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Since our establishment in 2011, Guangdong DongJi Intelligent Device Co., Ltd. has become a trusted leader in custom sheet metal fabrication and intelligent device manufacturing. Situated in Jiangmen, Guangdong, our 30,000-square-meter facility houses a team of 166 skilled professionals, including 25% technical specialists. As a high-tech enterprise with over 100 technical patents, we are dedicated to delivering comprehensive OEM and ODM services—from initial concept to full-scale production.   Our commitment to quality and innovation has earned us certifications like ISO 9001, CE, SGS, and TUV. Today, our products are trusted by clients in more than 50 countries, including the U.S., Canada, Japan, Germany, Italy, Australia, and across Southeast Asia. One-Stop Manufacturing Solution We provide a complete range of services, including program development, product integration, aesthetic design, sheet metal fabrication, assembly, and rigorous testing. Our advanced production equipment includes laser cutting, CNC punching, CNC machining, CNC bending, welding (both automated and manual), polishing, grinding, automated painting lines, and assembly stations. Our capabilities extend from smart solutions like vending machines and intelligent robots to traditional sheet metal products—such as stainless steel components, CNC parts, control cabinets, network housings, equipment enclosures, metal frames, and custom steel racks. Our Core Values DongJi draws inspiration from traditional Chinese cultural values, prioritizing integrity, collaboration, and mutual success. We are dedicated to continually improving our processes, enhancing industry standards, and fostering both professional and personal growth for our employees. What We Offer Specialized ExpertiseOur specialization lies in customized sheet metal fabrication and the creation of intelligent devices. We provide end-to-end ODM and OEM services that include design, cutting, punching, CNC machining, forming, welding, polishing, coating, spray printing, and assembly. Our portfolio spans a diverse range of products: metal cabinets, display stands, metal brackets, frames, household goods, kitchenware, and cutting-edge intelligent devices like smart vending machines and robots. Flexible Production CapacityWe handle projects of all sizes, seamlessly transitioning from prototype validation testing (PVT) to mass production (MP). Our adaptability allows us to meet even the most complex customization requirements, whether for small-scale prototypes or large production runs. Commitment to QualityQuality is at the heart of everything we do. Our strict quality control system involves rigorous inspections at every stage—from incoming materials to first-article inspections, in-process checks, and final evaluations. A Manufacturing Execution System (MES) ensures complete transparency and adherence to design specifications. Tailored Design & CustomizationWe offer Design-for-Manufacturing (DFM) guidance to streamline production, reduce costs, and enhance efficiency. With extensive experience in both sheet metal and intelligent devices, our technical team ensures a smooth transition from initial design to final product. Clear Pricing & Cost EfficiencyOur pricing is transparent, with clear quotes for prototypes and mass production. We provide volume discounts for larger orders and explore cost-saving measures for extensive projects, ensuring competitive and value-driven solutions. Reliable Supply Chain & Project ManagementOur robust supply chain and project management frameworks guarantee smooth production flow. A dedicated project team oversees every step, from design and prototyping to final production, promptly addressing any challenges. We excel at delivering fully integrated solutions, ensuring efficiency and reliability. We are eager to collaborate on your next project, combining our expertise with flexibility to meet your specific needs. At DongJi, your success is our priority, and we look forward to building a lasting partnership.

Finding the perfect sheet metal fabrication partner can make or break your project. Here are some tips to guide your search: Define Your Needs ClearlyStart by outlining your project's requirements, including material type, precision, volume, and lead time. Knowing exactly what you need helps you target the right suppliers. Check Capabilities & EquipmentDoes the supplier have the right machinery for your job? Advanced equipment like CNC machines, laser cutters, and automated bending tools can ensure quality and efficiency. Verify Quality StandardsLook for certifications like ISO 9001 and ask about their quality assurance processes. A reliable supplier should have a robust quality control system in place. Evaluate Experience in Your IndustryExperience matters. Suppliers with a track record in your specific industry often have insights that can save you time and money. Request Samples & Review Past ProjectsAsk for samples or examples of past projects to assess the supplier’s craftsmanship. Don’t just rely on photos—visit the facility if possible. Prioritize CommunicationA good supplier is responsive and easy to communicate with. Clear and consistent communication is key to a smooth production process. Consider Logistics & Lead TimeMake sure the supplier can meet your deadlines and handle logistics efficiently. Local suppliers might offer quicker turnaround, while international ones could provide cost advantages. Choosing the right supplier takes time, but a careful selection process pays off with high-quality products, timely delivery, and a trusted long-term partner. Have any more tips for finding a great sheet metal supplier? Share them in the comments below!

