What's the outer diameter of the DN100 standard flange, please? Galvanized pipe with DN100
To see what standard, GB Hb, American Standard are not the same
The standard of the mechanical department is 215MM, and the chemical department is 220MM. They are all in common use
There is a pressure level and a standard system:HG20592-97's pressure levels are as follows0.25MPa, 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa2102102202202354.0MPa, 6.3MPa, 10MPa, 16MPa, 25MPa235250265265300
Flange outer diameter 220mmBolt hole distance 180mmBolt diameter 18mmFlange thickness 22mm
