描述
    
The pressures are calculated for grade En 1.4307 at 20o C. 
Full-face gasket with thickness>=1,5 mm. Gasket factor 4,94 and design seating stress 90 MPa. 
Se also Appendix H in EN 13445-3. 
Note. To obtain the pressure ratings in the table the collars are dimensioned for special flanges 
that have less bore diameter and chamfer, and the other measures are at least the same 
as corresponding EN 1092-1 flan