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Bending of pipes and profiles

Bending pipes and profiles using a roll-up machine is a process that involves plastic deformation of metal pipes and profiles to give them curved, arc-shaped shapes without damaging the material. Roll-up machines, also called pipe rolling machines, are machines specially adapted for precise bending of elements with different cross-sections, such as pipes, rectangular and square profiles, as well as metal shapes.

Sahinler HPK 80 series coiler
Upper roller shaft	O mm	80
Lower roller shaft	O mm	70
Roll diameter	O mm	245
Working speed	m/min	6
Engine power	kW	4
Depth	mm	1450
Width	mm	1000
Height	mm	1400
Weight	kg	1700

Collapse parameters
Flat bar 100x20	R min 2000mm
Square rod 45x45mm	R min 500mm
Round bar 50mm	R min 500mm
Pipe 100mmx2,5	R min 1200mm
Rectangular profile 80x25x3	R min 800mm
Square profile 70x70x3	R min 1300mm
Square 80x80x8	R min 800mm
C-section UPN 140	R min 1600mm
I-beam IPN120	R min 600mm

Bending process on a coiler

Pipe or profile preparation: Before bending, the material must be prepared correctly – the pipe or profile must be precisely measured and cut to the desired length. The type of material (steel, aluminum, copper, etc.) affects the settings of the coiler, as different materials have different bending properties.
Coiler setting: The coiler consists of three rollers – the two lower rollers support the material, and the upper one presses on it, forming an arc. To precisely set the machine, the distances between the rollers and the pressure force must be adjusted depending on the thickness and type of material.
Bending process: During bending, the pipe or profile is moved between the rollers, which evenly bend it into the desired shape. The upper roller is gradually lowered to control the degree of curvature. This process allows for bends with large radii, which are difficult to achieve using other bending methods.
Repeated bending: Rollers enable repeatable bending of elements with the same parameters, which is particularly important in series production. Thanks to precise settings, each subsequent element is bent in the same way, which minimizes production errors.
Bending correction: If more complex shapes are required, it is possible to gradually correct the pressure and bending angle by repeatedly passing the material through the rollers. This method allows for achieving a variety of curvatures.

Application

Bending pipes and profiles using coilers is widely used in many industries, including:

Construction: production of structural elements such as arches, beams and handrails.
Automotive industry: bending pipes for exhaust systems, safety cages and other body elements.
Furniture: creation of metal structural elements of furniture, such as table and chair legs with unusual shapes.
Architecture: production of decorative metal structures such as gates, fences or building facade elements.

Advantages of bending pipes and profiles on a coiler

Precision: Rollers allow for uniform, arc-shaped bends with high accuracy.
Material safety: Rolling ensures uniform force distribution, which minimizes the risk of material cracking or deformation.
Ability to bend large radii: Rollers allow for arcs with large radii, which are difficult to achieve with other methods.
Repeatability: Rollers allow for serial bending of elements with identical parameters, which is crucial for large-scale production.

Summary

Bending pipes and profiles using a coiler is an effective method of forming metal elements, ensuring precise bending while maintaining the material properties. The use of coilers is of particular importance in industries where elements with large bending radii and high aesthetics are needed, such as construction, automotive or furniture industry.