How long are welder qualifications generally valid before needing renewal?

Welder qualifications are typically valid for a period of two years before they require renewal. This timeframe is established to ensure that welders maintain their skills and stay updated with current practices and standards in welding. The renewal process often involves a practical reevaluation, which serves to confirm that the welder can still perform welding tasks to the necessary specifications and craftsmanship standards. This two-year validity also aligns with industry practices, providing a balance between ensuring quality and allowing for technological advancements and skill development.