CNC Machining Service
Discover Sundi's CNC machining services for both low and high-volume production, offering tailored solutions for plastic and metal parts with advanced 3-, 4-, and 5-axis centers. Deliver your CNC machined parts at more favorable factory prices.
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No Minimum Order
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24/7 operation
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Tolerances down to ±0.005mm
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Response within 8 hours
Our CNC Machining Parts for Demanding Customers
CNC machining is a popular manufacturing process to make raw material into half-machined or final products, Workers use computer program software to input the instructions into the machine’s system. This process can be used in a wide range of complex types of machinery, such as CNC grinding, CNC milling, and CNC turning. With the help of CNC machining technology, Complex machining tasks can be finished in a single set of machines with precision and high velocity.
Seeking a reliable, responsive OEM supplier for precision plastic and metal machined components? Sundi is your ideal ISO 9001:2015 certified manufacturer, whatever small volume or mass quantity, we will turn your idea into tangible, high-quality parts.
Our engineering team boasts extensive experience in CNC machining projects that require the fabrication of complex shapes and high-tolerance parts. Our production department is equipped with advanced machining equipment from renowned brands like Haas, Sodick, and Seibu, ensuring the consistent delivery of high-quality machined parts. Prior to shipment, our QC department employs precision tools such as Zeiss’s Bridge CMM and Nikon’s Profile Projector to guarantee that your CNC parts meet all specifications and are free from any defects. We possess the capability to fulfill your design and manufacturing needs, helping you transform your ideas into reality.
The advantages of our CNC Machining Service
At Sundi, we specialize in small batch production, ensuring each piece is crafted with excellence and individuality. Our skilled team and efficient processes guarantee not only precision but also rapid delivery times. With our commitment to exceptional after-sales service and cost-effective solutions through custom jigs and optimized cutting tools, we ensure the highest quality without compromise, providing our clients with complete peace of mind.
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Small Batch Customization
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Rapid Turnaround
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Unmatched After-Sales Support
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Efficiency in Mass Production
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Advanced processing equipment
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Competitive price in the industry
Our Expertise in CNC Machining Processes
CNC Milling
CNC Drilling
CNC Turning
Materials and Diverse Coatings
It is the most widely used non-ferrous metal structural material in the industry. As a soft, lightweight and durable metal material, it is often used in aerospace, automobile, machinery manufacturing, shipbuilding and industrial development. The customized aluminum products processed by DADESIN have a wide range of appearance and color options and a complete range of surface treatments, which can meet the needs of different industries.

Aluminum
It is the most widely used non-ferrous metal structural material in the industry. As a soft, lightweight, and durable metal material, it is often used in aerospace, automobile, machinery manufacturing, shipbuilding, and industrial development. Customized aluminum products have a wide range of appearance and color options and a complete range of surface treatments, which can meet the needs of different industries.

Stainless Steel
SUS stands out for its impressive strength and corrosion resistance. However, its toughness presents a challenge in machining. It is predominantly used in the medical field for surgical and diagnostic equipment, in food processing machinery due to its non-reactive nature, and in automotive components for durability.

Copper
Copper is another favored material, particularly for its superior electrical and thermal conductivity, paired with ease of machining. This makes it perfect for electrical wiring components, heat exchangers, and decorative items, where conductivity and aesthetic appeal are required.

Tool Steel
This kind of material is known for its exceptional performance and durability, and mo re efficient when precision grind for exact dimensions and surface quality,making it ideal for cutting tools, molds,and CNC machining parts.

Nylon and ABS
These are chosen for their lightweight and flexibility, though they are not suitable for high-temperature applications. Their use is widespread in consumer electronics for non-critical parts and for creating prototypes due to their ease of machining and cost-effectiveness.

Carbon Fiber and Composite Materials
They are often the go-to options. While they offer an excellent strength-to-weight ratio, their machining process can be complex. These materials are widely used in aerospace for structural components, in automotive for high-performance parts, and in sports equipment for durability and weight reduction.
Diverse coatings significantly enhance CNC machined parts,like resistance to corrosion and wear but also enhance their visual appeal. The choice of coating depends on the environmental conditions and functional requirements of the part, ensuring optimal performance and longevity.
- Anodizing
- Galvanizing
- Nickel Plating
- Chemical Coating
- Powder Coating
- Black Oxide
- Hard Coating
- Chrome Plating

Anodizing
Primarily used for aluminum parts, anodizing enhances corrosion and wear resistance while also improving appearance. It allows for a range of color options, making it ideal for both functional and decorative applications. Thickness : Typically ranges from 5 to 25 microns,This coating can be customized for thicker layers in certain applications

