Since 1924, the American Petroleum Institute has been a cornerstone in establishing and maintaining standards for the worldwide oil and natural gas industry. Our work helps the industry invent and manufacture superior products consistently, provide critical services, ensure fairness in the marketplace for businesses and consumers alike, and promotes the acceptance of products and practices globally.
Standards enhance the safety of industry operations, assure quality, help keep costs down, reduce waste, and minimize confusion. They help speed acceptance, bring products to market quicker, and avoid having to reinvent the wheel every time a product is manufactured.
To see our recently published documents, addenda and erratas please click here.
Visit the API Publications Store to purchase copies of our standards. Our standards are designed to assist industry professionals improve the efficiency and cost-effectiveness of their operations, comply with legislative and regulatory requirements, safeguard health, and protect the environment.
API provides the public with online access to over 200 key industry standards that are cited in Federal regulations via the IBR (Incorporated by Reference) Reading Room.
API receives numerous inquiries related to its standards, specifications, recommended practices, technical reports and codes (i.e. documents).
API’s Standards Committees are made up of subcommittees and task groups comprised of industry experts who develop API standards.
Information on the API Standards Program
Each year, API updates current standards, creates new standards and adopts existing standards.
Addenda (amendments) and errata for published API standards are available via the API Publications Store.
API Global Webcasts and Engineering Partnership Program
API Standards Policy and Procedure Documents
The Intellectual Property (IP) Rights and Usage Policy provides information on API's copyrights and trademarks, and outlines the process of requesting to reproduce API-copyrighted material.