Skip to content

PBF-60 Stretch Forming Machine

The PBF-60-70 Stretch Forming Machine is an advanced solution equipped with a single stretching cylinder, offering an impressive maximum pulling force of 60 tons. Tailored for handling workpieces ranging from 2 meters to a maximum length of 7 meters, it excels in achieving a minimum bending radius of 750mm, demonstrating its adaptability and precision.

How to bend aluminum tubing (Stretch forming and other 3 methods)

Capable of bending various materials including IPE beam 200, 120-angle iron, 219 steel pipes, and 200 T-shaped iron channels, this machine finds extensive applications in architectural decoration, steel structures, rail transportation, curtain walls, and conservatories. Its proficiency in manipulating steel, stainless steel, and aluminum profiles into curved forms caters to the demands of modern construction and structural designs.

The feasibility of bending materials is contingent on the material’s bending radius and thickness. The machine’s substantial pulling force ensures precise and controlled bending, facilitating the creation of curved structures with consistent accuracy.

With a focus on versatility and efficiency, the PBF-60-70 Stretch Forming Machine serves as an essential tool for industries requiring high-quality curved metal profiles. Its ability to shape diverse materials into precise arcs supports a wide array of applications, from architectural embellishments to structural elements, meeting the evolving needs of various sectors in contemporary construction and manufacturing.

Main Parameters

Length of stretchable2000~7000mmWith both ends
Max pulling force of stretch cylinder600KN 
Horizontal rotation angle of stretch cylinder≥30° 
Main oil pump nominal40+25 ml/rTwo plunger pumps, one for MCY: one for YCY
Hydraulic system max pressure25MpaMeet the range of processing requirements
Total motor power15+11KWTwo motors, 4 levels
Bending min radiusR750mmMeet the range of processing requirements
Max angle of single-arm rotation95° 
Max distance between the end of the two chucks7000mmMeet the range of processing requirements
Min distance between the end of the two chucks2000mmMeet the range of processing requirements
Chuck clamping max sizeCustomized 
Control the number of cylinders6 
Motor drive screw travel stroke1000mAdjust the position of the stretching cylinder to ensure the effective control of the length of the stretched and bent material.
Bend angle180°Meet the range of processing requirements
Stretching cylinderD270/d125Meet the range of processing requirements
Bending cylinderD250/d90Meet the range of processing requirements
Collet cylinderD168/d80Meet the range of processing requirements
NC controlSiemensOptional
Touch monitorWeilonProgrammable, store repeat operation.
Power supply  380V(AC)±15%  50HZCustomized
Ambient temperature -15℃ ~ 45℃ 
Expand Size  length x width x height12m×(5.0m+2.0m)7.0m×1.4m 
Workbenchlength x width 6.8(0.85+1.3+2.5+1.3+0.85)m×1.8m 
stretch forming machine
PBF-60 Stretch Forming Machine

Stretch forming aluminum sheet vs stretch forming aluminum extrusion

Stretch forming is a metal forming process used to shape sheets or extrusions of aluminum (or other metals) into curved or contoured shapes. While the basic principle of stretch forming applies to both aluminum sheets and extrusions, there are some key differences in the process and application between the two:

Material Form

  • Aluminum Sheets: Stretch forming aluminum sheets involves manipulating flat sheets of aluminum into curved or contoured shapes by stretching the material over a die or form block using a mechanical or hydraulic press. This process is often used for creating curved panels or surfaces, such as for aerospace components, architectural cladding, or automotive body panels.
  • Aluminum Extrusions: Stretch forming aluminum extrusions involves bending or shaping aluminum profiles that are produced by extruding aluminum through a die. The extrusions are typically in the form of complex shapes, tubes, or customized profiles. This method is commonly used in architectural structures, transportation, and structural frameworks.

Process and Equipment

  • Aluminum Sheets: The stretch forming process for sheets requires specialized equipment like a stretching machine or press capable of applying controlled tension to the material while shaping it over the die or form block.
  • Aluminum Extrusions: Stretch forming extrusions often involves different machinery or processes, sometimes using similar principles but adapted to suit the specific shape and size of the extruded profiles. It may involve dedicated stretch forming machines or specialized equipment designed for bending and shaping extrusions.


  • Aluminum Sheets: Used for applications requiring smooth and contoured surfaces, such as curved panels in aerospace, architectural features, or automotive body parts.
  • Aluminum Extrusions: Ideal for creating structural components, frameworks, or customized profiles for architectural designs, transportation (such as railings or frames), and various industries requiring complex shapes.

In summary, while both stretch forming aluminum sheets and extrusions involve shaping metal, they cater to different forms and applications, with each process tailored to suit the specific requirements of the desired end product or application.