What are the material selection methods for steel fabrication? Under normal circumstances, sheet metal processing materials are mainly divided into the following, stainless steel, copper, aluminum and other materials, different types of sheet metal materials need to use different processing methods and used in different ways. 1. Carbon steel-SPCC The SPCC Carbon steel is a more commonly used material in sheet metal processing materials. Its surface is relatively smooth and has a uniform thickness, which does not incur large costs and is easy to form. 2. Stainless steel Commonly used are sus201, sus304, sus316 and so on. Due to the strong rust resistance of stainless steel, it can be used in wet environments or outdoors without surface treatment. 3. Aluminum and copper Both materials are somewhat like stainless steel. In general, scratches and dents are not allowed on the surface. Another very special. It cracks easily when bent. The copper plate is generally not cracked. 4. Galvanized steel Galvanized sheet is mainly galvanized on the surface of steel sheet. Under normal circumstances, it is necessary to control the thickness of the galvanized layer of the steel plate to be more than 10 μm, which can prevent the surface of the steel plate from being corroded and other damages. It is mainly used in parts with greater requirements for anti-corrosion. The above is an introduction to the relevant content of the material selection method for sheet metal fabrication. Dongji focuses on sheet metal fabrication more than 10 years, and makes different kinds of stainless steel enclosures according to customers' drawings. All OEM orders for metal enclosures, metal cabinets, stainless steel housings and aluminum cabinets are welcommed. Are you interested in us? If yes,please take action. Contact person: Carmen Huang E-mail: DJsales2@metalwork.CC

The Paper 2021-12-09 10:00 On December 9, data released by the National Bureau of Statistics showed that in November, with the continuous implementation of the policy of ensuring supply and stabilizing prices, the rapid rise in prices of energy and raw materials such as coal and metals was initially curbed, and the increase in PPI declined. From a month-on-month perspective, PPI was flat from a 2.5% increase in the previous month. Among them, the price of means of production changed from an increase of 3.3% to a decrease of 0.1%; the price of means of living rose by 0.4%, an increase of 0.3 percentage points. The multi-departmental collaboration has curbed the irrational rise in coal prices, and coal production and market supply have continued to increase. The price of coal mining and washing industry has changed from an increase of 20.1% to a decrease of 4.9%, and the price of coal processing has changed from an increase of 12.8% to a decrease of 8.4%. The effect of ensuring supply and stabilizing prices in the metal industry is evident. The price of ferrous metal smelting and rolling processing industry has changed from an increase of 3.5% to a decline of 4.8%, and the price of non-ferrous metal smelting and rolling processing industry has changed from an increase of 3.6% to a decline of 1.2%. International crude oil and natural gas prices fluctuated at high levels, driving up prices in related domestic industries. The price of oil extraction increased by 7.1%, the manufacturing price of refined petroleum products increased by 4.7%, the price of chemical raw materials and chemical products manufacturing industry increased by 0.7%; the price of gas production and supply industry increased by 4.1%. In addition, the price of electricity and heat production and supply industry increased by 1.9%, the price of agricultural and sideline food processing industry increased by 1.4%, and the price of textile industry increased by 1.2%.

