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Technical Requirements for API 6A/16A
API certification requires strict adherence to PSL (Product Specification Levels).
| Requirement | Detail |
|---|---|
| PSL 1-4 | Defines the level of testing (PSL 4 being the highest). |
| Material Class | AA (General) to HH (Sour/Highly Corrosive). |
| Temperature Class | L (-46°C) to U (121°C). |
Every API forging must undergo Charpy V-Notch impact testing to prove it won't shatter in cold climates. Additionally, "Tension Testing" on specimens taken from the actual forged body ensures that the part meets the minimum yield and tensile strengths required for the specified pressure rating (e.g., 10,000 PSI).
Corporate Culture and Development Philosophy
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Development Conceptscientific and technological innovation as the driving force. -
Quality PolicyPeople, integrity, truth-seeking, innovation -
Core ValueCommon development to achieve symbiosis and win-win.
Procurement Tips for Oilfield Engineers
- Know Your PSL: Don't over-specify; a PSL 1 part is sufficient for many surface applications, while subsea components usually require PSL 3 or 4.
- Check the PR (Performance Rating): Ensure the forging is tested to the correct PR level (PR1 or PR2) to match the valve or wellhead’s design.
- Verify Heat Numbers: Ensure the physical part is stamped with a heat number that matches the Mill Test Report exactly.
Advantages of API-Standard Forgings
| Advantage | Business Benefit |
|---|---|
| Global Acceptance | Parts can be used by major oil companies (Aramco, Shell, etc.). |
| Proven Reliability | Minimized risk of environmental disasters and blowouts. |
| Traceability | Full history of the part available for audits and insurance. |
Primary Applications
| Application | Usage Context |
|---|---|
| Christmas Trees | Main valve and fitting assembly for well control. |
| Casing Heads | Supporting the weight of the drill string in the wellbore. |
| Choke & Kill Manifolds | Controlling well pressure during drilling emergencies. |
- Q: Does API certify the forge or the part?
- A: API certifies the manufacturer's quality system (API Q1) and the product design/manufacturing process (e.g., API 6A). A "Certified" part is one made by an API-licensed facility under these rules.
