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RAISED FACE HEIGHT

For the height measures H and B of all described dimensions of flanges on this website, with exception of the Lap Joint Flange, it is important to understand and remember the following:

In Pressure Classes 150 and 300 Lbs, the height of raised face is approximately 1.6 mm (1/16 inch).
In these two Pressure Classes, almost all suppliers of flanges, show in their catalog or brochure, the H and B dimensions including the raised face height. See figure 1 on the image below.

Raised face height

In Pressure Classes 400, 600, 900, 1500 & 2500 Lbs, the height of raised face is approximately 6.4 mm (1/4 inch). In these Pressure Classes, most suppliers show the H and B dimensions excluding the raised face height. See figure 2 on the image above.

On this website you will find two dimensions. The top row dimensions are excluding the raised face height, and in the bottom row the dimensions are including the raised face height.

Dimensions Slip On flanges and Stud bolts according to ASME B16.5

Slip-On flange

IMPORTANT  Information  

Pressure Class 150 300 400 600 900 1500 2500
Diameter - A - - - - - - -
Diameter - D - - - - - - -
Thickness - B - - - - - - -
Diameter - G - - - - - - -
Diameter - K - - - - - - -
Height - H - - - - - - -
Bolt Holes - - - - - - -
Diameter - L - - - - - - -
 
Stud bolt
Dia x Length		 - - - - - - -
select a diameter...

Dimensions are in millimeters unless otherwise indicated.
The length of the stud bolt does not include the height of the chamfers (points).

DIMENSIONAL TOLERANCES OF SLIP ON FLANGES ACCORDING TO ASME B16.5

Dimensional tolerances are in millimeters unless otherwise indicated.

OTHER FLANGES DIMENSIONS ACCORDING TO ASME B16.5
Welding Neck Flange | Slip On Flange | Socket Weld Flange | Lap Joint Flange | Threaded Flange | Blind Flange