The main processes of sheet metal processing include: Laser cutting , CNC bending, punching and shearing, stamping, rounding, riveting, welding and so on. All sheet metal processing processes are based on careful design and specification of product drawings by sheet metal engineers before operation. The main process terms are: blanking, riveting, bending, cutting, blanking, punching, riveting, pulling mother, pulling riveting, riveting, chamfering, forming, punching convex hull, punching and tearing, punching, expanding Hole, punching, chamfering, back thread, drawing hole, tapping, leveling, drilling, countersinking, leveling, welding, spraying, assembling, etc. What are the common products that use sheet metal processing in life? like the computer chassis cabinets, TV protective shells, machine shells, air conditioner shells, terminal integrated shells, charging pile box shells, etc ......

In addition to sheet metal fabrication, we also provide value-added assembly services to meet customers' different product requirements. Our team is experienced in assembling a wide variety of custom cabinets, sheet metal enclosures, brackets , stainless steel boxes, and shells. We also provide parts kitting services by assembling and packaging the required parts in kits. Depending on your specific assembly needs, assembled components can be plated, screen printed or labeled, packaged, and shipped to your destination. By providing complete manufacturing and assembly services from a single source, we help our customers reduce production costs and time to market.

1. All electrochemical treatment should be carried out in the state of the parts, because the chemical solution during the treatment process will be trapped in the crevices of the assembly and cause corrosion; 2. Spot-welded parts can be chemically treated, but not electrochemically treated; 3. Aluminum alloy castings cannot be anodized with sulfuric acid; 4. Electrochemical treatment is generally not suitable for thin and long tubular parts, because there will be no film layer on the inner surface; (special measures can be taken to meet the requirements in special cases) 5. After the parts with deep grooves or fine holes are electroplated, the inner surface will not be completely covered with the coating; 6. It is best to carry out phosphating treatment before spraying the steel parts to increase the adhesion of the coating; 7. In order to improve the corrosion resistance of steel parts plated with bright nickel, copper or dark nickel can be plated first; 8. Zinc-based alloys generally use electroplating as protective decoration. In order to improve the bonding force of the coating, it is generally necessary to pre-plated copper or nickel; 9. Since most organic gases have a corrosive effect on zinc, the galvanized layer should be carefully selected in the design of sheet metal processing to be in contact with organic materials or assembled in the same closed body; 10. For electroplated parts with riveting requirements, the processing procedure must be electroplating first and then riveting. Are you interested in us? If yes,please take action. Contact person: Carmen Huang E-mail: DJsales2@metalwork.CC

What is CNC Punching? CNC punching abbr Computer Numerically Controlled punching which is a common sheet metal fabrication process. CNC punching an electromechanical device that uses computer programming input to operate tools and generate patterns from software files. CNC punching an electromechanical device that uses computer programming input to operate tools and generate patterns from software files. CNC Punching machines offer you flexible processing of a diverse range of metal parts. As well as punching, the machines provide the option of reforming metal parts or tapping. CNC punching always minimizes setup times and increases your productivity. Our automative Sheet Metal Fabrication CNC Punching machine can process the intricate formed features, perforations and patterns with high speed precision. Sheet metal punching is the most efficient way to produce precision fabricated metal products with many holes. DONGJI is a Sheet Metal Fabrication Manufacturer. We are focus on turnkey solution of Laser Cutting Service, CNC Punching, CNC Bending, Welding, CNC Machining, Surface Finishing and Assembly & Testing Service. If you have any sheet metal fabrication RFQ, please do not hesitate to contact with us. Thank you. DongJi Intelligent Device Co., Ltd Wuhe Farm Industrial Park, Daze Town, Jiangmen City, Guangdong Province Tel / Whatsapp / Wechat: +86 13427305662 Skype: live:89f182905ef7c969 Facebook: vicki.wong.716195 https://www.instagram.com/vickiwong530/ https://www.djmetalwork.com

We are a sheet metal fabrication and metal enclosure assembly provider. Our services include: Sheet Metal, Custom Fabrication, Stainless Steel and Copper Fabrication, Metal Surface Finish Services. We provide products, supplies and services to most industries in need of a reliable source for sheet metal manufacturing, steel fabrication service's and much more. Not only provide the mechanicla parts for custom metal enclosure , but also provide Harness and cable assembly service for our customers. Including metal housing assembly, electrical cabinet asembly, stainless steel product assembly, steel base assembly, display stand assembly. If any pending project about sheet metal fabrication for metal enclosure box, such as CNC laser cutting, CNC punching, stamping, CNC bending, Robot welding, TIG welding, Polishing, Brushed, Powder coating and so on. Please feel free to contact us for further assistancce or information.

