High-Precision CNC Metal Bending Services
- Tailored metal bending solutions
- Extensive thickness processing capability
- Manufacturability and repeatability
- Fast and reliable turnaround times
- Flexible small batch production
- Diverse Metal Bending Processes
Why Choose Our Metal Bending Services?
DSR offers precision metal bending services. If you need high-quality bending parts with precise dimensions on time, we are your ideal choice. Our factory has many kinds of advanced machine tools for bending, such as bending machines, roll forming machines, curving machines, etc. They can adjust the angle of bending or curvature according to your requirements to ensure the function and strength of the parts. And these machines can process multiple bends on each part, which means they can fabricate parts with complex shapes for you.
Meanwhile, DSR has a professional team of metal bending engineers. From material selection to bending process, they can make the best solution based on your needs, so that your project can achieve the best results. In addition, we have simplified the production process in the factory. In this way, you can also get your own custom bending parts in the shortest possible time. Whether you need a single prototype or mass production, we can complete small and large orders. Please feel free to send your orders to us.
What Shapes of Metal Bending Parts can We Produce?
DSR has a wide range of metal bending equipment and can produce sheet metal parts in various shapes to meet your specific needs. Below are the types of shapes we can manufacture for you.
Single 90° bend. Despite its simple shape, this component is often used in building connections, mounting of equipment and strengthening of parts.
Two parallel bends. This shape of the part offers excellent structural rigidity and weight reduction advantages, and is widely used in guide rails, cable trays, protective enclosures, and support grooves.
Two reverse bends. This type of part has extremely high precision control requirements for bending angles and offset distances to ensure accurate alignment during assembly.
This geometric structure has an extremely high strength-to-weight ratio, making it the preferred solution for automotive structural reinforcements and chassis components.
As box structures, box-type bent parts are commonly used as protective enclosures for electrical systems, server cabinets and industrial equipment. We specialize in custom metal box enclosures ranging from 1 mm to 15 mm in thickness, and also offer services such as flanging, ventilation cutouts and surface finishing.
Bending panel parts can form a neat edge contour while improving structural rigidity and appearance. We can use aluminum alloy and other materials to customize the bending panels to ensure no scratches on the surface and accurate edge dimensions.
Step-bent parts feature multiple consecutive bends, with varying bend angles and spacing at each stage. Our team carefully plans the sequence of each bend to ensure that the cumulative tolerance of the entire part is kept within ±0.1 mm.
Hemming and bending parts can significantly improve edge rigidity, eliminate sharp burrs, and present a safe and beautiful finished product appearance. DSR offers both open-ended and closed-ended flanging options, accurately controlling the hemming radius and flatness to ensure the consistency of the entire batch of orders.
Stiffeners can significantly increase structural rigidity without increasing material thickness and weight. This process is important for large panel components because these panels are prone to deflection or buckling under load or thermal expansion.
Metal Bending Parts We Have Manufactured
Our metal bending process is designed to precisely form flat sheet metal and profiles into components that fully meet your design specifications. We select the most suitable machining solution based on your part specifications, with dimensional tolerances controlled within ±0.1 mm and angular accuracy of ±0.5°.
We manufacture precise parts according to your drawings and technical specifications. Whether it is a single-bent bracket or a complex component with multiple bends, we can handle it perfectly. We also offer bending services for a variety of materials, including stainless steel and aluminum alloy.
Box enclosures are typically used to protect sensitive electrical components, control systems, and industrial equipment from environmental corrosion, dust, and electromagnetic interference. We can manufacture enclosures with precise dimensions and have the ability to accurately control every bend angle, corner gap alignment, and panel flatness.
Sheet metal forming fixing parts are fastening and mounting components manufactured using CNC bending processes. These components have requirements for structural integrity, vibration resistance, and ease of maintenance. We ensure that the hole positions are precise and the bending angles are consistent.
These parts are high-strength structural parts, mainly used to improve the rigidity, impact resistance and load-bearing capacity of vehicle and equipment frames. Our Chassis Reinforcements are often made of high-strength materials, and the dimensional tolerance is controlled within ±0.1mm.
