CNC Milling
3-axis, 4-axis and 5-axis CNC milling for parts with complex geometries and tight tolerances — from single prototypes to production volumes.
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About Our Services
The Best China Precision Parts Machining Solution.
From single prototypes to full production volumes, Nachuan covers the complete precision manufacturing chain in-house — milling, turning, grinding, finishing, assembly and inspection — so your parts arrive production-ready, with one accountable partner from drawing to delivery.
- 3 / 4 / 5-Axis CapabilityComplex geometries & tight tolerances
- Prototype to Volume1-piece samples to mass production
- Free DFM FeedbackEngineer review before cutting begins
- Reports with ShipmentInspection data & material certificates
0-AxisCNC Machining Capability
±0 μmTolerance on Critical Dimensions
0%Final Inspection Before Shipping
0+Industries Served Worldwide
What We Do
Full-Service Precision Machining.
Seven core services under one roof — each one backed by engineering support, documented quality control and on-time delivery.
CNC Turning
Precision CNC turning and mill-turn processing for shafts, fittings, housings and all kinds of rotational parts, in steel, stainless, brass and aluminum.
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Grinding
Surface and cylindrical grinding for high-accuracy finishes and close tolerances — the finishing step that turns a good part into a precision part.
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Surface Finishing
Anodizing (clear, color, hard), electroplating, polishing, brushing, painting, powder coating, laser marking and silk-screening — one-stop finishing.
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Assembly & Value-Added
Part assembly, kitting, custom packaging and logistics arrangement — we deliver production-ready components, not just machined blanks.
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Quality Inspection
In-process and final inspection with vision measuring, hardness testers and CMM — material certificates and inspection reports with every shipment.
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Engineering Support & Free DFM
Free Design for Manufacturability feedback on your drawings — we help you machine smarter and cost less before cutting begins.
- Tolerance & GD&T optimization
- Material selection advice
- Cost-down redesign suggestions
- Fast prototype scheduling
- Sample reverse-measuring
- Sub-assembly engineering
How We Do
From Drawing to Delivery in 4 Steps.
A clear, engineering-led process — you always know where your order stands.
Send Drawing / Sample
Share your 2D/3D drawing — or ship us a sample to reverse-measure. Our engineers review feasibility right away.
DFM Review & Quotation
We check tolerances, materials and processes, flag cost-down opportunities, and return a detailed quotation.
Prototyping
First articles machined and fully inspected, with a dimensional report so you can validate fit and function.
Production & Delivery
Volume machining with in-process checks, final inspection, custom packaging and on-time global shipping.
Capability
Machining Capability & Materials.
Materials We Machine
Common grades in stock; special alloys sourced on request.
Aluminum 6061 / 7075
Stainless Steel 303 / 304 / 316
Carbon & Alloy Steel
Brass & Copper
Titanium
Engineering Plastics (POM / PTFE / Nylon)
| Item | Capability |
|---|---|
| CNC milling axes | 3-axis / 4-axis / 5-axis |
| Typical tolerance | ISO 2768-m; ±0.01 mm routine, ±0.005 mm with grinding |
| Surface roughness | Down to Ra 0.2 µm (ground / polished surfaces) |
| Part size range | From 1 mm miniature pins to large housings & impellers |
| Finishing options | Anodizing, Zn/Ni plating, polishing, brushing, painting, powder coating, laser marking, silk-screening |
| Inspection equipment | Vision measuring machine, hardness tester, calipers / micrometers, thread & plug gauges |
| Order volume | 1-piece prototypes to mass production |
Industries
Precision Parts for Demanding Industries.
For military, medical, robotics and automotive applications — where failure is not an option.
Military
Medical
Robot
Automotive
Electronic
Industrial
FAQ
Frequently Asked Questions.
Standard tolerances follow ISO 2768-m. We routinely hold ±0.01 mm and can reach ±0.005 mm on critical dimensions with grinding operations. Exact capability is confirmed during the DFM review of your drawing.
Yes. Send us the physical sample — we will measure it on our vision inspection equipment, produce a 2D/3D drawing for your confirmation, and quote from that.
There is no hard MOQ — we regularly support customers starting from 1-piece prototypes and scaling smoothly to tens of thousands of pieces in production.
Yes. In-process and final inspection records are kept for every order, and material certificates plus dimensional inspection reports are provided with shipments on request.
Ready to Start Your Precision Parts Project?
Send your drawing or sample today — get engineering feedback and a detailed quotation from our team.