MECHANICAL JOINING

THE SUPERIOR METHOD FOR JOINING TUBING TO FLANGES AND FITTINGS.

The best way to join tubing to flanges and fittings without the need to weld is mechanical joining. Mechanical joining is often referred to as “swaging”, “expanding” and “joining”. The required tools are sometimes called “swagers”, “tube expanders” and “expanders”.
Manufactured by Elliott Tool Technologies, mechanical joining tools create secure, leak-proof joints between ductile tubular products and fittings. A mechanical joint can withstand over 20,000 pounds of hydro-static pressure.
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ADVANTAGES

SUPERIOR JOINTS

ROLL TO A TORQUE OR DIAMETER SPEC

MATERIALS

EFFICIENT & EASY-TO-USE

APPLICATIONS & CASE STUDIES

OPERATING PROCEDURES

0% Expansion

The tube is inserted into the flange and the mechanical joining tool is inserted into the tube.
Step 1 in mechanical joining swaging procedure
 

25% Expansion

When the tube has been rolled to roughly 25% of the total expansion required, the tube will make metal-to-metal contact with the flange.
step 2 in mechanical joining process

50% Expansion

At this point the tube metal has begun to flow into the grooved serrations of the flange.
step 3 in mechanical joining process

100% Expansion

Grooved serrations are now completely filled and the tube metal has flowed to the point of least resistance beyond the flange resulting in a mechanically formed joint that will not leak, vibrate loose or pull apart.
mechanical joining tube expanding procedure

TECHNICAL REFERENCE AND DOWNLOADS

View the Mechanical Joining Tool in action: