Specification 6A is available on API’s new Compass platform. A Compass subscription gives you organization-wide, 24/7 access to all of the API standards and specifications you need to ensure …

NOTE 2 API 6A requires the manufacturer to mark only the H2S partial pressure and not the other parameters specified in NACE MR0175/ISO 15156 to define the environmental limits for H2S service.

This document was produced under API standardization procedures that ensure appropriate notification and participation in the developmental process and is designated as an API standard.

API 6A standards are a set of guidelines developed by the American Petroleum Institute (API) specifically for the design, material selection, manufacture, and testing of wellhead and Christmas …

Specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and …

Oct 9, 2025 · Explore API 6A flange sizes and dimensions with detailed charts. Includes specs for 2000–5000 PSI flanges, materials, and oil & gas applications.

Nov 11, 2025 · API 6A valves are specifically designed for the oil and gas industry, mainly for wellhead and Christmas tree applications. They are engineered to handle high-pressure, high-temperature …

API Specification 6A is the recognized industry specification for wellhead and tree equipment that was formulated to provide for the availability of safer, dimensionally and functionally interchangeable …

Nov 1, 2018 · Find the most up-to-date version of API SPEC 6A at GlobalSpec.

6A training is a highly customizable course to meet tailored learning needs. Choose from a menu of modules focused on Design, Material, or Quality Control requirements.