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Home / Capabilities / CNC Machining / CNC Milling

Process Principle + Advantages

Milling is a machining method that uses rotating tools to remove material layer by layer. Tools can move flexibly under multi-axis coordination to achieve high-precision forming of complex structures and intricate contours. Depending on processing requirements, three-axis, four-axis, or five-axis milling can be employed to efficiently complete tasks ranging from flat surfaces to complex curved surfaces, offering high precision, stability, and excellent repeatability. We support 3-axis, 4-axis, and 5-axis machining to meet the manufacturing demands of complex parts and high-precision structural components.

Machining Capabilities and Equipment Showcase

CNC Milling Factory

Established 2000
Number of Machines 70+
Location Zhongshan

CNC Turning Factory

Established 2000
Number of Machines 30+
Location Zhongshan

Die Casting Factory

Established 2010
Number of Machines 10+
Location Zhongshan

Injection Molding Factory

Established 2008
Number of Machines 20+
Location Zhongshan

Forging Factory

Established 2014
Number of Machines 10+
Location Zhongshan

Machinable Materials

We support CNC milling of over 52 metals and engineering plastics, offering flexible and reliable material choices for diverse part production. Below is our material information:

  • Metals & Alloys
  • Plastics

Metals

Characteristics

Common Grades

CNC MachiningAluminum Alloys

Lightweight, excellent machinability, and superior surface treatment compatibility.

6061, 7075, 5052, 2024, 6082, 6063, 2011, 5083, MIC6.

CNC MachiningStainless Steel

High corrosion resistance, exceptional strength, and long-term stability.

303, 304, 316, 17-4PH,Duplex 2205

CNC MachiningCarbon Steel

High strength, stable processing, and excellent cost-efficiency.

1045 (45#), 1020,A36 (Q235), Q345.

CNC MachiningAlloy Steel

Wear-resistant, high fatigue strength, and optimized mechanical properties post-heat treatment.

4140, 4340, D2, M2.

CNC MachiningBrass

Excellent machinability, corrosion resistance, and high dimensional precision.

C360, C260, C280.

CNC MachiningZinc Alloys

Excellent fluidity, cost-effective, and ideal for precision aesthetic components.

Zamak 3 (Standard), Zamak 5 (High Strength), Zamak 2 (Wear Resistant),

CNC MachiningTitanium Alloys

High strength-to-weight ratio, superior corrosion resistance, and lightweight (high machining difficulty).

Ti-6Al-4V (Grade 5), Grade 2 (CP).

CNC MachiningInconel

High-temperature resistance, corrosion resistance, and fatigue resistance; engineered for high-strength parts in extreme environments.

Inconel 718

CNC MachiningInvar36

Extremely low coefficient of thermal expansion (CTE) at room temperature, excellent dimensional stability, and good ductility. It maintains nearly constant dimensions even during temperature fluctuations.

Invar36

Plastics

Characteristics

Common Grades

CNC MachiningABS

High toughness, easy to machine, and stable forming.

Prototypes, aesthetic housings, and functional validation parts.

CNC MachiningPC (Polycarbonate)

Optical transparency, high toughness, and impact resistance.

Transparent components, protective covers, and jig/fixture housings.

CNC MachiningPOM (Delrin/Acetal)

 Low friction coefficient, high wear resistance, and excellent dimensional stability.

Sliders, gears, bushings, and moving structural parts.

CNC MachiningPA (Nylon)

High toughness, wear resistance, and heat resistance

Fasteners, load-bearing components, and industrial machinery parts.

CNC MachiningPEEK

High-temperature resistance, superior chemical resistance, and extreme mechanical performance.

Aerospace, medical, and high-end precision engineering.

CNC MachiningPMMA (Acrylic)

High transparency and excellent visual clarity.

Light covers, windows, and display-grade structural parts.

CNC MachiningPVC / PTFE (Teflon)

Chemical/corrosion resistance and non-stick surface properties (PTFE).

Seals, gaskets, and corrosion-resistant structural components.

Manufacturable Product Categories

Structural Components

Brackets, bases, housings, connecting seats & more

Precision Functional Parts

Gears, bushings, connecting rods, rotating shafts & more

Cosmetic Parts

Decorative panels, frames, heat dissipation modules, outer casings & more

Molds & Fixtures

Mold cavities, clamps, locating blocks & other high-precision tooling

Tolerance and Quality Control

Tolerance and Quality Control

We have established a comprehensive quality management system, with an experienced team ensuring product precision and consistency throughout the entire process.