Laser cutting technology is widely used in the processing of metal and non-metal materials, which can greatly reduce processing time, reduce processing costs and improve workpiece quality. Laser cutting is an indispensable equipment in sheet metal processing and a representative process in the sheet metal processing industry. Guangdong Dongji Intelligent Device Co., Ltd owns 3 imported laser cutting machines, with power of 6000w, 3000w and 2000w. The laser cutting incision is narrow, the two sides of the incision are parallel and perpendicular to the surface, and the dimensional accuracy of the cut parts can reach ±0.1mm. The cutting surface is smooth and beautiful, and the surface roughness is only tens of microns. Even laser cutting can be used as the last process without machining, and the parts can be used directly. After the material is laser-cut, the width of the heat-affected zone is very small, and the properties of the material near the cutting seam are hardly affected. The workpiece deformation is small. The cutting precision is high.The geometrical shape of the cutting seam is good, and the cross-sectional shape of the cutting seam is relatively regular rectangle. Our company has German TRUMPF 100 ultra laser cutting machine, Japan AMADA laser cutting machine, can be for the sub-thick plate material, do not need to use molds, can be any shape of steel plate for processing, and no burrs, smooth surface. Equipment/Common Specifications of our machines: * Germany TRUMPF Bystronic laser cutting machine * Japan AMADA laser cutting machine * Power 3000W/5000W * To small clearance 0.1MM * Material thickness: 25mm (carbon steel), 30mm (stainless steel), 20mm (aluminum) * Working range: 3000mm x 1500mm The above is an introduction to the relevant content of the sheet metal fabrication-laser cutting. Dongji focuses on sheet metal fabrication more than 12 years, and makes different kinds of metal box (SPCC, stainless steel, Aluminum,Galvanized Steel box) according to customers' drawings. All OEM orders for metal box, metal cabinets, stainless steel housings and aluminum cabinets are welcommed. Are you interested in us? If yes,please take action. Contact person: Carmen Huang E-mail: DJsales2@metalwork.CC

[ Whether it is a sheet metal processing manufacturer or an individual who performs sheet metal processing operations, it is often possible that the sheet metal processing accuracy is not ideal. Therefore, in order to better ensure guaranteed power, reduce material waste, and reduce labor, we need to improve the machining accuracy of sheet metal processing. So do you know how sheet metal processing can improve processing accuracy? Please let me introduce to you: Methods of sheet metal processing to improve machining accuracy: 1. Balance method: If the positioning error of sheet metal processing is large, the differential method can be used. Line divides the original errors into n groups by their size, scales down each group of errors to 1/n of the original size, and then adjusts for each group. 2. Compensation method: Humans create new errors to offset the original errors in the process system. Human error is positive when raw error is negative, otherwise, sheet metal fabrication should take a negative value and try to make the two scales equal. 3. Delivery method: The original error of the sheet metal processing system is transmitted to the non-sensitive direction of the processing error or other aspects that do not affect the processing accuracy under certain conditions. For example, when the accuracy of the machine tool does not meet the requirements of part processing, conditions may be created in processing or fixtures, so that some errors of the machine tool can be transferred to aspects that do not affect the accuracy of sheet metal processing. 4. Homogenization method: Parts with high sheet metal processing accuracy can be homogenized. It identifies differences by closely related appearances and then corrects or benchmarks against each other, thereby reducing and balancing errors in the appearance of workpieces. 5. Error reduction method: If there are any errors in production, first find out the main factors that affect processing errors, and then try to eliminate or reduce these factors. For example, when machining parts with shape and appearance, it is mainly to reduce shape errors and equipment errors of forming tools. The above are the five methods commonly used in sheet metal processing to improve machining accuracy. Through these aspects, we can effectively improve the precision of sheet metal processing, so that while ensuring efficiency, we can reduce material waste and reduce labor. If you have any sheet metal processing project need to find a Chinese supplier for support, please contact us. We Focus on OEM Sheet Metal Fabrication and comprehensive solution service for 12 years. We can support for all kinds of Stainless Steel Sheet Metal, cold plate surface processing, various Class chassis cabinets fabrication, intelligent equipment shell processing, assembly and testing, we will provide one-stop service.

