01 | Product Scope
Custom CNC Machining Parts from ZF Metal (China)
As an ISO 9001 certified direct manufacturing factory in China, ZF Metal specializes in high-precision custom CNC machining services for complex metal components. We serve global clients across aerospace, automotive, medical equipment, industrial automation and semiconductor industries, delivering tight-tolerance parts with consistent quality from prototype runs to high-volume production. Our in-house 3-axis, 4-axis and 5-axis CNC milling & turning centers support full OEM/ODM customization, paired with professional DFM optimization to reduce your manufacturing cost and lead time.
02 | Manufacturing Route
Core Operations Overview
Our CNC machining capabilities cover precision milling, turning, drilling, tapping, boring and threading operations, capable of processing parts with complex geometries, free-form surfaces and deep cavity structures.
01
Equipment lineup
3/4/5-axis vertical machining centers, CNC lathes with live tooling, Swiss-type lathes for micro parts
02
Tolerance capability
Up to ±0.005mm for precision parts, conforming to ISO 2768-f / IT5-IT7 grade
03
Material compatibility
Aluminum alloys (6061, 7075), stainless steels (304, 316), carbon steels (Q235, 45#), brass, copper, titanium alloys and engineering plastics
04
Standard workflow
Raw material verification → CNC programming & setup → rough & finish machining → deburring & edge breaking → in-process dimensional inspection → surface treatment → final quality audit
03 | Factory Fit
Why Partner with ZF Metal for Your CNC Machining Projects
Factory-direct cost efficiency
No middleman markup. Our in-house tooling and programming team optimizes tool paths and material utilization, cutting production costs by 15-25% compared with trading companies for medium and large batch orders.
Complex geometry expertise
5-axis machining capability enables one-setup processing of multi-sided, curved and undercut features, eliminating clamping errors and ensuring positional accuracy for critical components.
Flexible order scaling
We support MOQ as low as 1 piece for prototype validation, and can scale up to 100,000+ pieces for mass production with stable consistency.
Full-process traceability
Every production batch is tracked with unique work orders, from material incoming to final shipment, ensuring full accountability and quality traceability for regulated industries.
04 | Inspection Support
Quality Control & Official Documentation
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Inspection toolsCoordinate Measuring Machines (CMM), optical projectors, micrometers, height gauges, roughness testers
Inspection scopeDimensional tolerance, surface roughness (Ra 0.8-6.3μm standard), geometric tolerance (parallelism, perpendicularity, concentricity), appearance integrity
Official documentation availableMaterial Test Reports (MTR 3.1B), CMM dimensional inspection reports, surface treatment certificates, ISO 9001 certification, RoHS/REACH compliance reports, first article inspection (FAI) reports
05 | RFQ Checklist
Required Documents & Parameters for Fast DFM Review
To complete manufacturability analysis and accurate quotation within 24 hours, please provide:
- 2D/3D design files (STEP, IGES, X_T, DWG, PDF with dimensioned tolerances)
- Specified material grade and temper condition
- Dimensional tolerance requirements and critical feature annotations
- Order quantity (prototype, low volume, mass production)
- Surface finish specifications (anodizing, powder coating, electroplating, passivation, polishing, etc.)
- Application scenario and functional requirements (load-bearing, corrosion resistance, food-grade, etc.)
- Any special secondary operation requirements (heat treatment, tapping, marking, assembly)
06 | Buyer Questions
Custom CNC Machining FAQ
What tolerance levels can you achieve for precision CNC parts?
For standard machined parts we hold ISO 2768-m / IT7 tolerance; for high-precision components we can reach ±0.005mm / IT5 tolerance, verified by CMM inspection.
Do you offer 5-axis CNC machining for complex curved parts?
Yes. Our 5-axis machining centers can process free-form surfaces, impellers, turbine blades and multi-sided structural parts in a single setup.
What is the typical lead time for CNC prototypes and mass production?
Prototype orders are shipped in 3-7 working days; mass production lead time ranges from 10-25 working days depending on part complexity and quantity.
Can you handle small-batch orders under 10 pieces?
Absolutely. We support 1-piece minimum orders for design validation and prototype testing, with no forced volume requirements.
Ready to Start a Custom Metal Project?
Send drawings, samples, dimensions, material, quantity, and surface requirements. ZF Metal will review the process route and reply with practical manufacturing feedback.