Our exhaust pipe bends can withstand extremely high temperatures, corrosive exhaust gases, and continuous vibration, while also featuring a smooth inner wall surface to ensure optimal airflow and minimum back pressure. The outer diameter of the pipes ranges from 25mm to 120mm. Minimum bend radius can be as small as 1.5D.
The EMI shielding cover is a closed structure formed by CNC bending. It is mainly used to block the impact of external electromagnetic interference on sensitive electronic circuits, or to prevent internal radiation from leaking to the outside. This type of part has very high dimensional accuracy requirements, and we also choose various materials such as copper and aluminum alloy to customize and process EMI shielding covers.
Electrical cabinet panels must meet strict requirements for dimensional accuracy, flatness, and edge straightness to ensure proper door alignment, reliable dust and moisture seals, and secure mounting of internal components. Our electrical cabinet panels range in thickness from 1.2mm to 3mm, integrating various function features such as keyhole openings and grounding points.
Our copper busbars maintain the integrity of the conductor cross-section. In addition, we also ensure complete conductive performance by controlling the bending radius, meeting the thermal and electrical performance requirements of your power system design.
Our HVAC piping system parts feature excellent airtight connections and maintain long-term structural stability under a wide range of temperature and humidity conditions. Additionally, DSR can also select the appropriate materials based on your specific requirements and manufacture finished products with consistent dimensions and precise mating surfaces.
Our Cable Tray Sections are commonly used in commercial buildings, industrial plants, data centers, and other facilities. These components feature consistent cross-sectional dimensions, uniform flange heights and accurate hole patterns. As a result, you can seamlessly join them together during long-distance installations.
Metal shelving is a storage system designed for warehousing. Our shelving panels undergo multiple bending processes, ensuring rigidity and a high load-bearing capacity. And our mass production capabilities ensure that all units within a batch are uniform in size and meet the required load-bearing standards.
Our machine guards fully comply with the structural rigidity requirements of ISO 14120, and also offer convenient and secure mounting options along with precise dimensional specifications. These guards can be used in a wide range of extreme environments, ensuring that internal equipment remains protected from external interference.
In conveying systems, conveyor side panels guide items along a predetermined path. We use wear-resistant materials to manufacture them, and they can withstand extremely heavy loads. Of course, DSR can also customize the height and length of the side panels to match your conveyor configuration.
Equipment mounting brackets are structural support components. All our brackets meet a critical requirement: they are capable of withstanding their rated load for many years of use without deforming or loosening. We can also engineer these brackets to meet your specific requirements.
What Materials are used to Make Metal Bending Parts?
Choosing the right material is fundamental to project success. With over a decade of CNC bending experience, we can process a variety of materials based on your plans.
Our Metal Bending Service Technology
Relying on industry-leading CNC bending technology, we provide you with efficient, zero-defect metal forming solutions. Our workshop is equipped with advanced CNC bending machines, combined with intelligent programming and precision molds.
Air BendingThe most common and flexible bending method. Through this process, we can bend the workpiece into various angles (such as 90°, 120°, etc.). And the equipment pressure is small, so the mold wears slowly.
BottomingWhen you have higher requirements for angle consistency, we choose the bottoming process. Compared to air bending, it significantly reduces material springback and offers higher angle precision, so mass-produced components can maintain excellent dimensional consistency.
CoiningThe coining process has extremely high precision, with internal R corners that can be very small and sharp, and there is absolutely no issue with material rebound.
U Die BendingU-die bending is a single-step forming process that offers high production efficiency and excellent dimensional consistency. Additionally, this process reduces cumbersome manual operations such as flipping and aligning, thereby significantly reducing scrap rates.
Flange BendingThe flange bending process is ideally suited for large sheet metal panels and can effectively reduce the physical strain on operators and minimize safety risks. During processing, the sliding friction of the sheet body is minimal, so this process is also very suitable for handling appearance parts with polished or coated surfaces.
Rotary BendingCompared to traditional V-bending, rotary bending technology can achieve No-Mar Bending. It can perfectly protect the surface of the workpiece, thus eliminating subsequent tedious polishing and repair processes.
Roll BendingThe arcs produced by this process are exceptionally smooth, with no creases on the surface. The roll bender features an open design, allowing the sheet metal to be rolled into a closed cylinder. In addition, the roll bending process offers extremely high production efficiency.