In the process of sheet metal processing, sheet metal structure design is a complex systematic project, because sheet metal is a material that must be used in many processing, such as machine tools, cabinets, chassis, etc., and due to the special material properties of sheet metal itself and Processing requirements, there are strict requirements and standards for the structural design of sheet metal products. Therefore, in order to do a good job in the structural design of sheet metal processing, designers need to comprehensively consider various factors. So what issues should be considered in the design of sheet metal processing structures? Let me share some experiences below: Sheet metal processing structure design to consider the following issues: 1. It is necessary to consider the realization of the product structure, the convenience of processing and the economical and practical. The design of the sheet metal processing structure should conform to the principle of economy and practicality, and try to reduce the cost input in the process of sheet metal processing on the basis of ensuring the safety, quality and performance of sheet metal processing. Make sheet metal structures easier to achieve and facilitate processing during processing 2. Material processing requirements and cost control need to be considered. The requirements for the production materials should be clearly defined in the design drawings, and the requirements for the selection of materials should be well-prepared to ensure the selection of high-quality materials produced by regular sheet metal processing manufacturers, to ensure that the materials can meet the requirements of relevant standards in actual production, and to ensure that the design finished products can be meet the design performance requirements. And in the design, it is necessary to strictly control the punching and folding rate of the materials in the production of the product, and on the premise of ensuring the performance of the product, try to reduce the tediousness of the process in the actual production of the product, and enhance the operability of the design drawings. In addition, make sure that the material you choose has good strength, is easy to bend, and is easy to shape. 3. It is necessary to take into account the environmental requirements of the product. The sheet metal processing structure design should do a good job in the protection design of the product in terms of waterproof, dustproof and shockproof. For example, in the design of cabinet sheet metal processing, it is necessary to select high-quality materials, suitable surface treatment technology, and through stable and sealed structural design, to improve the product's performance in terms of corrosion resistance, mildew resistance, wear resistance, high temperature resistance, light resistance, etc. performance, improve product environmental adaptability. The above are some of the issues to be considered in the design of sheet metal processing structures. For different sheet metal processing products, designers need to consider different issues. Therefore, in a specific product project, designers need to adopt a targeted, feasible and practical design method according to the actual product design requirements, after comprehensively considering various factors, to solve various problems in the design, do Good sheet metal processing product design. If you have any sheet metal processing project need to find a Chinese supplier for support, please contact us. We Focus on OEM Sheet Metal Fabrication and comprehensive solution service for 12 years. We can support for all kinds of Sheet Metal enclosure/case/housing, cold plate surface processing, various Class chassis cabinets fabrication, intelligent equipment shell processing, assembly and testing, we will provide one-stop service.

As the popularity of new energy vehicles, home charging piles will usher in popularity in the future. Can the company's cables be used for home charging piles? Yes, the answer is yes. The company's products can be used in home charging piles and public charging piles. Thanks for your attention. Our factory specializes in supporting sheet metal processing services. If a company wants to develop a brand of household charging piles, we can assist in proofing, mass production, docking assembly and testing, and assist in various safety certifications according to the customer's design drawings.

