Type 01A Flange

The UNI 2276 standard (now obsolete) concerned steel flanges for piping, mainly used in industrial and civil systems.
It was an Italian standard specifying the geometric, dimensional, and technical characteristics of flanges.

Characteristics of UNI 22-76/77/78 Flanges:

• Carbon steel flanges used in civil and industrial systems (water, air, steam, gas, etc.);
• Nominal pressure ratings include PN 6, PN 10, PN 16, PN 25, PN 40;
• Nominal diameters range from DN 10 to DN 2,000. However, the most commonly used sizes, due to their lower thickness compared to EN standards, range from DN 600 to DN 1600;
• Materials are generally unalloyed or low-alloy steels.