Products
Custom Stainless Steel CNC Machining Parts
We manufacture custom stainless steel CNC machined components according to customer drawings, 3D models or samples. Available component types include shafts, pins, sleeves, threaded fittings, brackets, mounting components, mechanical housings, and pump and valve parts. CNC turning and milling processes are selected according to component geometry, dimensions and technical requirements.
Features
Custom Stainless Steel CNC Machining Parts
Custom stainless steel CNC machining parts manufacturer in China, supplying precision CNC turned and milled stainless steel components made to customer drawings. Available materials include SUS 303, 304, 304L, 316 and 316L. CNC turning capacity reaches 320 mm in maximum diameter and 750 mm in maximum length, while CNC milling capacity reaches 1000 × 600 × 500 mm. Standard machining tolerances are ±0.05 mm, with precision machining down to ±0.01 mm depending on part geometry and requirements.
01. Product Overview
We manufacture custom stainless steel CNC machined components according to customer drawings, 3D models or samples.
Available component types include shafts, pins, sleeves, threaded fittings, brackets, mounting components, mechanical housings, and pump and valve parts.
CNC turning and milling processes are selected according to component geometry, dimensions and technical requirements.
02. Material & Machining Specifications
Stainless Steel Material Options
| Material | Available Grade |
|---|---|
| Stainless Steel 303 | SUS 303 |
| Stainless Steel 304 | SUS 304 |
| Stainless Steel 304L | SUS 304L |
| Stainless Steel 316 | SUS 316 |
| Stainless Steel 316L | SUS 316L |
Additional materials listed for special requirements include 316Ti and 17-4PH. Availability should be confirmed against the component drawing.
Machining Capacity & Tolerances
| Item | Available Specification |
|---|---|
| CNC turning – maximum diameter | 320 mm |
| CNC turning – maximum length | 750 mm |
| CNC milling capacity | Up to 1000 × 600 × 500 mm |
| Standard dimensional tolerance | ±0.05 mm |
| Precision machining tolerance | Up to ±0.01 mm, depending on geometry and requirements |
| Standard surface roughness | Ra 1.6–3.2 μm |
| Fine-machined surface roughness | Ra 0.8–1.6 μm |
Maximum turning diameter and length are separate capacity limits, not a guarantee that both can be achieved simultaneously on one component. Final tolerances and surface finish depend on part geometry and specified machining requirements.
03. Customization & Machining Options
We provide different machining processes for stainless steel components with varying structures and technical requirements.
| Machining Process | Available Operations |
|---|---|
| CNC turning | Shaft, pin, sleeve and cylindrical component machining |
| CNC milling | Flat surfaces, slots, pockets and complex profiles |
| Multi-axis machining | 3-axis, 4-axis and 5-axis machining |
| Drilling | Standard and deep-hole drilling |
| Thread machining | Tapping, threading and thread milling |
| Boring | Internal hole machining |
| Swiss-type turning | Available |
Surface Finishing Options
| Finish | Available Option |
|---|---|
| Passivation | ASTM A967 |
| Electropolishing | Available |
| Mechanical polishing | Available |
| Sandblasting | Available |
| Bead blasting | Available |
| Brushing | Available |
| Laser marking | Available |
Material grade, component dimensions, hole positions, thread specifications and surface finishing can be specified according to supplied drawings and project requirements.
04. Manufacturing Process & Quality Control
We review customer drawings and assess manufacturing feasibility, including material selection, component geometry, dimensional tolerances and finishing requirements.
Our manufacturing and inspection capabilities include:
| Manufacturing & Inspection Item | Available Capability |
|---|---|
| CNC equipment | CNC lathes and CNC machining centers |
| Machining configurations | 3-axis, 4-axis and 5-axis |
| Drawing review | DFM and machining feasibility assessment |
| Dimensional inspection | CMM, digital height gauges and precision micrometers |
| Optical measurement | Optical measuring equipment |
| Surface inspection | Surface roughness measurement |
| Material documentation | MTC EN 10204 3.1 |
| Quality records | Dimensional inspection reports and traceability records |
Material certificates and inspection documentation can be arranged according to order requirements. Specific inspection points and acceptance criteria are established against approved technical drawings.
05. Sampling & Bulk Supply
We support prototype development, small-batch orders and repeat production of custom stainless steel CNC machining parts.
| Order Stage | Reference Lead Time | Supply Arrangement |
|---|---|---|
| Prototype machining | 3–7 days | Sample production based on drawings or supplied models |
| Batch production | Typically 15–20 days | Depends on part complexity and order quantity |
| Minimum order quantity | Case-dependent | Determined by component complexity, material and order quantity |
Before production, we review the drawings and confirm material, machining requirements and finishing specifications.
For export orders, packaging options include individual part protection, anti-scratch packaging, protective film and export cartons.
06. Frequently Asked Questions
1. Which stainless steel grades can you machine?
Our listed materials include SUS 303, SUS 304, SUS 304L, SUS 316 and SUS 316L. Additional options include 316Ti and 17-4PH, subject to project requirements.
2. What is your maximum CNC machining size?
CNC turning supports a maximum diameter of 320 mm and maximum length of 750 mm. CNC milling capacity reaches 1000 × 600 × 500 mm. Actual feasibility depends on component geometry and machining setup.
3. What machining tolerances can you achieve?
Our standard dimensional tolerance is ±0.05 mm. Precision machining can reach ±0.01 mm depending on part geometry and requirements. Critical dimensions should be identified on the engineering drawing.
4. Which drawing formats do you accept?
We accept STEP, IGES, X_T, PDF, DWG and DXF files for drawing review and manufacturing evaluation.
5. Can you provide surface finishing for stainless steel parts?
Yes. Available options include passivation to ASTM A967, electropolishing, mechanical polishing, sandblasting, bead blasting, brushing and laser marking.
6. Can you support both prototypes and repeat production?
Yes. We support prototype machining, small-batch orders and repeat production. Prototype lead time is typically 3–7 days, while batch production is typically 15–20 days, depending on complexity and quantity.
07. Request a Quote
Send us your 2D drawings, 3D models or sample photos to discuss your stainless steel CNC machining requirements.
Please include the material grade, critical dimensions and tolerances, surface finishing requirements and estimated order quantity where available.
Our team will review the technical requirements, evaluate machining feasibility and provide a quotation based on your component specifications.
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