Introduction
High-pressure flange fittings are critical components in aerospace fluid systems, handling fuel, oxidizers, and gases under extreme conditions. For procurement engineers, sourcing these fittings requires rigorous attention to standards, materials, and quality assurance. This guide outlines the key factors to consider when purchasing high-pressure flange fittings for aerospace projects.
Standards to Confirm
Aerospace fittings must comply with recognized international standards. For high-pressure flange fittings, the following standards are typically required:
- ASME B16.5 – Pipe Flanges and Flanged Fittings for pressure-temperature ratings.
- ASME B16.48 – Line Blanks for flange sizes (if applicable).
- ASTM A182 / A105 – Material specifications for forged or carbon steel fittings.
- AMS specifications (e.g., AMS 5643 for stainless steel) for aerospace-grade materials.
