Designed to avoid destructive axial stress in weldedjoints.

Among the many applications is expanding U-tubes inwelded joints on thick tube plates, whereby the tubes are expanded after welding.

Automatic axial movement of the expander housing during expansion, ensures that tube elongation developed during this operation, is on the rear side of the tube plate.

The TECO SL Step Expander automatically smooths out the overlapping during expanding.

The range covered is for tubes from 3/8" to 1 11/32”  I.D.
and tube sheets thickness 2 9/16” to 27 1/2” (65 to 698.5 mm).

On request the expander can be supplied with Teflon bushings to prevent tube damage.

  
This model expander is specially designed for thick tube sheets.

Automatic overlapping of the rolling in stages.

For tubes 3/8” to 1 3/8” (9.5 mm to 34.9 mm) I.D.
and tube sheet thickness 2 1/2” to 27 1/2” (63.5 mm to 698.5 mm).

Model: CH 800 AND CH 1200 Series

A special line of expanders to expand thin wall tubes, titanium, stainless steel and other high quality metals.

Available with special thrust collars, to eliminate the possibility of the tube being drawn up inside the thrust collar.

Ideal for expanding tubes in thin tube sheets.

For tubes from 1/2” to 4 1/2” (12.7 mm to 114.3 mm) O.D..

Available with adjustable collar.

Ideally suited for tube rolling with minimum travel of mandrel.

Expander mandrel is retained at rear to shorten mandrel length and
to allow use near tube bends or I.D. fixed tubes.

Specially designed to enlarge the ends.

For non ferrous or thin steel tubes so that another tube of the
same diameter can be inserted and welded or soldered.

All tube sizes covered.

Available with adjustable collar.

Designed for expanding core seals, according to DIN 443,
in motor housings, cylinder heads and other caste parts.

Read more for datasheet