The implementation standards of Stainless Steel Flanges mainly include the following:

‌The main implementation standards of stainless steel flanges include international standards (such as ANSI standards, DIN standards, JIS standards) and domestic standards (such as GB standards, HG standards).

Specifically:

International standards:

ANSI standards: flange standards formulated by the American National Standards Institute, belonging to the American system.

DIN standards: flange standards formulated by German industrial standards, emphasizing the European pipe flange system.

JIS standards: flange standards formulated by Japanese industrial standards, generally only used for public works in petrochemical plants.

Domestic standards:

GB standards: that is, national standards, the current ones are the new national standards in 2019, mainly divided into PN series (European system) and Class series (American system), covering multiple nominal pressure levels, such as PN2.5 to PN400 and Class150 to Class2500.

HG standards: Ministry of Chemical Industry standards, belonging to industry standards, mainly used in the chemical industry, its flange system is also very comprehensive, covering the two major systems of Europe and America.

In addition, stainless steel flanges also have Italian standards, British standards, and other standards such as the Ministry of Machinery standards and pressure vessel standards. These standards may vary depending on specific application scenarios and needs.

When selecting stainless steel flanges, you should choose according to specific working pressure, temperature, medium, and usage scenarios, combined with corresponding implementation standards to ensure the quality and safety of the flanges.