ANSI B16.5 vs B16.47: Choosing the Right Flange Standard

Introduction to ANSI Standard Flanges

Complete line of ANSI B16.5 and B16.47 flanges in carbon steel, stainless steel, and alloy materials for industrial piping.

In this article, we explore the key characteristics, standards compliance, and industrial applications of ANSI standard flanges.

For detailed technical information, visit ASME standards.

Applications and Industry Use

ANSI Standard Flanges serve critical roles across multiple industries. Whether in oil and gas production, chemical processing, power generation, or specialized manufacturing, these components provide essential connections.

Oil & Gas Sector

Used throughout production, refining, and distribution systems for reliable pressure vessel and piping connections under extreme conditions.

Chemical Processing

Essential components in chemical manufacturing where material compatibility and pressure containment are paramount to process safety.

Power Generation

High-performance applications in steam generation and water circulation systems requiring maximum reliability and longevity.

Standards and Compliance

All ANSI standard flanges must meet relevant industry standards to ensure safety and reliability. Primary standards include:

• ASME B16.5 - Pipe Flanges and Flanged Fittings
• ANSI B16.47 - Large Diameter Flanges
• API 605 - Flange Qualification Standards

Ensure all products you specify include proper certification and traceability. Learn more at ANSI.org and ASME.org.

ANSI Standard Classification

ANSI B16.5 defines pressure classes 150, 300, 600, 900, 1500, and 2500 psi with corresponding dimensional and material requirements appropriate for each rating.