Tube End Forming and Special Purpose Machines

When a special purpose machine is needed

When the part needs more than standard closing, grooving or cutting, for example a bored end, an arc-milled saddle for tube-to-tube joints, both ends worked at once, or several operations combined in one machine, TONG DA designs a special purpose machine to the drawing. Design, build and trial run all happen in our Tainan plant.

Current models

WHC-0301M hydraulic fine boring machine: precision bore at the tube end
WHC arc milling machine (horizontal): arc-shaped end for tube-to-tube joints
WHC-88-29 double-end machine: both tube ends worked simultaneously

Typical combinations

Closing + inner grooving, grooving + roll cutting, pressing + edge folding, lock nut + inspection. TONG DA has designed complete lines for gas springs, shock absorbers, torsion beams and furniture tubing.

How to start

Send the finished-part drawing, material, annual volume and current process; TONG DA evaluates and proposes a machine and trial plan.

Other names by market

USA / UK / India: fine boring machine, tube ID boring machine, tube end boring. Turkey: boru içi delik işleme makinesi. Brazil: mandrilhadora de tubos. Spain / Mexico: mandrinadora de tubos. China: 精镗机、镗孔机、管端内孔加工. Taiwan: 精鏜機、管端內徑精鏜、鏜孔機.

Shock Absorber Manufacturing Machines | Cylinder Bottom Closing, Grooving, Valve Riveting and Piston Rod Preparation

Machines for shock absorber and damper cylinders: cold spin closing of the cylinder bottom (TD-31050, TD-382), roll grooving, inner grooving, special machines for rebound valve nut tightening and base valve spin riveting, and piston rod preparation through partners. Samples on your tube first.

WHC-0301M Hydraulic Fine Boring Machine | Precision Bore at the Tube End

The WHC-0301M hydraulic fine boring machine bores the end of a metal tube to an accurate diameter and smooth finish, removing mill tolerance and the internal weld bead so a bearing, guide bush, piston or mating tube fits correctly. Hydraulic clamping and feed; the boring tool is changed to suit the target bore. Used on gas spring and hydraulic cylinder tubes, drive shaft tubes, fitness equipment and furniture sleeves. Sold and serviced by TONG DA.