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.
Although DIN 2501 was officially superseded by EN 1092-1 in the European Union, DIN flange callouts remain ubiquitous in existing plant maintenance specifications and international engineering drawings.
DIN 2501 is the legacy German Institute for Standardization standard for mating dimensions of steel pipe flanges in PN 6 through PN 40.
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.
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