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The distinction between DIN flanges and ANSI flanges comes from the application. The American standard is ANSI and the European standard is DIN, although companies often use them differently. North American flanges are measured in millimeters and referred to as ANSI, the American National Standards Institute.

The DIN 2632 Flange Dimensions range in sizes between 15 NB to 1200 NB or from DN10 to DN5000....We Supply DIN 2632 PN16 Flanges worldwide, Stockist of Flange C DIN 2632. SpecificationsDIN 2632 FlangesSize range1/2" up to 48" (15 NB to 1200NB)14 more rows

Flange Class There are seven Class 150#, 300#, 400#, 600#, 900#, 1500#, and 2500#. The higher the flange ratings, the heavier the flange and can withstand higher pressure and temperature. So, when the temperature goes up for a given material, the maximum allowable pressure goes down, and vice versa.

The Difference Between ANSI and DIN DIN is most commonly specified in European countries, while ANSI is usually specified in the United States. Therefore, the majority of factories in North America are likely to have piping that is ANSI certified, while similar plants in European countries have DIN piping.

The table demonstrates that DIN requires stricter tolerance than ASME. For the ½-inch drive, DIN allows 0.11 tolerance while ASTM allows 0.218, resulting in a discrepancy of 0.108mm. In other words, DIN and ANSI impact sockets are not the same and their differences should be carefully noted.

DIN sets industry standards for quality assurance and safety, including flange materials requirements and pressure and temperature rating. While DIN flanges are less common in the United States, imported systems and equipment or international maritime vessels may require these metric pipe flanges and parts.

The Difference Between ANSI and DIN DIN is most commonly specified in European countries, while ANSI is usually specified in the United States. Therefore, the majority of factories in North America are likely to have piping that is ANSI certified, while similar plants in European countries have DIN piping.