Standard Specification

DIN 2501 Flange Standard — Legacy German Specification Guide

DIN 2501 legacy German flange standard reference: PN6, PN10, PN16, PN25, PN40 dimensions, bolt circles, mating compatibility with EN 1092-1. Quote in 30 min.

Standard Overview & Scope

Although DIN 2501 was officially superseded by EN 1092-1 in the European Union, DIN flange callouts remain ubiquitous in existing plant maintenance specifications and international engineering drawings.

Official Standard Scope

DIN 2501 is the legacy German Institute for Standardization standard for mating dimensions of steel pipe flanges in PN 6 through PN 40.

Covered Size RangeDN 10 to DN 1000
Pressure Ratings / ClassesPN 6, PN 10, PN 16, PN 25, PN 40

Related Standard & Material Guides

Standard Specification FAQs

Q: Can an EN 1092-1 flange bolt directly to an existing DIN 2501 flange?

A: Yes. For DN 10 through DN 600, EN 1092-1 maintains identical bolt circle diameters, bolt hole counts, and pitch dimensions as legacy DIN 2501.

Flange RFQ Form

Request Quote for DIN 2501 Flange Standard

Get full dimensional charts and written quotation in 30 minutes.

Get in touch

Fill this form and get a quote in 30 minutes — guaranteed

Let our experts take over from here!

🏆 ISO 9001:2015
🤝 ONGC • Tata • L&T
📜 MTC 3.1 Provided
⚡ 30 Min Response