Precision CNC Machining for Custom Metal Parts
Henan Gnee New Material Co., Ltd is a CNC machining manufacturer producing custom metal parts to customer drawings - from one-off prototypes to repeat production orders. Our production floor runs 40+ CNC machines across turning, milling, 5-axis, Swiss, turn-mill and grinding, and we machine six metal families plus engineering plastics with tolerances down to ±0.01–0.02 mm on precision features.
Every part we produce is reviewed by our engineering team before production, machined on controlled CNC equipment, and inspected against your drawing before shipment. Send your 2D drawing or 3D CAD file - our team returns a DFM assessment and quotation, typically within 24 hours.
Six Core Processes
Turning, milling, 5-axis, Swiss, turn-mill & grinding under one roof
Six Material Families
Aluminum, stainless steel, steel, brass, copper, titanium & engineering plastics
Tight Tolerances
±0.01–0.02 mm on precision features; GD&T machined to drawing
Flexible Volumes
From 1-off prototypes to mass production - no large MOQ
Capability Snapshot
| Capability | What We Offer |
| Machining Equipment | [40+] CNC machines - turning centers, 3/4/5-axis machining centers, Swiss-type lathes & grinding machines (Fanuc / Mitsubishi / Siemens controls) |
| Machining Processes | CNC Turning, CNC Milling, 5-Axis CNC, Swiss CNC, CNC Turn-Mill, CNC Grinding |
| Materials | Aluminum, Stainless Steel, Steel, Brass, Copper, Titanium, Engineering Plastics |
| Part Size | Turning up to Ø400 × 1,000 mm; milling up to 1,000 × 800 × 600 mm (typical) |
| Workpiece Weight | Up to [200] kg (turning) / [500] kg (milling), typical |
| Tolerances | ±0.01–0.02 mm on selected precision features; ±0.05 mm standard linear |
| Surface Finishing | As-machined, bead blasting, brushing, polishing, anodizing, plating, powder coating, passivation |
| Production Volume | From 1-off prototypes to mass production |
| Lead Times | Prototypes [5–10] working days; small batch [2–3] weeks; production [3–6] weeks |
| Documentation | Inspection reports, material certificates, FAI on request |
| Quotation | DFM review and quotation within 24 hours |
Core Machining Processes
We match the machining process to your part geometry, tolerances, material and quantity. Our production floor runs the following core processes:
CNC Turning
Rotational and cylindrical components machined to tight roundness and diameter control.
Typical parts: shafts, pins, bushings, sleeves, spacers, fittings and threaded components.
CNC Milling
Prismatic components with holes, pockets, slots, contours, threads and multi-sided features, machined on 3-axis, 4-axis and 5-axis milling machines.
Typical parts: plates, brackets, housings, covers, blocks and flanges.
5-Axis CNC Machining
Complex geometries, angled surfaces, curved profiles and deep features machined in fewer setups, improving consistency between critical features.
Typical parts: impellers, complex housings, brackets with angled features, turbine and blisk components, curved structural parts.
Swiss CNC Machining
High-precision small-diameter and long slender components for demanding production applications, with tight concentricity and repeatability.
Typical parts: miniature shafts, small precision pins, needles, contact terminals, medical and dental components, long slender parts.
Learn more
CNC Turn-Mill
Turning and milling operations combined in a single setup for complex rotational parts that also require holes, flats, slots or off-center features - shorter lead time, fewer setups.
Typical parts: complex shafts with cross holes, threaded shafts with milled flats, valve bodies, couplings and fittings with mixed features.
CNC Grinding
Precision finishing for critical dimensions, hardened surfaces and tight surface-finish requirements (Ra 0.4–0.8 µm achievable on selected features).
Typical parts: precision shafts, spindles, guide bushings, hardened components with critical fits.
Learn more
Part Size, Weight & Production Volume
Typical size and weight limits by process (larger sizes on request - confirm with your specific part in the quotation):
| Capability | Typical Limit |
| Max Turning Diameter × Length | Ø400 mm × 1,000 mm |
| Max Milling Envelope (X × Y × Z) | 1,000 × 800 × 600 mm |
| Max Workpiece Weight | [200] kg (turning) / [500] kg (milling) |
| Minimum Thin-Wall / Small Feature | from [1.0] mm typical (per part geometry) |
| Production Mode | Typical Quantity | What to Expect |
| Prototype / Sample | 1–10 pcs | Fastest way to verify design, fit and function before production |
| Low Volume / Small Batch | 10–500 pcs | Pilot runs, spare parts, assembly components |
| Medium Batch | 500–5,000 pcs | Efficient setups with consistent repeat quality |
| Mass Production | 5,000+ pcs | Repeat orders, scheduled programs, stocking on request |
MOQ is flexible - we accept one-off prototypes and samples so you can validate your part before committing to a production order.
