1) Standard working pressure:

A) DN50-DN450: 1.0MPa

B) DN500-DN600: 0.6MPa

2) Top flange conforms to DIN ISO5211part 1

3) Bolt circles conforms to DIN 2501, PN6/ 10/ 16, PN25, PN40, ANSI 150

4) Applicable scope: Shipping, petroleum, natural gas, construction, fire fighting, metallurgy, sewage disposal, water-quality treatment systems and municipal water projects.