1、Raw Materials:304 and 316L are two commonmaterials, both are from large Chinese steel plants such as
Baogang,Tiangang,Jiuli etc..
2、Fineness:Strictly according to tolerance standards such as 3A、DIN、SMS、BS etc..
3、Surface:Food Grade Ra≤0.8um Pharmaceutical Grade Ra≤0.4um or lower
4、Pressure: Detailed see Page305-306, attached table
5、Sealing Parts: Their health index should reach national standards,and are tested by the authorityEPDM、VMQ、NBR、FPM、PTFE.