A Rectangular Copper Wire Machine is specialized equipment designed to convert round copper or brass wire into a rectangular cross-section with precise dimensions. Manufactured by Sky Bluer Environmental Technology Co., Ltd (Brand: CRM, China), these machines produce high-quality rectangular wire used in electrical, electronic, and industrial applications.
Unlike traditional round wires, rectangular wires allow for:
- Better space utilization in coils, transformers, motors, and inductors.
- Improved winding efficiency in electrical components.
- Lower resistance and superior thermal conductivity for heat-sensitive applications.

Applications of Rectangular Copper Wire
1. Electronics Industry
- Transformers, motors, inductors, and generators.
- Efficient electrical signal transmission.
2. Machinery Manufacturing
- Screws, nuts, springs, and precision mechanical components.
- Easy to cut, bend, and weld for custom industrial use.
3. Artwork and Decorative Applications
- Sculptures, ornaments, and high-end decorative items.
- Golden brass appearance enhances visual appeal.
Classification of Copper Wire
By Shape
- Flat, wedge, flat with natural arc, round, square, and rectangular.
By Material
- Pure copper, brass, nickel-copper, and other specialty alloys.
By Surface Treatment
- Tin-plated, silver-plated, gold-plated, or untreated.
Each classification offers distinct performance and visual characteristics suited for different applications.
Technical Overview of CRM Rectangular Copper Wire Rolling Mill
| Feature | Specification |
|---|---|
| Material | Copper, Brass, Nickel-Copper alloys |
| Input Wire Diameter | ¢1.0–¢6.0 mm |
| Output Wire Size | Width: 0.6–10 mm, Thickness: 0.4–6 mm |
| Design Speed | 200 m/min |
| Thickness Accuracy | ±0.005 mm |
| Width Accuracy | ±0.01 mm |
| Wire Shapes | Rectangular, Flat, Square, Wedge, Profile |
| Optional Processes | Annealing, Surface Treatment (plating) |

Production Process Highlights
- Wire Rolling: Precision carbide rolls gradually flatten the wire to exact dimensions.
- Annealing: Optimized heating cycles improve ductility and performance.
- Cooling & Lubrication: Ensures stable dimensions and surface quality.
- Automatic Measuring: Real-time monitoring of width, thickness, and straightness.
- Precision Take-Up: Smooth collection system reduces deformation and defects.
The process is fully customizable based on material type, shape, size, and end-use application.
Advantages of CRM Rectangular Copper Wire Machine
- High Electrical Conductivity: Maintains excellent current-carrying capacity.
- Material Versatility: Supports copper, brass, nickel-copper alloys, and specialty alloys.
- Customizable Dimensions: Width, thickness, and R-angle adjusted per project.
- Improved Efficiency: High-speed rolling with precise thickness and width control.
- Multi-Industry Application: Electronics, automotive, photovoltaics, medical, and decorative arts.
About Sky Bluer Environmental Technology Co., Ltd
We are a leading manufacturer of precision rolling mills in China with a wide range of products:
- Rectangular, flat, and square wire rolling mills
- Alloy and stainless steel wire precision rolling machines
- Special-shaped wire rod cold rolling mills
- Photovoltaic equipment: ribbon welding machines, calenders, annealing, tin coating, and cutting machines
Our machines deliver high-quality, cost-effective wire products for electronics, medical, automotive, mining, screening, and everyday industrial applications.




