Tag: ANSI

Understanding Flange Pressure Ratings Flange pressure rating indicates the maximum pressure a flange can safely withstand at a specific temperature. Selecting the correct rating is critical for system safety and compliance. ASME Pressure Classes Class Max Pressure (bar) Max Pressure (psi) Typical Applications Class 150 19.6 285 Low pressure water, air, general service Class 300 […]

Mastering ASME B16.5 Flange Dimensions A flange size chart ensures proper fit-up, bolt alignment, and gasket seating. Misreading tables leads to costly mistakes. Key Dimension Parameters NPS Nominal Pipe Size (not actual OD for 14 inch+) Class Pressure rating: 150, 300, 600, 900, 1500, 2500 Outside Diameter Overall flange diameter Thickness Flange thickness at hub […]

Understanding Flange Standards Comparison Between ASME, API, ISO, and PED, which standard is strictest? The answer depends on what you measure. PED: Europe Legal Mandate The Pressure Equipment Directive (2014/68/EU) is an EU legislative directive for pressure equipment over 0.5 bar. Unlike voluntary ASME/API standards, PED is a regulatory mandate requiring CE marking for EU […]

Why Proper Flange Bolt Torque Prevents Costly Leaks Incorrect bolt torque is a leading cause of flange joint failures. Applying correct torque ensures proper gasket compression and prevents shutdowns and safety incidents. Target Torque Calculation Formula ASME PCC-1 Appendix K formula: T = K x D x F / N T = Target torque per […]

# Flange Industry Standards and Quality Control: A Comprehensive Overview Published: April 12, 2026 | Category: Industry Standards Understanding flange industry standards and quality control requirements is essential for ensuring safe, reliable piping systems. This guide covers the major international standards, certification requirements, and quality assurance practices for flange manufacturing. Major International Flange Standards ASME/ANSI […]