CNC Machining Services in China

The Place Where Precision Extends Possibilities



CNC Machining

Our Expertise

die casting injection

Expertise in Mold Design

Whether you're familiar with die casting techniques or not, our R&D teams assist you from the very beginning - mold designing. Guided & assisted by DFM & mold flow tool, our teams offer you the most specialized technical drawings. Our DFM analysis is provided free!


Secondary Operations

Unlike regular factories who do only the die casting job for you, Bian Diecast is fully equipped - you can get your project done in one place! Die casting, CNC machining & finishing in one stop. We aim to save your cost and improve efficiency in the process.


NDA & Certified Files

We highly value your design artworks and are open to signing NDAs upon your request. Additionally, we can provide certified files for auto part, including PPAP, APQP, FMEA, MSA, and SPC, for our die-cast products.


Custom Packaging

Our service is detailed, right down to the packaging. You can choose the ideal packaging – bubble bags, cardboard boxes, plastic frames, dividers, and more – to suit your product's needs. We can also quickly accommodate logo printing or other custom requests on the packaging. Just ask!

CNC machine

CNC Machining Services Overview

CNC machining, as a vital process within aluminum die casting, allows for precision machining and adjustments to aluminum castings to meet the final product’s requirements and specifications. In the aluminum die casting process, the aluminum castings obtained after aluminum alloy is injected into molds often require secondary machining and finishing to achieve the desired precise dimensions, shapes, and surface quality. This is where CNC machining comes into play.

Reliable & Versatile Die-cast Aluminum for Selection

As a CNC machining manufacturer, Bian Diecast takes pride in offering a diverse spectrum of top-tier die-cast aluminum alloys to cater to a wide range of industrial demands. Our carefully curated selection encompasses three primary categories, including CNC milling service, CNC turning service and EDM machining, each distinguished by its unique set of properties and applications.

CNC Milling

CNC Milling

CNC milling workshop is equipped with milling machines used for flat milling, contour milling, hole drilling, and other operations. It is commonly employed in the production of parts such as flats, grooves, holes, and continuous threads.

CNC turning workshop

CNC Turning

The CNC turning workshop features lathes used for rotational machining, including external contour machining, end-face machining, and thread machining. It is frequently used for processing components like shafts.


EDM Machining

Wire EDM machining, also known as wire-cut electrical discharge machining, is an electrothermal cutting process. Compared to traditional mechanical cutting methods, Wire EDM machining offers higher precision and surface quality, and it can handle more complex geometric shapes.

CNC machining

CNC Machining Centers

Refine Your Parts Effortlessly

Following is a brief list of our CNC machining centers, capable of precision machining die-cast parts for a portfolio of sectors. Largest machining dimension up to 1000cm. Different kinds of cnc machines we supply are as follows:

CNC Machined Aluminum Alloys Advantages

Bring Your Die-cast Parts to Life with Ease


Flexible Customizations

CNC machining offers a wide range of design flexibility, allowing customers to customize their products according to individual needs. Different geometries, sizes, and configurations can be achieved through CNC machining to meet specific customer requirements.

High Productivity & Fast Delivery

CNC machining utilizes computer control systems, enabling automated and efficient production. Customers can obtain the aluminum cnc machining parts and products they need more quickly, thereby improving production efficiency. CNC machining can complete production within a short time, providing flexibility and fast delivery. Customers can adjust order quantities as needed without significant delays in delivery.

Repeatibility & Excellent Quality Control

CNC machining achieves high consistency and repeatability in production through automated and precise control systems. This ensures that the quality and specifications of each aluminum component meet design requirements.

Excellent Surface Quality

CNC machining offers precise cutting and surface treatments, resulting in excellent surface quality. This is crucial for products that require high smoothness or special surface finishing effects.

Resuable & Sustainable

Aluminum is a recyclable material that can be reused repeatedly. CNC machining of aluminum components promotes environmental sustainability by reducing waste and resource consumption. It aligns with environmental requirements and provides long-term benefits.