Our quality procedures include: IQC (Incoming Quality Control) → FAI (First Article Inspection) → In-process sampling inspection → OQC (Outgoing Quality Control). Each step adheres to strict standards, guaranteeing stable processes and consistent dimensions.

Equipped with CMMs, projectors, calipers, hardness testers, and other inspection tools, we provide CMM reports, dimensional reports, and full inspection records, maintaining tolerances within ±0.005–0.01 mm.

We support customized acceptance criteria and inspection plans tailored to client requirements, ensuring full traceability and reliable quality assurance from design to delivery.

Cooperation & Machining Process

Document Submission

Clients upload design files; we confirm machining requirements and provide a quote.

Process Evaluation

Engineers conduct DFM analysis and develop optimal machining plans.

Process Planning

Formulate milling process flows & complete CNC programming + tool path optimization.

Milling Operation

Performs precision milling on 3/4/5-axis machines with in-process inspection.

Post-Processing

Complete surface finishing (deburring, polishing, anodizing, etc.) as required.

QA & Delivery

Final inspection with CMM and other equipment, followed by qualified packaging & on-time delivery.

Surface Finishing Capabilities

We offer a full range of surface finishing services for CNC-machined parts, enhancing aesthetic appeal, corrosion resistance, and mechanical strength. For both metal and plastic components, we tailor the optimal process combination to specific applications.

Basic & Pretreatment Finishes

Designed for cleaning, deburring, and laying a solid foundation for subsequent surface finishing.

● Deburring — Removes sharp edges and burrs, enhancing part safety and appearance

● Cleaning — Eliminates oil, residues, and oxide layers, ensuring a clean surface

● Surface Preparation — Enhances adhesion for subsequent coating or electroplating

Mechanical Finishes

Physically enhance surface flatness, smoothness, and texture.

● Sanding / Grinding: Remove machining marks and burrs to improve surface flatness.

● Polishing: Reduces surface roughness while enhancing gloss and reflectivity.

● Sandblasting / Bead Blasting:  Removes contaminants and creates a uniform matte texture.

Chemical & Electrochemical Finishes

Enhance corrosion resistance, wear resistance, and conductivity through chemical reactions.

● Anodizing: Suitable for aluminum parts, improving corrosion resistance and surface texture.

● Black Oxide / Phosphating: Used for rust and wear protection on steel components.

● Passivation: Forms a protective film on stainless steel surfaces to improve corrosion resistance.

● Electroplating: Nickel, chrome, zinc plating, etc., to enhance wear resistance and conductivity.

Coating & Decorative Finishes

Provides protective or decorative layers for parts, improving appearance and durability.

● Powder Coating: Electrostatic powder application followed by high-temperature curing to create a corrosion-resistant protective layer.

● Painting / Coating: Liquid spray application offering flexible color and texture options.

● Electrocoating: Forms uniform, fine anti-corrosion layers through electrodeposition.

● Vacuum/Chrome Plating: Achieves metallic finishes and high reflectivity.

Functional & Marking Finishes

Used for identification, conductivity, or functional enhancement.

● Laser Marking: Engraves permanent identifiers such as serial numbers, logos, and QR codes.

● Silk / Pad Printing: Applies functional or decorative patterns and text.

Why Choose Our
CNC Milling Service

  • Excellent Service Support
  • Advanced Equipment & Quality Control
  • Flexible Machining Capability
  • Customization & Engineering Support

Excellent Service Support

We provide efficient, transparent one-stop processing services with rapid response throughout the entire process from communication to delivery.

24-hour quoting / rapid prototyping

Support for small batches and rush orders

Quality issue resolution with corrective and replacement solutions

Advanced Equipment & Quality Control

100+ CNC machines including lathes, milling machines, and 5-axis machining centers

Annual production capacity of 10 million parts

Precision ±0.005 mm, CMM full inspection

Comprehensive quality management system ensuring consistency

Flexible Machining Capability

Integrated multi-process solutions for diverse component requirements.

Full coverage: CNC, turning, milling, 5-axis, forging, casting

Supports component assembly and multi-part machining coordination

Capable of processing various metals and plastics

Customization & Engineering Support

Provides OEM/ODM services for collaborative development from design to delivery.

Supports custom production from drawings, samples, or concepts

Facilitates structural improvements and tailored machining solutions

Offers customized packaging and surface treatment options

FAQ

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