Upon detonation by means of the trigger, the solid powder reacts instantaneously such that the bent pipe is restored into a circular pipe and at the same time the diameter of the bent pipe is expanded.

The masts of certain lamp posts are made of folded tube.

A radiant tube made of refractory metal is provided with at least one bent tube (3A (3C)) which connect straight tubes (2A, 2B (2C, 2D)).

This is a little bendy tube that goes into the top of the whole tower assembly.

The uncut portion forms a tab (28) that is integral with the sealed end (22) of the tube (10) while the cut portion forms a retaining ring (26) that may be used to hold the tube in a folded position.

A flow tube (3) composed of a bent tube having a shape symmetrical with respect to a first axis is supported at its both ends by supports (8, 8) having an outlet and inlet respectively.

This design of the walking aid places the supporting point of the walking aid further forward on the floor, giving to the user a greater feeling of security and lengthening his steps.

The tube is bendable and rotatable.

The tube (1) is also very flexible in bending, and has a small wall thickness.

Upon detonation by means of the trigger, the solid powder reacts instantaneously such that the bent pipe is restored into a circular pipe and at the same time the diameter of the bent pipe is expanded.

And the front tube (18) is folded towards the rear wheel (41).

The spring is corrosion resistant and helps to prevent kinking of the tubing when the tubing is bent.

The inner tube is brought into contact with the outer tube and the harness when the outer tube is bent, and partially transmits an elastic force of the outer tube to the harness.

423.121.2 - the tube is bent or folded, as opposed to straight

423.121.1 End-blown straight trumpets - The tube is neither curved nor folded.