Sheet metal fabrication is the process of forming metal sheets to the desired shape using different manufacturing methods. The completion of a product usually comprises of many steps – from cutting and bending to surface treatment and assembling DONGJI service include of creating metal parts or structures from raw metal materials. A number of fabrication techniques such as cutting, punching, bending and welding are used in the overall manufacturing process of metal products

what is lser welding Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is of thermal conduction type, that is, the surface of the workpiece is heated by laser radiation, and the surface heat diffuses to the interior through thermal conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse and other parameters to melt the workpiece and form a specific molten pool. Due to its unique advantages, it has been successfully applied in the precision welding of micro and small parts What is the difference between laser welding and ordinary spot welding in sheet metal processing? The difference between ordinary spot welding and laser spot welding: ordinary spot welding means that the welding method is simple, not the complicated one. It is a relatively economical welding method, and there are not many technical requirements. In the case of welding, there is also equipment for spot welding, which will be a little more complicated. In laser welding, the laser beam is used as the energy source for welding, and the light source is focused on the workpiece to be welded to form welding. This requires technology to carry a process. Normally, small enterprises use it less often. There will be more big companies. Ordinary spot welding is the spot welding between two workpieces. There will be a superposition of layers at the joint, such as the phenomenon of welding seams, which will make the appearance look ugly. However, laser welding can reduce the occurrence of this type of problems to a great extent. The gap of laser welding can be ignored, and the speed is relatively much faster than ordinary spot welding, and there is no need to do the treatment of aesthetics in the future. What services Dongji Sheet Metal Processing can provide? Dongji can weld stainless steel, all kinds of cold plate, aluminum, galvanized sheet and other metal The main welding equipment of Dongji are: laser welding machine, welding robot, argon arc welding machine, two-itch carbon welding machine. The main welding methods provided by Dongji are: segment welding, spot welding, full welding, argon arc welding, CO2 Protection welding, laser welding, etc. If you have any sheet metal processing project need to find a Chinese supplier for support, please contact us. We Focus on OEM sheet metal fabrication and comprehensive solution service for 12 years. We can support for all kinds of stainless steel sheet metal, cold plate surface processing, various Class chassis cabinets fabrication, intelligent equipment shell processing, assembly and testing, we will provide one-stop service.

In a significant breakthrough for the manufacturing sector, advancements in aluminum welding technology are paving the way for more efficient, precise, and sustainable production processes. As industries worldwide seek to enhance performance while reducing environmental impact, aluminum has become a favored material due to its lightweight, corrosion resistance, and high strength-to-weight ratio.   Aluminum welding, historically known for its challenges, has undergone a transformation with cutting-edge techniques like Friction Stir Welding (FSW) and Laser Beam Welding (LBW). These innovations have improved not only the quality of the welds but also reduced energy consumption and production costs.   Friction Stir Welding has emerged as a standout technique, particularly in the aerospace and automotive sectors. Unlike traditional welding methods, which melt the metal, FSW uses a non-consumable tool to join the metal without reaching melting point. This results in stronger welds, minimal defects, and a more uniform surface finish. Its applications range from building airplane fuselages to electric vehicle components, offering manufacturers a reliable and sustainable alternative to traditional methods.   Meanwhile, Laser Beam Welding is gaining popularity for its high precision and ability to weld thin sections of aluminum quickly. LBW's minimal heat distortion and ability to automate the welding process make it an ideal choice for high-volume production lines.   These technological innovations are also helping address one of the primary challenges in aluminum welding – the material’s high thermal conductivity. By improving heat management during the welding process, these advanced methods reduce the risk of warping and cracking, enhancing the overall durability of the welded parts.   "Aluminum welding has seen remarkable progress in recent years. The new techniques allow us to create stronger, more reliable products while optimizing energy efficiency," says John Stevens, a welding technology expert.   As industries continue to embrace these advancements, aluminum welding is poised to play a key role in shaping the future of modern manufacturing. From transportation to renewable energy projects, the impact of these innovations will be felt across a wide range of sectors, driving a new era of high-performance, environmentally friendly production.   This evolution in aluminum welding underscores the importance of investing in cutting-edge technology to meet the growing demands for sustainability, speed, and cost-effectiveness in manufacturing. With continued innovation, the future of aluminum welding holds immense potential for industries around the globe.   Guangdong Dongji Intelligent Equipment Co., Ltd., have mature aluminum welding technology and welding workers with over 5 years of experience.   Are you interested in us? If yes,please take action. Tel: 0086-0750-3596339 Whatsapp: 8613430262141 Email: djsales2@djmetalwork.com Website:https://www.djmetalwork.com