Step BendingStep Bending offers excellent cost control advantages and can perfectly meet some customers’ “multi-variety, small-batch” customization needs. It utilizes existing standard tools for machining, thereby significantly reducing your prototyping and production costs.
HemmingHemming is typically used for the final finishing of parts, effectively removing sharp, rough burrs from edges. This process also significantly enhances the resistance of sheet metal edges to bending and twisting.
Advantages of DSR Metal Bending Services
Want to make yourself more worry-free and more assured? We provide a tailor-made solution for each customer and deliver parts that meet specifications through a high-quality service process.
DSR utilizes advanced CNC bending technology to shape metal, reducing human error and ensuring that each part meets specifications. The bending angle error is also controlled within ±1 degree.
We can custom-produce multi-purpose parts for you. By optimizing the design, we ensure these components are easy to install and use, perfectly fitting your operating environment.
Our metal bending technology has extremely high precision, resulting in minimal material waste during the production process, which can effectively reduce material costs.
Our equipment offers high processing efficiency and is capable of producing consistent parts. We also support high-volume production and can quickly manufacture parts according to your required quantities.
Metal bending services require less labor than traditional forming methods and can reduce the need for welding, thereby significantly reducing labor and material costs.
Our CNC bending services support a wide range of materials. This process can produce parts of various sizes and offers exceptional project flexibility.
The metal bending process can greatly increase the strength at the bending point of the workpiece, making the finished parts more durable and able to withstand greater loads.
The metal bending process can greatly increase the strength at the bending point of the workpiece, making the finished parts more durable and able to withstand greater loads.
Strict Quality Inspection for Metal Bending Parts
In metal bending, even the slightest angular deviation can lead to failure during subsequent assembly. Therefore, DSR has implemented a stringent quality inspection system throughout the entire production process. From first article inspection (FAI) to batch sampling, our professional quality inspection team uses high-precision digital protractors and coordinate measuring machines to perform precise verification of parts.
In addition, we strictly monitor springback and micro-cracks along the edges after bending high-strength sheet metal, and ensure that your non-marking bent parts meet surface standards. We guarantee that every bent part we deliver will perfectly match your engineering drawings and be ready for immediate use.
Surface Treatment of Metal Bending Parts
Bending and forming is only the first step in metal processing. Based on your needs, we will also choose the appropriate surface treatment process to give the parts better texture and performance.
We perform minimal post-processing or machining on bent metal parts, thus providing smooth edges.
The most common and cost-effective surface treatment method. The coating cured onto the metal surface is very thick and durable, and it can also conceal die marks left by V-bends or minor scratches. There are also various colors available to meet your different aesthetic needs.
This process can form a dense, hard aluminum oxide film on the surface of the workpiece. This oxide film can improve the surface hardness and wear resistance of the part.
Sandblasting uses high-speed compressed air to spray abrasive onto the metal surface, thereby forming a very uniform, high-grade matte metallic texture on the surface of bent parts.
A chemical treatment process specifically for aluminum and magnesium alloys. This process can form a very thin corrosion-resistant conversion film (usually golden yellow) on the surface of the parts. At the same time, this chemical film also retains the conductivity of the aluminum material.
Zinc plating is to immerse parts in a zinc salt solution and deposit a layer of zinc on the surface of the parts through electrolysis. This process is cost-effective and provides excellent rust protection.
Electrolytic nickel plating deposits a uniform layer of nickel-phosphorus alloy onto the metal surface. It provides parts with extremely high wear resistance, hardness, and excellent corrosion resistance.
Industries Our Metal Bending Parts Serve
Different applications have vastly different requirements for metal forming. Our metal bending services provide exceptional solutions for a wide range of industries, ensuring you can obtain the parts you need.
Industrial automation equipment requires reliability and customized parts. We can provide non-standard customization services for you through processes such as air bending, with extremely low mold costs.
We can mass-produce consistent bent automotive parts for you, and these parts also possess excellent impact strength. At the same time, for high-strength steel materials, we also use large tonnage bending machines to overcome the material’s significant springback.
Components used in aerospace applications often demand very high levels of lightweighting as well as excellent fatigue properties. We are capable of machining titanium alloys and aerospace-grade aluminum. And we utilize high-precision machine tools to ensure that parts maintain perfect assembly tolerances.