Galvanizing
Applied mainly to steel components, galvanizing provides excellent protection against corrosion. It can be implemented through electro-galvanizing or hot-dip galvanizing, depending on the application requirements.
Thickness : Around 5 to 15 microns,Generally ranges from 45 to 75 microns, providing a thicker and more durable protective layer

Nickel Plating
Offers robust corrosion and wear resistance, commonly used in automotive and electronics components. Nickel plating also improves surface hardness, extending the lifespan of the parts.
Thickness : 5 to 500 microns, depending on the required wear resistance and application

Chemical Conversion Coating
This includes chromate coatings on aluminum, enhancing corrosion resistance and preparing the surface for further painting or coating. It's essential for parts exposed to harsh environments.
Thickness :Usually between 0.5 to 5 microns. While thin, this coating effectively protects against corrosion and prepares surfaces for painting

Powder Coating
Known for its tough, durable finish, powder coating is applied to a variety of metals. It enhances both aesthetics and corrosion resistance, suitable for parts requiring a high-quality surface finish.
Thickness :Generally between 40 to 80 microns. This thicker coating provides a robust and durable finish, suitable for a variety of applications

Black Oxide
Used on iron and steel, black oxide provides a certain level of corrosion resistance and reduces light reflection. It’s often used for parts where a matte black finish is desirable.
Thickness : Typically around 0.5 to 5 microns. This relatively thin coating mainly provides an aesthetic finish and some corrosion resistance

Hard Coating
Such as tungsten carbide coatings, which are used to significantly increase wear and scratch resistance. Ideal for parts in high-abrasion environments, ensuring longevity and durability.
Thickness:range of 2 to 10 microns. It is tailored to provide maximum wear resistance for specific applications

Chrome Plating
Often utilized for its decorative and corrosion-resistant properties, chrome plating offers a bright, shiny finish and good hardness. It’s popular in automotive and decorative applications.
Thickness :
- Decorative Chrome Plating Thickness: About 0.5 to 20 microns.
- Hard Chrome Plating Thickness: Ranges from 20 to 50 microns or more, providing a durable surface for wear-prone applications
Get your parts
into production today!
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Production process

1.Designing or Review Drawings
Create 3D models using CAD for precise CNC machining.

2.Fixture Design and Production
Design custom fixtures for efficient, precise part production.

3.Material Selection
Choose materials based on strength, cost, and end-use.

4.Machining and Manufacturing
CNC machines shape parts through milling, drilling, and turning.

5.Surface Finishing
Apply treatments like anodizing, and painting for durability, and aesthetics.

6. Inspection and Quality Control
Rigorous testing ensures parts meet all quality standards.
Let’s Make Custom CNC Machining Easy
We’re getting a globally optimal solution from automated engineering tools to delivery process ,committing to improve the machining efficiency and capacity.
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Upload Your RFQ
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Quote & Design Analysis
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Order & Fabrication
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Shipment
The Tight tolerance of CNC Machining Working
Precision CNC machining requires tight tolerances to ensure component accuracy and functionality, ensuring reliability in each part produced. If tighter tolerances are necessary, please provide complete, detailed drawings. Our team will then work with you to achieve the highest possible precision.
Allowed Variations in Millimeters for Specified Ranges of Nominal Lengths |
fine |
medium |
coarse |
very coarse |
|---|---|---|---|---|
| 0.5 up to 3 | ±0.005 | ±0.1 | ±0.2 | - |
| over 3 up to 6 | ±0.005 | ±0.1 | ±0.3 | ±0.5 |
| over 6 up to 30 | ±0.01 | ±0.2 | ±0.5 | ±1.0 |
| over 30 up to 120 | ±0.015 | ±0.3 | ±0.8 | ±1.5 |
| over 120 up to 400 | ±0.2 | ±0.5 | ±1.2 | ±2.5 |
| over 400 up to 1000 | ±0.3 | ±0.8 | ±2.0 | ±4.0 |
| over 1000 up to 2000 | ±0.5 | ±1.2 | ±3.0 | ±6.0 |
| over 2000 up to 4000 | - | ±2.0 | ±4.0 | ±8.0 |
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CNC Machining FAQ
"We specialize in a range of CNC services including milling, turning, drilling, and EDM. Our capabilities extend to complex geometries and precision parts."
"Lead times vary based on complexity and volume. We strive for efficient turnaround while maintaining high-quality standards."
"We follow strict quality control processes, including regular inspections and using precision measuring tools, to ensure every part meets your specifications."
your design is safe with us. We prioritize customer confidentiality and can sign a non-disclosure agreement (NDA) upon request to ensure your intellectual property remains secure throughout the production process.
"Our team can assist with design optimization for CNC machining, ensuring your parts are manufacturable and meet your requirements."