Quick Answer: How Do You Become a Coded Welder in South Africa? To become a coded welder in South Africa, you need to build strong welding fundamentals, choose the correct welding process, practise the required positions, understand Welding Procedure Specifications, prepare for practical testing, and pass a coding test linked to a specific process, material, joint, position or standard. In plain English: A normal welder can weld. A coded welder can prove that their weld meets