For large energy storage tanks, the roll bending process can provide seamless large-radius curved structures. And after powder coating surface treatment, some outdoor new energy components can also achieve excellent corrosion resistance.
The medical industry has extremely stringent requirements for precision, hygiene standards and appearance of metal parts. We utilize rotary bending to process aluminum or stainless steel, ensuring that these components are free of indentations and are perfectly suited for subsequent wire-drawing or anodizing processes.
We can manufacture a wide range of electrical equipment for you, including server enclosures and communication base station cabinets. We ensure their structural rigidity while maintaining the metal’s electrical conductivity and shielding properties.
Our bending technology and surface treatment can give metals an excellent surface texture, thus providing your furniture with an exceptionally outstanding appearance.
The working environment of agricultural machinery equipment is extremely harsh, so the parts used in these equipment must be high-strength and wear-resistant. We can use high-strength steel plate materials to make various types of agricultural machinery parts. These components are also easy to install and maintain.
Technical Capabilities of Our Metal Bending Services
If you need a reliable metal bending service partner, you need to consider the company’s technical strength. DSR relies on advanced CNC equipment and exquisite craftsmanship to provide you with efficient and precise manufacturing solutions. Our metal bending standards depend on ISO 2768.
- Bending Dimensional & Angular Tolerances
- Linear Dimensional Tolerances
- Processing Material Thickness
| Measurement Dimension | Size / Thickness Condition | General Tolerance Range |
| Bend Angle | Material Thickness ≤ 3.0mm | ± 1.0° |
| Bend Angle | Material Thickness > 3.0mm | ± 1.5° to ± 2.0° |
| Bend-to-Bend Dimension | Length ≤ 120mm | ± 0.30 mm |
| Bend-to-Bend Dimension | Length 120mm – 400mm | ± 0.50 mm |
| Basic Dimension Range (mm) | Precision Tolerance (mm) | Standard Tolerance (mm) |
| 0.5 to 30 | ± 0.10 | ± 0.20 |
| 30 to 120 | ± 0.15 | ± 0.30 |
| 120 to 400 | ± 0.20 | ± 0.50 |
| 400 to 1000 | ± 0.30 | ± 0.80 |
| 1000 to 2000 | ± 0.50 | ± 1.20 |
| Material Type | Bending Thickness Range (mm) |
| Aluminum | 0.5mm – 10.0mm |
| Stainless Steel | 0.5mm – 8.0mm |
| Carbon Steel | 0.5mm – 12.0mm |
| Titanium | 0.5mm – 4.0mm |
| Brass | 0.5mm – 6.0mm |
| Bronze | 0.5mm – 6.0mm |
| Copper | 0.5mm – 8.0mm |
| High-Strength Steel | 0.5mm – 6.0mm |
Aluminum alloys (especially grades 3003 and 5052) and pure copper.
First is the springback effect. After the bending force is removed, the metal attempts to return to its original shape. In order to solve this problem, the equipment and process must incorporate precise angle compensation. Second are material limitations and the risk of cracking. In addition, cumulative dimensional deviations can occur after the workpiece undergoes multiple bends.
Sheet metal forming or sheet metal fabrication.
Titanium alloy and ultra-high strength steel.
- Holes or cutouts are too close to the bend zone
- Ignoring the minimum bend radius of the material
- Failure to account for the direction of the material’s grain
- Bending flanges are designed too short
- Failure to adequately account for material springback
In modern CNC sheet metal manufacturing, air bending is undoubtedly the most widely used core technology with the best overall benefits.
Bending costs include initial setup fees and per-piece processing fees. Other factors that affect pricing include the type and thickness of the material, the complexity and precision of the part design, and the scale of production.
304 stainless steel and 5052 aluminum alloy.
When deciding whether to heat before bending, it depends on the physical properties and thickness limits of the metal.
Cold bending is the preferred method of the industry for most common sheet metal. Not only does it have incomparably high processing efficiency, but it can also retain the original crystal strength and surface of the material. When bending brittle materials such as titanium alloy or ultra-high strength steel, hot bending is required to prevent cracking. Heating the metal at high temperatures can reduce the yield strength of the metal and improve its plasticity considerably.
Tungsten, cast iron, osmium and chromium.
