Surface finishing
Surface Finishing for Machined Parts
We manage the finishing, so your parts arrive protected, consistent and ready to assemble.
Finishes
Finishes we offer
| Finish | Materials | What it’s for |
|---|---|---|
| As-machined | All | Lowest cost; visible tool marks |
| Bead blasting | Aluminum, steel, stainless | Uniform matte look, hides tool marks |
| Clear / color anodizing (Type II) | Aluminum | Corrosion resistance and color: black, red, blue, gold and more |
| Hard anodizing (Type III) | Aluminum | Wear resistance for sliding and high-contact parts |
| Polishing | Stainless, aluminum, brass | Mirror or satin finish for appearance and cleaning |
| Passivation | Stainless steel | Better corrosion resistance; common for medical and food parts |
| Zinc / nickel plating | Steel | Corrosion protection at low cost |
| Black oxide | Steel | Mild protection, dark finish, minimal size change |
| Powder coating | Steel, aluminum | Durable colored coating for enclosures and frames |
| Laser marking / engraving | Most | Part numbers, logos and serial numbers |
Real finishes
Finished parts from our shop
We check surface roughness with a Mitutoyo SJ-210 when your drawing calls for it.
Tips
Choosing a finish
Plan for coating thickness
Anodizing adds a thin layer (Type III more). Tell us which features must stay in tolerance after finishing.
Mask threads and fits
Use masking for threads and bearing fits.
Match colors across batches
Send a reference sample or a RAL / Pantone code.
Not sure which finish to choose? Tell us how the part is used, and we will recommend one.
Get a quote
Have a part to make?
Send your drawing. An engineer will reply with a price, lead time and any design suggestions — usually within 24 hours.
- We review your drawing, usually the same day.
- You get a price, lead time and DFM notes.
- We machine a sample for new parts after your approval.
- Production, full inspection and shipping from Shanghai.
Prefer email? Send your files to sales@shcncparts.com