Typically every 5–7 years. The 6th Edition was released in 2016. The 7th arrived in 2022–2023. Amendments (corrigenda) are issued annually.
Welding standards have been updated to reflect tougher non-destructive testing (NDT) criteria. Fabricators must prove welder qualifications under updated ISO standards, and visual inspection protocols before, during, and after welding are more explicitly defined. Key Sections Breakdown Typically every 5–7 years