Custom Aluminum Die Casting Parts for A Wide Range of Industries

When precision and reliability matter, custom die cast parts are the go-to solution across various industries. At Bian Diecast, we specialize in crafting high-quality die casting aluminum housing components and custom die cast parts tailored to meet the unique demands of diverse sectors:
Die casting is widely used in the automotive sector to create components like engine and chassis parts, transmission components, electrical system parts, and body or interior/exterior parts. These components are known for their strength, durability, and precision, making them crucial for vehicle performance and safety.
In the lighting industry, die casting is utilized for producing components such as lamp housings, heat sinks, and reflectors. Die-cast parts offer excellent thermal conductivity, ensuring efficient heat dissipation in lighting fixtures, which is essential for their longevity and performance.
Die casting plays a significant role in the electronic industry by manufacturing enclosures, connectors, and heat sinks for electronic devices. These components require precise dimensions, high thermal conductivity, and electrical insulation, making die-cast parts an ideal choice.
Die-cast furniture parts are used in the production of chairs, tables, and various furniture pieces. These parts are appreciated for their durability, precise dimensions, and attractive surface finishes. They contribute to the aesthetics and functionality of furniture products.
In construction, die casting provides high-quality construction hardware, including door and window hardware, furniture hardware, and stairway components. These parts must meet strict standards for dimensions and durability to ensure they integrate seamlessly into construction projects.

Get CNC Machining Services Today!

Bian Diecast provides comprehensive assistance for your project, including mold design, die casting, CNC machining and surface finishing services. Don’t hesitate to get in touch with us!
metal die casting machine

Aluminum Die Casting Services in China

The Bian Diecast Differences

Bian Diecast, an aluminum die casting company, is located in Nanhai District, Foshan City, China. With over a decade of expertise in die casting, we are committed to providing comprehensive die casting services. Apart from specialized mold design and development, we have an advanced factory and workshops that integrate die casting, CNC precision machining, and surface finishing services, catering to diverse needs across various industries.

Currently, we have accumulated years of service experience in the automotive, lighting, electronics, furniture, and construction industries. With a solid foundation in project management, we aim to become a strategic supplier to many renowned global brands.

Project Management Excellence You Can Rely On

At Bian Diecast, efficiency & transparancy are at the core of our project mangement philosophy. Our goal is to empower our customers to closely monitor their orders while relieving them of the burdens of day-to-day project management tasks.
real time monitor

What Is a CNC Machine Used For?

A CNC (Computer Numerical Control) machine is a versatile and highly automated tool used for various manufacturing processes across industries.

1. CNC Milling

CNC milling machines are used to remove material from a workpiece using rotary cutters. They can produce complex shapes and designs with high precision.

2. CNC Turning

CNC turning machines rotate a workpiece on a spindle while a cutting tool removes material to create cylindrical shapes or intricate details.

3. CNC Routing

CNC routers are used for cutting, shaping, and engraving materials such as wood, plastic, and metal for applications in woodworking, signage, and prototyping.

4. CNC Grinding

CNC grinding machines are used to remove material and produce precision surfaces on workpieces through abrasive grinding wheels.

5. CNC Drilling

CNC drilling machines are used to create holes in workpieces with high accuracy and speed for applications in manufacturing, construction, and metalworking.

6. CNC Laser Cutting

CNC laser cutting machines use a high-powered laser beam to cut through materials such as metal, plastic, and wood with high precision for industrial and artistic applications.

7. CNC Plasma Cutting

CNC plasma cutting machines use a plasma torch to cut through electrically conductive materials like steel, aluminum, and copper for applications in fabrication, construction, and metalworking.

8. CNC Waterjet Cutting

CNC waterjet cutting machines use a high-pressure jet of water mixed with abrasive materials to cut through a wide range of materials including metal, glass, and stone.
cnc machining

How Does a CNC Machine Work?

A CNC (Computer Numerical Control) machine works by utilizing computerized controls to operate and manipulate cutting tools to create precise and intricate shapes on a workpiece. The basic operation of a CNC machine involves the following steps:
1. Design Input

The first step in using a CNC machine is to design a digital model or CAD (Computer-Aided Design) file of the part or component that needs to be manufactured. This file contains detailed information about the dimensions, geometries, and features of the part.

2. Programming

The CAD file is then converted into a CNC program or G-code, which is a set of instructions that guides the CNC machine on how and where to move the cutting tool across the workpiece. The CNC program contains commands for tool paths, cutting speeds, depths, and other parameters.

3. Machine Setup

The workpiece is securely clamped onto the machine’s worktable or fixture, and the cutting tool is loaded into the machine’s spindle. The operator inputs the CNC program into the machine’s control unit and sets up the cutting tool and workpiece coordinates.

4. Execution

Once the setup is complete, the CNC machine begins executing the programmed instructions. The machine’s motors and actuators move the cutting tool along the specified tool paths with high precision and accuracy based on the G-code commands.