Sheet metal processing refers to the whole process of gradually changing the shape, size, material properties or assembly and welding of parts in a certain order in the production process until the sheet metal parts that meet the shape and size requirements are manufactured. For more complex structural parts, the production and processing generally need to go through many processes such as material preparation, unfolding, cutting blanks, forming and assembly. Combined to form a complete product manufacturing process, therefore, its processing process often includes the above-mentioned processing steps. What services Dongji Sheet Metal factory can provide? Dongji can work for stainless steel, cold plate, aluminum, galvanized sheet and other metal. Dongji is the high-techenterprise and engineering technical center with more than 100 technical patents .Providing all kinds of smart machines OEM and ODM customization from design drawing, to sample to mass production , as well as program development, docking, appearance design, Sheet Metal Fabrication , assembly, testing we will provide one-stop service ,We have obtained ISO9001, CE, SGS, TUV etc certificates, products exported to more than 50 countries and regions. Such as United States, Canada, Japan, Germany, Italy, Australia and Southeast Asia. Welcome to contact us ^_^

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CNC bending is used to form sheet metal into precise angles, channels, and structural shapes using a CNC press brake or CNC bending system. Instead of cutting a solid block like machining, CNC bending reshapes flat metal (such as stainless steel, mild steel, and aluminum) into functional 3D parts that fit assemblies, carry loads, protect components, or create clean product enclosures. Because the bend sequence, backgauge positioning, and stroke control are programmed, CNC bending is widely chosen when a project needs repeatable geometry, scalable output, and consistent fit across production batches. Dongji provides CNC bending solutions for enclosure parts, brackets, frames, and complex formed components. You can view our capability here: CNC bending. Where CNC Bending Is Most Commonly Used CNC bending is used across industries wherever sheet metal must be formed accurately and repeatedly. In enclosure and housing production, bending forms the corners, flanges, doors, and reinforcement ribs that turn flat panels into rigid cabinets. These parts are used in electrical enclosures, network cabinets, equipment housings, and many industrial control systems. In mounting and structural hardware, bending creates brackets, Z-plates, L-profiles, stiffeners, rails, and supports. These components are used to fix modules in position, hold assemblies square, and control spacing between parts. In functional protection and airflow design, bending is used to create covers, guards, and vented structures that protect internals while keeping service access simple. For electronics and power systems, bent sheet metal often provides a practical balance of strength, heat management, and manufacturability. From a market perspective, bending demand grows with broader sheet metal usage. One market report estimates the global sheet metal market size at about USD 181.8 billion in 2024 and projects continued growth through 2030. What CNC Bending Can Produce CNC bending can produce both simple and complex parts, depending on tool selection and bend sequencing. Typical CNC-bent parts include: Cabinets, panels, and enclosure shells with flanges and return edges for stiffness Brackets and mounts with controlled hole-to-bend relationships Frames, rails, and channels that act as structural supports inside equipment Covers and guards that require clean edges and stable geometry Multi-bend parts such as U-shapes, hat channels, and stepped profiles A practical advantage is that many features can be designed into a bent part to reduce welding or additional fasteners. A well-planned bend can add rigidity, create mounting surfaces, or form alignment tabs that speed up final assembly. Why CNC Bending Is Chosen CNC bending is used because it combines accuracy with production efficiency once the program and tooling are confirmed. Repeatability and fit controlPress brake systems can achieve strong repeatability when properly maintained and calibrated. One industry reference notes typical press brake accuracy around ±0.5 degrees in bend angle and about ±0.1 to 0.2 mm in linear positioning under good conditions. This matters for enclosure doors, mating panels, and bracket interfaces where small deviations can cause misalignment. Speed