The Top Chinese CNC Precise Machining Partner
Custom CNC Machining Services
From prototype to production, RPD Offer Fast and Cost-Effective One-Stop Rapid Prototyping Services. Free Engineer Support to Your Projects with Fast Turnaround Times. Reliability, Precision & Delivery.
- RPD Provide 24/7 Engineering Support All Year Round.
- Delivered in as fast as 3 days.
- 40+ CNC 3-Axis, 4-Axis & 5-Axis Machining Center, 10+ Swiss-type Lathes for Precision Components.
- Prototyping, Small Batch & Mass Production, No MOQ request.
- More Than 60+ Certified Materials for Choose. Offer CoCs, Material Certifications, Inspection Reports.
- CMM dimensional inspection.
- Expert DFM & process optimization
Custom Parts For Different Industries
Provide CNC Machining One-Stop Services for Different Industries
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CNC Milling Materials
RPD provides a broad range of engineering-grade metals, plastics, and composites for CNC milling. Each material is chosen for its precision, strength, and reliability in demanding environments. Our engineers will help you select the ideal material based on your design and production needs.
Contact us to explore more materials today!
Aluminum
Features: Excellent machinability , short processing time, high yield rate Superior surface treatment capabilities Moderate material cost Light weight with high strength-to-weight ratio Widely used in aerospace, automotive, drones, medical, industrial automation. Common alloys include 2024-T351, 5052, 5083-H111, 6061-T6, 6063, 7075-T6 etc. More Metals
Stainless Steel
Features: Excellent corrosion resistance High strength and good toughness Resistant to high and low temperatures Non-magnetic, clean, hygienic Surface polishable to mirror finish (Ra ≤ 0.4 µm) Non-porous, easy to clean, resists bacterial growth， complies with FDA, food-grade, and medical-grade certifications. Common SS include SS303, SS304, SS304L, SS316 etc. More Metals
Titanium
Features: Titanium alloys offer an exceptional combination of high strength-to-weight ratio, outstanding corrosion resistance, excellent biocompatibility, and performance across extreme temperatures, making them the material of choice for aerospace, medical implants, and high-end applications. Common Titanium include Grade 2, Grade 3 etc. More Metals
Brass
Features: Brass offer exceptional machinability and excellent surface finishes. It combines good corrosion resistance, electrical conductivity, and an attractive gold-like appearance, making it ideal for precision components, valves, fittings, electrical connectors, and decorative hardware. Common Brass include C36000, C37700 etc. More Metals
ABS
It features excellent machinability, good dimensional stability, small deformation of parts after processing, and easy guarantee of precision. It also has outstanding toughness and is less prone to cracking and chipping during processing. Suit for product prototypes, jigs and fixtures, model parts, instrument panels, shell samples, etc. More Plastic
POM/Delrin
Heterocrystalline thermoplastic, with high strength and rigidity Low friction coefficient, excellent wear resistance and self-lubrication Extremely low hygroscopicity, maintaining stable dimensions in humid environments, suitable for processing precision gears, bearings, sliding guides, snap-fit components, pump valve parts. More Plastic
Peek
High-temperature resistance & high mechanical strength and fatigue resistance comparable to alloy materials. Outstanding self-lubricating and wear-resistant properties Strong corrosion resistance, good flame retardancy. Good biocompatibility, capable of repeated high-temperature sterilization, suitable for aerospace structural components, medical implants, automotive engine parts, etc. More Plastic
Nylon
It features excellent toughness, self-lubrication, wear resistance, oil resistance and high impact strength (higher than ABS and POM, but lower than PC). Its heat deflection temperature is relatively low, making it suitable for processing gears, bearings, automotive parts, electrical enclosures, fasteners, etc. More Plastic
Carbon Fiber/CFRP
Extremely lightweight yet with extremely high rigidity, the strength-to-weight ratio far exceeds that of metals. It is commonly used in aerospace structural components, unmanned aircraft bodies, high-end automotive parts, and sports equipment.
Glass Fiber/GFRP
The strength and stiffness are slightly lower than those of carbon fiber, but it still has high strength and good corrosion resistance, while being at a lower cost. It is widely used in the manufacture of chemical-resistant components, electrical insulators, ship structures, and various lightweight components.
