How to bend profile pipe

The profile tube has a non-familiar round cross section, but a rectangular, square or oval. In everyday life, such pipes are used for the manufacture of furniture, construction of scaffolding, mounting fences, arbors and greenhouses.

Often the need to bend the profile tube. With a flexible tube with a non-standard section, there is a chance of its damage - it can flatten. The appearance of cracks and fuss shows that the material is spoiled. The use of a special machine allows you to bend the pipe without damage. Performing work with pipe bending, take into account the following parameters:

the magnitude of the pipe cross section;
wall thickness;
material from which the pipe is made;
bending radius.

The machine for flexible profile pipes is a fairly expensive tool, and if the amount of work is small, it is better to apply other ways. Hand-made pipe bender is cheaper, but when used will require applications from you significant physical efforts.

Hydrostatic pressure inside the pipe protects it from damage. Operating procedure:

One end of the pipe is put on a special plug.
Fill the pipe with water.
Secure the second plug.
Bend the pipe with the machine starting from the center of the bend.

For flexible profile pipe, you can use a grinder and welding.

Calculate the desired rounding radius.
Diamond circle apply transverse rods on three sides of the profile.
Bend the pipe.
With the help of the welding machine, the feedback is brevily.
Treat and stabbing welding locations.

When working with a grinder, follow the security technique - use the casing for disk and protective glasses.

Another method is bending with a springs of a square cross section. For the manufacture of spring, use a timber and steel wire with a thickness of 2-4 mm. In size, the spring should be less than the pipe cross section so that it freely passes into the hole.

Make a spring.
Place the spring in the pipe.
Soldering lamp heat the desired plot.
Apply the pipe to the blank.
With force, press from two sides at a distance of 20-25 cm from the place of bend.

Perform the correct bend of pipes for the greenhouse will help preliminary calculation and drawing.

Draw an arc of the required radius.
Fill the pipe cavity with river or quartz sand.
Bend the pipe.
The correctness of the flexion check by the drawn radius.
The first bent tube will serve you as a template for the manufacture of the rest.

The complexity of work depends on the thickness of the metal. To independently cope with flexible pipes, you will need skill and patience. You can contact the workshop or buy a finished bent pipe - it will save you from the need to acquire expensive equipment.