Skip to content

Multi-Radius Rolling Machine

When it comes to bending parts in multiple radii, the intricacies of the bending process demand special attention. The challenge lies in creating bends that traverse multiple directions and exhibit varying tightness to precisely meet the unique requirements of a project. Achieving this level of precision is essential for ensuring the structural integrity and aesthetic appeal of the final product.

Multi-Radius Bending
PBA Aluminum Bending machine for Variable Radius Bending

PBA and PBH Multi-Radius Rolling Machine

The CNC system of the PBA aluminum bending machine and PBH section bending machine can bend shapes: C-shaped, U-shaped, 3R-shaped (variable curvature), multi-segment arc program (variable curvature), and C-shaped decreasing program. It accommodates various shapes such as ellipses, parabolas, and special chambers, providing a wide range of design possibilities. Additionally, it extends to creating flat “pancake” coils or true spirals, though it’s important to note that the term “helical spiral bending” can be misleading, as spirals are curved in one plane, while helixes are curved in two.

Variable Radius Rolling Machine

PFB Multi-Radius Rolling Machine

The Freeform Bending Machine revolutionizes metal fabrication by introducing the concept of variable radius bending. This cutting-edge technology allows for dynamic adjustments in bending radii within a single piece, offering a level of precision and flexibility that was once unimaginable.

Freeform Bending Machine’s ability to adapt bending radii on the fly empowers designers to create organic, flowing shapes with unprecedented ease.

Traditionally, achieving variable radii involved intricate welding and assembly processes. The Freeform Bending Machine eliminates these complexities, enabling the creation of continuous variable radius bends within a single piece. This not only streamlines production but also enhances the structural integrity of the final product.

PR4 Multi-Radius Plate Roll

PR4 Multi-Radius Plate Roll

PR4 Multi-Radius Plate Roll/Plate Rolling Machine is a specialized piece of equipment used in metal fabrication that facilitates the bending of metal plates with different radii within a single operation.

The primary function of a Multi-Radius Plate Roll is to bend metal plates with multiple radii in a single pass. This capability allows for the creation of complex shapes and contours without the need for additional setups or operations.

AISC Design Guide 33 Curved Member Design Section 2.2.6: Parabolic, elliptical and other non-circular bends are variable-radius bends, also known as multi-radius bends. The funicular form for a member resisting a uniform gravity load is defined by a parabola; therefore, many arches are shaped to a parabolic curve. Elliptical bends can be required where a curved plane interfaces with a skewed plane.

About Multi-Radius Bending/Variable Curvature Rolling Machine

Multi-Radius steel bending, a versatile metalworking technique, allows for the precise bending of steel within a single part, eliminating the need for splices and minimizing material wastage at the ends of the bending.

  • One of the significant advantages of Multi-Radius steel bending is its efficiency in producing complex curves within a single component, avoiding the challenges associated with welding multiple pieces together. This not only streamlines the manufacturing process but also contributes to the overall quality and integrity of the final product.
  • Applications of Multi-Radius curved steel are diverse. Ornamental ironwork benefits from the intricate and precisely curved elements achievable with this technique, adding aesthetic appeal to architectural and artistic designs. The method is particularly well-suited for elliptical structures, where traditional bending approaches might fall short. Additionally, Multi-Radius steel bending finds applications in the creation of multi-radius structural supports, providing strength and stability in unique configurations.

In summary, Multi-Radius steel bending stands as an innovative solution in metalworking, enabling the production of intricate and precisely curved steel components within the same part. This technique not only enhances design possibilities but also addresses practical concerns such as material wastage and the need for additional splices, making it a valuable asset in various industries, from ornamental ironwork to architectural and structural applications.

Top 3 Advantages of Multi-Radius Bending Machine

  • Uniting Form and Function – The Pitfalls of Welding Multiple Parts: In traditional fabrication, parts are often created by bending different lengths of metal separately, only to be later welded together. However, this approach can introduce quality concerns, as the welded joints may compromise the overall strength and durability of the component. Multi-radius bending machines offer a superior solution by enabling the production of a single part with all the necessary bends, eliminating the need for welding and ensuring a higher standard of quality.
  • Beyond Decorative – The Versatility of Multi-Radius Bending: Whether the goal is a decorative piece, a functional component, or a harmonious blend of both, multi-radius bending emerges as the key to achieving the desired form and function. This advanced bending technique not only ensures structural integrity but also eliminates the visual disruptions caused by welded joints. The adaptability of multi-radius bending allows for the incorporation of ellipses, parabolas, and specialized cambers, providing designers and fabricators with unparalleled creative freedom.
  • Efficiency in Design – The All-in-One Solution: Multi-radius bending machines stand as an efficient all-in-one solution for intricate projects. By accommodating complex bends in a single part, these machines streamline the fabrication process, reduce the risk of defects associated with welding, and elevate the overall quality of the final product. The ability to achieve diverse shapes and contours without compromising strength makes multi-radius bending a cornerstone in modern metalworking.


In the realm of metal fabrication, Multiple-Radii Bending Machines/Variable Radius Rolling Machines emerge as a transformative force, bridging the gap between form and function. With precision in design, elimination of welding concerns, and the versatility to accommodate various shapes, these machines redefine what is achievable in creating both visually stunning and structurally sound components. Embracing the art and science of multi-radius bending opens new avenues for innovation, providing designers and fabricators with the tools to turn their visions into reality.