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Metal Bending Parts
-- Steady & Reliable Manufacturer --
Yuyao Hongli Optoelectronics Co., Ltd. is an industry-leading manufacturer of custom Metal Bending Parts, producing high-strength brackets, mounting channels, sheet metal enclosures, and structural frames. Located in Yuyao, Zhejiang, our 5,000-square-meter facility houses electro-hydraulic CNC press brakes, high-tonnage bending machines, automated robotic bending cells, and multi-station stamping presses. We process cold-rolled steel, stainless steel, aluminum, galvanized steel, brass, and copper sheets up to 8.0mm in thickness. Capitalizing on automatic springback compensation technology and precise tooling setups, our bent parts guarantee consistent angular accuracy and bend radius retention. Partner with Yuyao Hongli for full DFM support, custom tooling, robotic welding, and direct-factory contract manufacturing.
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Stamped circular parts with holes
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Stamped square parts with holes
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Stamped ultra-thin parts
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Stamped small square parts
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Stamped miniature parts
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Stamped bendable strip-shaped parts
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Square-shaped precision machined stamped parts
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Stamped chassis parts
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Circular stamped parts with a central hole
MANUFACTURING CAPABILITIES
Equipment and process capabilities
From mold design to batch stamping, we cover production needs of different tonnages and precision levels.
- 01
CNC Electro-Hydraulic Press Brake Bending
Multi-axis CNC press brakes execute complex multi-angle bends across long sheet metal panels with precise angular control and zero cracking along bend lines.
- 02
Robotic Automated Cell Bending
6-axis articulated robots handle heavy or high-volume sheet metal panels through press brake operations, eliminating manual handling errors and driving consistency.
- 03
Heavy-Gauge Plate Bending & Forming
High-tonnage bending equipment forms thick hot-rolled carbon steel, stainless steel, and aluminum plates into heavy structural channels and equipment mounts.
- 04
In-Die Press Bending & Stamp Forming
Progressive die bending stations perform simultaneous piercing, notching, and radius forming on mass-produced small-to-medium metal brackets.
SPEC · Overview of Key Equipment Parameters
| Equipment Type | Tonnage / Specification | Machinable Material | Typical Processing Thickness |
|---|---|---|---|
| CNC Electro-Hydraulic Press Brake | 50T - 250T CNC Multi-Axis Press Brake | SPCC, SUS304, Aluminum, SGCC, Brass | 0.5mm - 8.0mm Sheet Stock |
| Robotic Bending Cell | 6-Axis Industrial Robot + CNC Brake | Sheet Metal Panels & Enclosures | 0.8mm - 4.0mm High-Volume Parts |
| Heavy Hydraulic Press Brake | 300T High-Tonnage Plate Bender | Carbon Steel, HSLA Steel, Heavy Stainless | 3.0mm - 12.0mm Heavy Plate |
| In-Die Progressive Bending Press | 45T - 200T Stamping Press | Continuous Coil Stock (Steel, Copper) | 0.3mm - 3.5mm Strip Metal |
QUALITY CONTROL
Full-process quality control system
From incoming material inspection to full outgoing inspection, key processes are equipped with inspection points to ensure batch consistency.
3D Laser & Protracting Angular Verification
Validating strict bend angles and flange dimensions across broad sheet metal parts.
- Laser angle measurement systems verifying bend accuracy within 卤0.2 degrees.
- 3D Coordinate Measuring Machine (CMM) checking hole-to-bend distance and GD&T alignment.
- Go/No-Go check fixtures for 100% inspection of mounting hole patterns post-bending.
Material Springback & Bend Radius Inspection
Monitoring material temper variations to prevent over-bending or radius fractures.
- Optical magnification inspection checking for micro-cracks along outer bend radii.
- Laser profilometer flatness measurement across wide un-bent sheet surfaces.
- Tensile and hardness testing on raw metal coils to calibrate springback parameters.
Coating Thickness & Weld Integrity Audit
Checking surface protection layers and structural weld seams on bent sub-assemblies.
- XRF coating thickness checks for powder-coated, e-coated, or zinc-plated bent assemblies.
- Destructive and non-destructive weld seam testing (MIG/TIG/Spot welding).
- Neutral Salt Spray (NSS) testing per ASTM B117 for outdoor brackets.
SURFACE FINISHING
Surface treatment process
Depending on the usage environment and appearance requirements of the parts, we offer anti-corrosion, wear-resistant, or decorative surface treatment solutions.
| Finishing Process | Applicable Material | Primary Function | Typical Application |
|---|---|---|---|
| Electrostatic Powder Coating | SPCC Carbon Steel, Aluminum, Stainless Steel | Applies a thick, durable, scratch-resistant, weather-proof protective coating | Outdoor electrical enclosures, HVAC brackets, industrial machinery frames |
| Trivalent Zinc Plating (Clear/Yellow/Black) | Cold-Rolled Steel, Hot-Rolled Steel | Delivers economical corrosion resistance with a bright, clean metal finish | Internal chassis brackets, mounting channels, server rack hardware |
| Chemical Anodizing (Clear / Black) | 5052, 6061 Aluminum Sheets | Enhances corrosion resistance, increases surface hardness, and adds decorative color | Electronic chassis panels, LED fixture brackets, architectural trims |
| Pickling & Passivation | 304, 316 Stainless Steel | Removes thermal scale from bend zones and restores native passive rust barrier | Sanitary equipment brackets, marine hardware, outdoor mounting plates |
Note: The above is a standard process list. Specific film thickness, color, and salt spray resistance rating can be customized according to customer drawings.
APPLICATIONS
Main application areas
Our products are widely used in industries that require high structural strength and precision consistency.
