The most frequently asked questions regarding flanges and flange fittings have to do
with how flanges fit on specific steel tube and steel pipe ends for angle face rings, stub ends and other specific flange fitting requirements, in addition to how the actual flange connection is made for each tube flange and pipe flange repair application. (see illustration below)

Contact The Marzolf Company, or call us at 715-426-5705, with your pipe flange & tubing flange questions.

ANGLE FACE RING – 
Pipe or tube fits inside to form male/female type fit.

angle face ring

Angle Face Ring

TYPE A STUB END – 
Radius Filet
Most widely used stub end. Designed to be used with lap joint flanges.

type_a

STUB END – 
Mates up flush with pipe or tube.

stub end

TYPE B STUB END – 
Lap Joint
Designed to be used with slip-on flanges.

type_b

TYPE C STUB END – 

An economy stub end for use where square inside corner and heat treatment after forming are not required. For use with back up flanges.

type_c

RADIUS – 
Proper sized radius on inside diameter of backing ring to accommodate radius on filet of type “A” stub ends and Polyethelyne pipe.

radius

CHAMFER – 
45° angled radius on inside diameter of flange to assume a flush fit on type “B” and “C” stub ends or angle face rings.

chamfer

MEASUREMENTS – 

  • ID – Inside Diameter
  • BC – Bolt Circle
  • OD – Outside Diameter
  • – Thickness

measure