Basic Finishing
- Deburring — Manual, vibratory, thermal, CNC
- Cleaning — Ultrasonic, solvent, drying
- Basic Polishing — