Flanges are usually used to connect valves to pipelines, making it easier to disassemble and maintain. There are many common flange standards, and the flanges within the same standard can be flat (usually cast iron, ductile iron) or convex (usually cast steel and stainless steel). The following is a reference table of key flange dimensions to help you determine the standard used.

"PN" stands for pressure nominal and prefixes the pressure rating. For example, PN16 flanges are designed for pressures up to 16 bar. Typical ratings include

PN6, PN10, PN16, PN25, PN40, PN64, PN100.

On the contrary, the American ANSI standard refers to the pressure/temperature grade, called "grade".

Keywords：

ductile,flange,reference,pipelines

RELEVANT NEWS

2026-07-27

Enhancing Efficiency with Precision Engineering of 304 and 316 Stainless Steel So Flange

Enhancing Efficiency with Precision Engineering of 304 and 316 Stainless Steel So Flange Table of Contents Introduction to Stainless Steel So Flanges What is a So Flange? The Importance of Material Selection Properties of 304 Stainless Steel Properties of 316 Stainless Steel Applications of 304 and 316 Stainless Steel So Flanges Precision Engineering Techniques Enh

More+

2026-07-22

Understanding Stainless Steel So Flanges: Essential Insights for Professionals

When it comes to hydraulic systems and mechanical hardware, the role of stainless steel so flanges cannot be understated. These flanges serve as vital connectors in piping systems, ensuring a secure and leak-resistant fit for various applications. Made from durable stainless steel, these components are particularly valued for their resistance to corrosion and their ability to withstand high pressu