mai