Introduction
High-pressure flanges and fittings are critical components in aerospace fluid systems, where they must withstand extreme pressures, temperatures, and corrosive media. For procurement engineers and EPC buyers, selecting the right parts involves more than comparing price lists. This guide covers key technical requirements, verification steps, and documentation needed to ensure reliable performance in mission-critical applications.
Standards to Confirm
Aerospace-grade flanges and fittings are typically manufactured to international standards that define dimensions, material properties, and testing protocols. Commonly referenced standards include:
- ASME B16.5: Pipe flanges and flanged fittings for pressure-temperature ratings.
- ASME B16.47: Large diameter steel flanges (for larger line sizes).
- ASTM A182 / A105: Material specifications for forged or rolled alloy and stainless steel pipe flanges.
- MIL-STD or customer-specific specs: Many aerospace projects have proprietary requirements beyond commercial standards.
