Beveling and Flange Facing

Tri Tool® ID mounted end prep equipment utilizes an expandable, self–centering mandrel system which mounts in the open end of
a tube or pipe. Jaw blocks, corresponding to the size of pipe being worked on are placed on the mandrel. When a draw rod is tightened, jaw block bases are drawn up an inclined ramp, expanding the jaw blocks against the inside bore of the pipe. This provides a solid, torque accepting grip for accurate machining operations.

Some tools can be fitted with optional cutting heads (like Single Point Kit) which expand the cutting range to cut larger pipes
or perform special additional machining operations.

an elbow mandrel head being mounted
in a fitting and being aligned with a dial indicator for maximum precision

The illustrations below show the four basic mounting systems employed by Tri Tool® ID mounted equipment
to provide secure positioning for precision beveling or machining.

Specialized mounting systems can be provided, in addition to those shown, to perform specific cuts or for unique machining operations.

Std Mandrel

(Std) Mandrel

The standard ID mandrel works on the simple principal of tightening
a threaded draw rod that pulls an end plate. The end plate drives several blocks up ramps, expanding the ramp blocks into the ID bore. This locates the tool both centered and square to the run of pipe.

Elbow Mandrel

Where the curves of a tee or elbow prevent the use of ramp blocks,
an elbow mandrel grips the fitting by means of a series of contact pins. The pins slide in and out from the center of the head. A threaded push rod with a tapered end presses the pins outward for engagement with the ID bore.

For machining fittings, an elbow mandrel is available that uses expanding pins to provide positive mounting in a short depth, just inside the pipe
or fitting bore.

Elbow Mandrel
Miter Mandrel

Miter Mandrel

Miter mandrels compensate for misalignment, or are used in irregular openings. Individual, threaded contact pins center and secure the head. A ball & socket system with bolts on the face of the head adjust angular offset up to 5º in all direction.

Miter mandrels angle the machine to produce a precision bevel
in a plane which is not perpendicular to the center line of the pipe.

Sleeve Mandrel

The nylon sleeve mandrel is used to protect thin wall pipe from marring. A fullcontact expanding sleeve is pressed against the bore by tightening a threaded rod. The rod draws back on an endplate, pulling the sleeve against a tapered core, simultaneously rounding the pipe.

Sleeve Mandrel

Specialized mounting systems can be provided, in addition to those shown, to perform specific cuts or for unique machining operations.

Special full contact mandrels are available which do not mar the bore while countering out–of–round conditions, perfect for thin wall pipe. For out–of–round pipe, tracking modules may be used to prep the end of the pipe with a bevel that is uniform to the ID bore.

Model 212B BEVELMASTER with the specially designed bolton style mandrel is perfectly suited for this four cutting bit trepanning operation

Single point machining

Single point machining allows more flexibility of cut for complex machining operations and compound bevel angles.

Portable beveling machinery produces bevel angles primarily through the use of form tool bits that have angled cutting edges. Form tool bits can only generate bevel angles predetermined by their cutting surface.

Single point machining utilizes generic cutting bits that produce bevels based on the feed angle, and direction of the bit holder.
This permits the production of basic as well as compound bevel profiles with the same bit.

This capability provides an invaluable means for accurate weld prep machining to meet the most demanding specifications and allows
the machinery to perform reliably on the widest range of pipe materials and alloys. Power for the machines is provided by a variety of dependable sources.

versatile Model 212B BEVELMASTER™ with Single Point module generating a precision compound bevel on heavy wall pipe

Single point kits have been designed
to provide extended cutting capabilities for the Model 212B, 224B, and 230B.

This means you can perform a much wider variety of end uses with the same equipment without the need
to buy additional tools.


handy model 212B on the job performing a weld preparation bevel on stailess steel pipe

— for 4' to 24' pipe range

Flange Repair and Maintenance

The rugged Model 442F has been designed to machines perfect sealing surfaces on flanges ranging from 14" (355.6mm) ID through 42" (1066.8mm) OD. The machining range can be extended (with an optional extension kit ) to 73.0" (1854.2mm) OD to handle your largest flanges with ease.

Special flange facing modules are available for some beveling tools to restore the surface of damaged or worn flange sealing faces.

The Flange Facing Kits for the Models 204B, 206B, and 212B are designed to allow these proven portable beveling tools to be converted to dedicated flange facers.