Rubber
Rubber (EPDM, FKM, NBR, silicone, CR) provides excellent weather, ozone, heat, and aging resistance. It is machined into sealing strips, bushings, dampers, oil seals, and medical seals — widely used in aerospace, medical, automotive, and chemical industries.
Would you like to start a project with us?
How can we work close with our client?
CNC Machining with Expert DFM & Engineering Support
What Our Engineering & DFM Support Includes?
Design Review
Analyze CAD models for manufacturability, tolerance feasibility, and material suitability
Material Selection
Recommend the optimal metal, plastic, or composite based on strength, cost, and application needs。
Design Optimization
Adjust sharp corners, deep cavities, thin walls, or hard-to-machine details for efficient production
Tolerance Analysis
Ensure critical dimensions are achievable while avoiding unnecessarily tight tolerances that drive up cost
Tool Access Check
Identify features that may require special tooling or 5-axis machining
Cost Reduction Suggestions
Propose design changes that reduce cycle time, tool wear, or secondary operations
How to work with RPD?
Upload Design Drawing
- Send 2D/3D drawing online or by email
- Design Drawing format: STEP, IGES, DWG, PDF, STL, etc
- If you have multiple files, zip them or send by email to ashley@rdpmfg.com
DFM Analysis & Quote
- Our engineer team will review & analyze every file carefully.
- Request more details or provide optimize solution.
- Offer accurate quote with 6 hours.
Order Confirmation
- Confirm order & delivery details, sign the contract.
- Arrange & start to production.
- Check and confirm all details during production, Track every steps.
Parts Delivered
- Control quality during production.
- Provide order photos,inspection sheet and other request documents.
- Pack & label orders, then shipping.
FAQs About Our CNC Milling Services
Why CNC Milling?
CNC milling delivers exceptional precision and repeatability, consistently holding tight tolerances for identical parts. It also enables fast production of complex 3D shapes and superior surface finishes across metals, plastics, and composites.
What kind of equipment do you use?
Our factory equipment with high-end 3-axis, 4-axis and 5-axis machining centers.
Do you offer surface finishing and assembly services after CNC milling?
Yes, exactly. We offer anodizing, sand blasting,plating, polishing, painting, and other surface treatments. Assembly of milled parts into sub-units is also available to streamline your production process.
What is your quality control system?
We operate under a rigorous Quality Management System (QMS) aligned with ISO standards. Our 5 Steps QC process is including IQC (Incoming Quality Control) , FQC (Final Quality Control) , OQC (Outgoing Quality Control) for routine production.
QE (Quality Engineering) / CAPA (Corrective and Preventive Actions) implemented throughout the entire product lifecycle, especially during the post-sale stage, to drive continuous improvement. Simply speaking 100% inspection before shipment to ensure zero defects.
What kind of quality assurance or warranty do you offer on orders?
One of the reasons engineers purchase from RPD is that we take on all the risks for you. We guarantee you’ll love what you get. Not happy with it? We’ll either redo it or give you a full refund. Your purchase is completely risk-free.
What's kind of CNC milling material do you offer? Any certificate?
There are a wide range of metals (aluminum, stainless steel, titanium, brass etc.) and plastics (ABS, POM, Nylon etc.). For more materials, pls check material guide. Material certifications (e.g., RoHS, REACH, ISO) can be provided upon request.
Which kind of file formats can I send for CNC milling projects?
We accept STEP, IGES, STL, DWG, DXF, and other common CAD formats.
CNC Resources
What is a CNC Machining Center?
A CNC machining center is an advanced, computer-controlled machine tool capable of performing multiple machining operations—such as milling, drilling, tapping, boring, and sometimes turning.
Ashely . March 9, 2026
How many kinds of Types in CNC Machining Centers?
There are at least 5 different CNC lathes type in Machining Centers: Vertical Machining Center, Horizontal Machining, 5-Axis Machining Center, Gantry / Bridge Mill, Turn-Mill Center (Multi-Tasking).
Ashely . March 9, 2026
What is CNC Machining?
CNC (Computer Numerical Control) machining is a subtractive manufacturing process in which pre-programmed computer software controls the movement of factory tools and machinery to remove material from a solid workpiece, creating a finished part or product.
Ashely . March 9, 2026