Bending: Precision, Performance, and Engineering Expertise
As our name suggests, D&N Bending is built on bending expertise. We offer multiple processes to meet a wide range of material, geometry, and performance requirements. Every application is unique. That's why our internal engineering team works closely with customers to evaluate specifications, tolerances, material properties, and production volumes—selecting the optimal bending method to ensure performance, efficiency, and cost-effectiveness.
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Common Applications
By combining decades of experience with in-house tooling, process development, and engineering support, D&N delivers precision, repeatability, and long-term program success—whether for rapid prototypes or full-scale production programs.
CNC Bending
D&N Bending supports a wide range of materials, including aluminum, brass, copper, martensitic steels, dual-phase steels, carbon steel, titanium, and stainless-steel tubing. Our advanced equipment handles outside diameters from 0.250" up to 6" and everything in between—providing both rapid prototypes and high-volume production.
High-quality tube bending requires more than a single machine. To achieve precise bends, tight radii, and complex multi-bend geometries across various materials, D&N utilizes multiple bending technologies. Each project is matched with the optimal bending method to ensure dimensional accuracy, structural integrity, and repeatable performance.
All tooling is designed and built in-house, giving us full control over quality, lead time, and long-term program support.
Stretch Bending
As a vertically integrated manufacturer, D&N seamlessly transitions roll-formed sections and aluminum extrusions into precision stretch-bent components built to your exact specifications.
Stretch bending is a cold-forming process that eliminates the need for heat, making it more energy-efficient while maintaining material integrity. The process applies constant tension to the workpiece as it is stretched and formed over a precision-machined rail. By stretching the material during forming, we counteract internal compression forces—eliminating wrinkles, buckles, and distortion before they occur. This method allows D&N to produce components with single or multiple radii while maintaining tight dimensional control and superior surface quality.
With more than 60 years of experience designing and building stretch bending equipment, D&N supports everything from one-off prototype parts to high-volume programs producing hundreds of thousands of components annually. Our deep process knowledge and in-house equipment design set us apart in delivering complex curved profiles with confidence and consistency.
Pressure Bending
Pressure bending shares similarities with stretch bending but differs in one key aspect—there is no material stretching involved. Instead of applying tension, the process uses controlled pressure to form the workpiece over a precision-machined rail.
Like stretch bending, pressure bending is a cold-forming process, eliminating the need for heat while maintaining material integrity and energy efficiency. Because the material is not stretched during forming, pressure bending is often ideal for tube shapes and closed profiles. In contrast, open channel sections are frequently better suited for stretch forming, where controlled tension helps prevent wrinkling and distortion.
By understanding the mechanical behavior of each profile and material, D&N selects the optimal bending process to ensure dimensional accuracy, structural performance, and repeatable quality in both prototype and production applications.
More Production Solutions
Roll Forming
Nearly two dozen roll mill lines producing custom profiles with in-line secondary operations.
Learn MoreStamping
50+ presses up to 400 tons running transfer line and progressive dies to exact specifications.
Learn MoreAluminum Extrusion
Secondary operations on sourced extrusions — bending, piercing, machining, and finishing.
Learn MoreAssembly
Value-added assembly and secondary operations with quality accountability from PPAP through end-of-life.
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