for production quantitiesWhen the bend sequence is standardized, CNC bending supports consistent throughput and reduces rework compared with manual forming. This is especially important when a program scales, because variation becomes expensive across large batches. Lower part cost versus heavy machiningFor many shapes, bending allows you to achieve 3D geometry without machining thick stock. This can reduce material waste and shorten lead times, especially for enclosure-type parts. Tooling flexibilityWith the correct punch and die selection, a press brake can handle a range of angles and radii without creating a dedicated die for every part. For large radii, step or bump bending can approximate curves through multiple controlled bends. Key Bending Methods And When They Are Used CNC bending is typically executed using one of several methods, depending on accuracy needs, tonnage limits, and material behavior. Bending Method How It Works When It Is Used Practical Note Air bending Sheet contacts die shoulders and punch tip, angle depends on depth Most common method for flexibility and efficient tonnage Tool angles do not need to match final angle Bottoming Sheet is pressed more firmly into the die Higher consistency than air bending for some setups Requires more force than air bending Coining Sheet is squeezed to match punch and die angles Highest precision needs and specific geometries Can require 5 to 10 times the tonnage of air bending Tonnage and die choice influence feasibility. A common guideline for mild steel air bending is the V-die opening starting point near 8 times the material thickness, based on 60,000 PSI tensile mild steel assumptions.When material changes, tonnage and die selection must be adjusted accordingly. Design Factors That Determine Success In CNC Bending CNC bending works best when the part is designed with bending physics in mind. The goal is to achieve the required geometry without distortion, cracking, or tolerance stack-up. Bend radius and material ductilityMinimum bend radius depends on material type and thickness. One industry guide notes that ductile materials such as aluminum and mild steel can often achieve tighter radii, while less ductile materials may require larger minimum radii to avoid cracking. Hole-to-bend and edge-to-bend relationshipsFeatures placed too close to the bend line can distort during forming. A common engineering rule is to keep holes a safe distance from the bend line, and typical bend-to-feature tolerances are often in the ±0.2 to 0.5 mm range depending on setup and complexity. Springback controlAfter bending, many metals partially return toward their original shape. CNC programs compensate by overbending slightly based on material data and bend method. Stable springback control is a major reason CNC bending is preferred for repeat production. Bend sequence and collision preventionComplex parts require a bend order that avoids tool interference and ensures the backgauge can locate the part accurately at each step. This is where CNC programming and experienced process planning directly improve yield. CNC Bending With Dongji: Practical Outcomes For Projects Dongji CNC bending is used to support projects that require consistent enclosure geometry, stable assembly fit, and scalable supply. For many customers, the practical value is reducing downstream issues such as misaligned doors, uneven gaps, and rework caused by bend variation. If you are planning a bulk order, we can support part evaluation, bend feasibility review, and process planning so the final design matches real fabrication conditions. For custom programs, we also support OEM/ODM coordination, including material selection, surface finishing planning, and assembly-oriented design suggestions. Learn more about our capability here: CNC bending. Conclusion CNC bending is used to transform flat sheet metal into precise, repeatable 3D parts such as enclosures, brackets, frames, channels, and protective covers. It is chosen for consistent accuracy, efficient production at scale, and strong assembly fit, especially when parts must be repeated across large batches. The best results come from matching bend method, tonnage, tooling, and design rules such as bend radius and feature spacing to the real material behavior. If you have a drawing, sample, or target application and want confirmation of bend feasibility, tolerance strategy, and the most efficient bend method, contact Dongji. Share your material, thickness, quantity range, and critical dimensions, and we will provide practical guidance and customization support through our CNC bending service.