A 6G TIG & Arc (SMAW/GTAW) Welder performs high-precision welding on pipes and pressure vessels in fixed, angled (45-degree) positions, typically requiring 3-10+ years of experience in oil & gas, refinery, or structural projects. They must pass rigorous 6G certification tests, interpret blueprints, and ensure quality compliance using GTAW for roots and SMAW for fill/cap passes.