01 / Watch components
Cases, bezels and crowns
Stainless watch components where visible surfaces, fit and finishing are reviewed together.
Watch case manufacturingStainless steel CNC machining
Stainless steel parts,
machined to your drawing.
Custom turning, milling, five-axis and automatic lathe work for 303, 304, 316, 316L and 904-series stainless steel components.
Grade selection
Start with the grade.
Confirm the application.
The grade name is only one part of the specification. State the exact alloy, environment, finish and documentation requirement so the quote reflects the part you need.
| Stainless grade | General use in custom parts | Confirm in the RFQ |
|---|---|---|
| 303 | Parts where machinability is a priority and the application permits a free-machining grade. | Exact alloy, application, material record and any restriction on sulfur-bearing grades. |
| 304 | General industrial and consumer hardware requiring a clean stainless finish. | Exposure, strength, finish and inspection requirement. |
| 316 / 316L | Parts reviewed for improved corrosion context, including customer-defined flow hardware. | 316 or 316L, medium or coolant, sealing faces and material documentation. |
| 904-series | More demanding corrosion contexts and premium product specifications. | Exact grade, specification, stock, documentation, finish and validation responsibility. |
904-series note: 904-series is a family reference, not a substitute for an exact material callout. Confirm whether the drawing requires 904, 904L or another grade, including the applicable standard and material record.
Stainless steel process routes
Turning, milling
and multi-face work.
CNC turning is reviewed for round features, threads and bores. CNC milling is reviewed for flats, pockets, slots and multi-face features. Five-axis machining may suit compact parts with features on several sides.
- CNC turning and automatic lathe review
- CNC milling and five-axis machining
- Drilling, tapping and threaded interfaces
- Precision grinding and dimensional inspection
Typical stainless parts
From visible hardware
to functional interfaces.
Stainless grades can suit different combinations of appearance, corrosion context and machinability. The drawing and application remain the deciding inputs.
02 / Liquid cooling
316 stainless bodies and ports
Drawing-based flow hardware with customer-defined ports, threads and sealing requirements.
Liquid-cooling components03 / Turned hardware
Small precision parts
Screws, pins, spacers and fittings where material grade, thread and repeatability matter.
Custom turned parts04 / Material guide
Compare 303, 304, 316L and 904
Use the buyer guide to prepare the grade, exposure, finish and documentation questions before quotation.
Read the grade guideFinishing and inspection
Define the surface.
Protect the interface.
Finishing can change appearance, dimensions and fit. Identify visible faces, critical surfaces and areas that must remain uncoated before the process route is fixed.
Finishing scope: Machining and inspection are handled in our Dongguan workshop. Polishing, brushing, blasting and engraving can be completed in-house. PVD, plating and stone setting are coordinated with qualified finishing partners where required. State color references, masking, roughness and acceptance requirements in the RFQ.
Stainless steel CNC machining questions.
Which stainless steel grades can you machine?
We review 303, 304, 316, 316L and 904-series stainless steel against the drawing. For 904-series material, the exact grade, specification, stock condition and documentation requirement must be confirmed in the RFQ.
Can you machine 316L parts for liquid-cooling applications?
Drawing-based 316L stainless components can be reviewed for liquid-cooling applications. Port, thread, sealing, pressure, leakage-testing and system-qualification requirements must be defined by the customer for each project.
Can material documentation be provided?
Material documentation can be coordinated per project. State the required mill certificate or material record, grade standard and inspection scope in the RFQ so availability and documentation can be confirmed before quotation.
Does the stainless grade alone define corrosion performance?
No. Corrosion performance also depends on the exact alloy, environment, temperature, cleaning process, surface finish, part design and service conditions. The buyer should specify and validate the grade for the final application.
Have a stainless steel part?
Send the drawing, exact grade, quantity, finish and critical interfaces for a practical manufacturing review.