Electrical Cabinets & Industrial Enclosures
Precision-bent sheet metal housings and mounting plates engineered for electrical containment.
- Control cabinet door panels, frames, and sub-plates
- Server rack mounting drawers, rails, and chassis shields
- Power distribution box enclosures and junction brackets
Automotive Chassis & Heavy Machinery
Heavy-gauge bent metal brackets designed to withstand dynamic vehicle vibration and mechanical stress.
- Automotive chassis reinforcement crossmembers and engine brackets
- Commercial truck bumper supports and battery tray brackets
- Construction machinery guard frames and pivot mounts
HVAC, Building Construction & Energy Systems
Rust-resistant bent metal hardware engineered for infrastructure installation.
- HVAC duct hanging channels and damper framing
- Solar panel mounting purlins and roof mounting clamps
- Building wall cladding brackets and joist support ties
PRODUCTION / FACTORY ADVANTAGES
Factory production advantages
With its own factory and equipment, the company ensures stable delivery times and controllable costs.
20+ Years of Sheet Metal Bending Expertise
Yuyao Hongli brings over two decades of technical mastery in material springback control, bend radius selection, and tool design.
Robotic & CNC Multi-Axis Press Brake Capabilities
Our facility houses 6-axis robotic bending cells and CNC press brakes capable of handling parts up to 3,000mm in length.
Full In-House Fabrication & Assembly
From laser cutting and press brake bending to robotic welding and surface powder coating, we offer complete OEM manufacturing.
CUSTOM MANUFACTURING PROCESS
Customized production process
From receiving drawings to batch delivery, standardized processes ensure traceability at every stage.
1. Print Review & Springback DFM Analysis
Engineers analyze sheet metal prints, calculate bend deduction/allowance, and configure CNC press brake tooling paths.
2. Flat Blank Cutting & Deburring
High-power fiber lasers cut precision flat blanks, which undergo vibratory deburring before entering the bending line.
3. CNC Press Brake Setup & FAI Sign-Off
Operators set up segmented precision punch/die sets; trial bent parts undergo 3D CMM and laser angle inspection.
4. Mass CNC / Robotic Bending & Welding
CNC press brakes or robotic bending cells form mass production runs, feeding directly into secondary welding or hardware insertion.
5. Surface Powder Coating & Export Packaging
Bent components undergo powder coating or zinc plating, receive 100% final quality checks, and are packaged on export pallets.
FAQ
Frequently Asked Questions
Here are some questions that clients often ask before cooperating with us.
How do you compensate for material springback during metal bending?
Our CNC press brakes feature dynamic laser angle sensors and automatic crowning systems that adjust punch depth in real-time based on material thickness and temper.
What maximum metal thickness and length can you bend?
We can bend carbon steel up to 8.0mm, stainless steel up to 6.0mm, and aluminum up to 10.0mm, with maximum panel lengths up to 3,000mm.
How do you prevent surface scratching on aluminum and stainless steel during bending?
We use non-marking polyurethane die films, micro-polished punch tools, and protective vinyl masking films on sensitive sheet metal surfaces.
Can you install PEM studs and nuts on bent metal parts?
Yes, we have dedicated hydraulic insertion presses to press-fit PEM nuts, standoffs, and studs before or after bending.
About Us
Yuyao Hongli Optoelectronics Co., Ltd.
Yuyao Hongli Optoelectronics Co., Ltd. is a comprehensive enterprise with over 20 years of experience in the manufacturing industry. Located in the Yangming Science and Technology Industrial Park of Yuyao, Zhejiang Province, it enjoys convenient transportation and a solid industrial foundation. As a famous China Metal Bending Parts Suppliers and Metal Bending Parts Factory, founded in 2000, formerly known as Yuyao Hongli Optoelectronics Educational Instruments Co., Ltd., the company is wholly owned by a natural person, with Xie Gang as the legal representative. Its registered capital of 500,000 yuan has been fully paid up, and it has maintained its continued development through stable operations.
Relying on a 5,000-square-meter modern factory and multiple stamping workshops, the company has built a diversified product system. Its core businesses cover the manufacturing, processing and wholesale and retail of educational instruments, optical instruments, household electric heaters, small household appliances, auto parts, hardware and plastic products, etc. At the same time, it operates and acts as an agent for the import and export trade of goods and technologies, and its products are sold at home and abroad.
The company brings together industry management elites and senior engineers to form a mature R&D and management team. Adhering to the business philosophy of "integrity and pragmatism," it is committed to providing customers with high-quality products and comprehensive after-sales service. Leveraging its diversified portfolio, certification guarantees, and import/export advantages, the company actively expands cooperation both domestically and internationally, and is willing to establish long-term and stable trade partnerships with partners from all sectors, continuously striving forward in the wave of intelligent and high-end development in the manufacturing industry.
Relying on a 5,000-square-meter modern factory and multiple stamping workshops, the company has built a diversified product system. Its core businesses cover the manufacturing, processing and wholesale and retail of educational instruments, optical instruments, household electric heaters, small household appliances, auto parts, hardware and plastic products, etc. At the same time, it operates and acts as an agent for the import and export trade of goods and technologies, and its products are sold at home and abroad.
The company brings together industry management elites and senior engineers to form a mature R&D and management team. Adhering to the business philosophy of "integrity and pragmatism," it is committed to providing customers with high-quality products and comprehensive after-sales service. Leveraging its diversified portfolio, certification guarantees, and import/export advantages, the company actively expands cooperation both domestically and internationally, and is willing to establish long-term and stable trade partnerships with partners from all sectors, continuously striving forward in the wave of intelligent and high-end development in the manufacturing industry.
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