Materials We Machine
Material expertise covers the metals most commonly specified for CNC machined parts, sourced to the required grades with material certificates available on request.
| Material | Common Grades | Typical Machined Parts |
|---|---|---|
| Aluminum | 6061, 6063, 7075 | Brackets, housings, plates, heat sinks, structural components |
| Stainless Steel | 304, 316, 17-4 PH | Fittings, fasteners, components for corrosive and hygienic environments |
| Steel & Alloy Steel | 1018, 1045, 4140, 4340 | Shafts, gears, fixtures, machine components |
| Brass | C26000, C36000 | Fittings, connectors, terminals, precision components |
| Copper | C10100, C11000, C12200 | Busbars, terminals, electrical and thermal components |
| Titanium | Grade 2, Grade 5 | Aerospace and medical components, lightweight structural parts |
Learn more about the materials we machine→
Tolerances & Precision
We machine to your drawing - 2D drawings, 3D CAD files, GD&T requirements and technical specifications. Typical capabilities:
| Specification | Typical Capability |
| Linear Dimensions | ±0.05 mm |
| Precision Dimensions | ±0.01–0.02 mm |
| Hole Diameter | ±0.02–0.05 mm |
| Angular Tolerance | ±0.1°–±0.5° |
| Position Tolerance | Per drawing (GD&T) |
| Surface Roughness | Ra 1.6–3.2 µm typical; Ra 0.4–0.8 µm with grinding / polishing |
| Threads | Per specified thread standard |
| Flatness / Parallelism | Per drawing and part geometry |
Achievable tolerances are confirmed per part based on geometry, material and manufacturing method.
Secondary Operations & Surface Finishing
Secondary operations and surface finishes are coordinated so you receive parts ready for assembly:
Deburring & edge finishing
Bead blasting - uniform matte appearance
Brushing - directional texture
Polishing - smooth, reflective surface
Anodizing & hard anodizing (aluminum)
Powder coating
Zinc & electroless nickel plating
Passivation (stainless steel)
Black oxide
Assembly & kitting (on request)
Learn more about our surface finishing services→
Engineering Support & DFM
File formats accepted
STEP, STP, IGES, X_T, STL, DWG, DXF, PDF
Drawing review
geometry, material grade, tolerances, GD&T, thread and finish requirements
DFM feedback before quotation
manufacturability risks, suggested improvements, cost and lead-time impact
Prototype iteration
samples refined before production commitment
Confidentiality
drawings and designs treated confidentially; NDA available on request
Direct communication
English-speaking engineering support for overseas customers
Production Lead Times & Sample Policy
| Order Type | Typical Lead Time |
| Prototype / Sample | [5–10] working days |
| Small Batch | [2–3] weeks |
| Production Order | [3–6] weeks |
| Repeat Order | Per agreed schedule |
Lead times are confirmed at quotation based on part complexity, material, finishing and inspection requirements.
Sample policy: prototype and sample orders are welcome at any quantity. Sample cost is quoted separately and credited against the first production order when order quantity reaches [500] pcs. Samples are shipped worldwide by DHL, FedEx or UPS.
Industries We Serve
| Industry | Typical Parts |
| Automotive | Shafts, bushings, brackets, precision components for vehicle systems |
| Aerospace | Lightweight, high-strength parts for demanding aerospace applications |
| Robotics | Precision shafts, housings, joints and components for robotic systems |
| Industrial Equipment | Machine components, brackets, covers, manifolds, support blocks |
| Electronics | Heat sinks, connector housings, mounting plates, enclosures |
| Industrial Automation | Custom brackets, fixtures, shafts and mechanical components |
| Hydraulics | Precision components for hydraulic systems and equipment |
| Marine | Corrosion-resistant components for marine applications |
| Semiconductor | Precision components for semiconductor equipment and manufacturing systems |
Explore our CNC machining applications by industry→
Quality Assurance & Documentation
Quality is verified at three stages - incoming materials, in-process machining and final inspection - using calibrated equipment including CMM, micrometers, calipers, height gauges, surface roughness testers and thread gauges. Inspection reports, material certificates and FAI reports are provided on request; PPAP-level documentation is supported for production programs.
Learn more about our quality inspection process→
How to Start a Production Inquiry
1. Send your part
2D drawing or 3D CAD file, with material, quantity, tolerances and finishing requirements.
2. Review & quote
engineering team reviews manufacturability and returns a DFM assessment and quotation within 24 hours.
3. Produce & deliver
samples approved, production scheduled, parts inspected and shipped.
FAQ
Q: What CNC machining processes do you offer?
A: CNC turning, CNC milling (3-axis, 4-axis and 5-axis), 5-axis machining, Swiss CNC machining, turn-mill machining and CNC grinding, plus secondary operations and surface finishing.
Q: What is the maximum part size you can machine?
A: Typical limits: turning up to Ø400 × 1,000 mm, milling envelope up to 1,000 × 800 × 600 mm. Larger sizes on request - we confirm suitability for your specific part in the quotation.
Q: What tolerances can you hold?
A: ±0.01–0.02 mm on selected precision features, ±0.05 mm typical for standard linear dimensions. Position, angular and surface requirements are machined per your drawing and GD&T.
Q: What materials can you machine?
A: Aluminum, stainless steel, steel and alloy steel, brass, copper, titanium and engineering plastics, sourced to the grades you specify with material certificates available on request.
Q: What is your MOQ? Do you accept prototypes?
A: MOQ is flexible. We accept one-off prototypes and samples to validate design, fit and function before production, and we scale to mass production for repeat orders.
Q: What are your typical lead times?
A: Prototypes [5–10] working days, small batches [2–3] weeks and production orders [3–6] weeks, confirmed at quotation based on complexity, material and finishing.
Q: Can you manufacture from our drawings? What file formats do you accept?
A: Yes. We manufacture directly from your 2D drawings or 3D CAD files in STEP, STP, IGES, X_T, STL, DWG, DXF or PDF format, including GD&T and thread specifications.
Q: Do you provide inspection reports or material certificates?
A: Yes. Inspection reports, material certificates (MTC) and FAI reports are provided on request, and PPAP-level documentation is supported for production programs.
Q: How do you protect our drawings and designs?
A: All drawings and designs are treated confidentially and used only to produce your parts. Non-disclosure agreements (NDA) are available on request.