5. Cutting Process

Depending on the type of CNC machine and cutting operation, the cutting tool removes material from the workpiece through processes such as milling, turning, drilling, routing, grinding, or laser cutting. The tool moves in multiple axes simultaneously to create the desired shape and features on the workpiece.

6. Monitoring and Inspection

Throughout the machining process, operators monitor the machine’s performance, inspect the workpiece for quality and accuracy, and make adjustments as needed to ensure the desired results.

7. Finishing and Unloading

Once the machining is completed, the workpiece may undergo additional finishing processes such as deburring, surface treatment, or inspection. The finished part is then removed from the machine for further processing, assembly, or use.

Advantages of CNC Machine Over Conventional Machine

Bian Diecast’s precision CNC machining services offer high-quality, accurate, and efficient manufacturing solutions for a wide range of industries.
CNC laser cutting


CNC machines offer superior precision and accuracy compared to conventional machines. They can produce complex shapes, intricate designs, and tight tolerances with consistency and reliability.

cnc milling-machine


High precision CNC machines are fully automated and controlled by computer programs, reducing the need for manual intervention and minimizing the risk of human error. This results in higher efficiency and productivity.

cnc drilling


CNC machines are highly versatile and can easily switch between different production tasks and processes by simply changing the CNC program. This flexibility allows for rapid prototyping, customization, and production of diverse parts.

cnc milling machine


CNC machines operate at high speeds and can perform complex machining operations in a fraction of the time taken by conventional machines. This leads to faster production cycles and reduced lead times.



Aluminum CNC machining can repeat the same machining processes with precision and consistency, ensuring uniform quality across multiple workpieces. This capability is especially useful for mass production and batch manufacturing.


Quality Control

CNC machines offer advanced monitoring and control capabilities to ensure the quality of machined parts. Real-time feedback and in-process inspection help detect and correct deviations, resulting in high-quality products.

FAQs on High Precision CNC Machine

What is CNC machining, and how does it complement the die-casting process?

CNC machining stands for Computer Numerical Control machining. It’s a highly precise manufacturing process that complements die casting by allowing for fine-tuning, shaping, and post-casting modifications of die-cast parts. CNC machining ensures parts meet tight tolerances and specified dimensions, enhancing their overall quality and functionality.

Can CNC machining be used for both aluminum and zinc die-cast parts?

Yes, CNC machining is versatile and applicable to both aluminum and zinc die-cast parts. It offers the flexibility to fine-tune and modify parts made from various materials, ensuring they meet specific project requirements.

Can CNC machining help in achieving tight tolerances for critical die-cast parts?

Absolutely, CNC machining is the go-to solution for achieving tight tolerances in critical die-cast parts. Its computer-controlled precision ensures parts conform to exact dimensional requirements, even for demanding applications in industries like aerospace and automotive. CNC machining enhances the quality, reliability, and performance of these precision components.

What types of CNC machining operations are available for die-cast parts?

CNC machining encompasses various operations, including milling, turning, drilling, and surface finishing. These operations can be tailored to meet specific design and functional requirements for die-cast parts.

How does CNC machining contribute to reduced lead times in die-cast part production?

CNC machining significantly contributes to shorter lead times by offering rapid setup, efficient tool changes, and high-speed cutting capabilities. This agility allows for quick adjustments in production schedules and accommodating urgent orders, making CNC machining a key factor in meeting tight project timelines.

Are there any material restrictions when it comes to CNC machining for die-cast parts?

CNC machining is versatile and compatible with a wide range of materials commonly used in die-casting, including aluminum, zinc, magnesium, and more. Material selection depends on your project’s specific requirements, and CNC machining can accommodate various materials with ease.

Can CNC machining be applied to produce prototypes of die-cast parts?

Yes, CNC machining is an excellent choice for producing prototypes of die-cast parts. Its ability to quickly and accurately machine parts makes it ideal for testing and validating designs before committing to mass production. This reduces the time and costs associated with creating physical prototypes.

What design considerations should be taken into account when planning CNC machining for die-cast parts?

Design factors such as material selection, tolerances, part complexity, and the desired surface finish should be considered when planning CNC machining for die-cast parts. Collaboration with experienced engineers can help optimize designs for efficient CNC machining.

How do you ensure consistency in CNC machining quality for die-cast parts?

We maintain quality consistency through rigorous process control, employee training, and adherence to industry standards. Our advanced measurement equipment verifies dimensions and shapes, ensuring each machined die-cast part meets specified requirements.

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