What are the standards for sanitary fittings?

The standards for sanitary grade fittings are as follows:

1. Production standards for sanitary fittings: Manufacturing adopts ISO, GB, DIN, 3A, IDF, etc; General industrial pipe fitting standards: GB (National Standard), JIS (Japanese Standard), DIN (German Standard), ASTM/ASME (American Standard) and other standards. GB is a mandatory national standard, while GB/T is a recommended national standard ("T" indicates recommendation).

2. The goal of the 3A standard committee for sanitary fittings is to prevent contamination and ensure that all product contact surfaces can be mechanically or manually cleaned and inspected.