Note: If your company is actively manufacturing or operating wellhead equipment, utilizing an enterprise subscription via Techstreet or S&P Global ensures your entire engineering team has synchronized, legal access to the active edition and all subsequent addenda. Conclusion
in the petroleum and natural gas industries. Released in November 2018 and effective as of November 1, 2019, this edition introduced major structural and technical updates to standardize industry practices and improve safety. American Petroleum Institute | API Official Access & Downloads api specification 6a 21st edition pdf link
Purchase the official 21st edition or access it through an employer’s subscription. If budget is a constraint, review the API 6A specification summary (free) on the API website to understand scope before buying. For manufacturing or certification, you must hold the official version to comply with API Monogram requirements. Note: If your company is actively manufacturing or
: Mandrel hangers and slip hangers used for casing and tubing suspension. American Petroleum Institute | API Official Access &
Official platforms automatically push critical addenda and errata directly to your account, ensuring your engineering team is never working off stale data. Authorized Platforms to Get the Official API 6A PDF