Introduction
High-pressure flanges are critical components in industries such as oil and gas, petrochemical, power generation, and marine engineering. They ensure leak-free connections in piping systems operating under extreme pressures and temperatures. For procurement engineers, selecting the right flange involves more than matching dimensions—it requires understanding material grades, manufacturing standards, and quality assurance. This guide provides a practical framework for sourcing high-pressure flanges, drawing on industry best practices and technical requirements.
Standards to Confirm
When specifying high-pressure flanges, compliance with international standards is non-negotiable. Common standards include:
- ASME B16.5: For flanges up to 24 inches and pressure classes 150 to 2500.
- ASME B16.47: For larger diameters (26 to 60 inches) in Series A and B.
- API 6A: For wellhead and tree equipment, often used in high-pressure oil and gas service.
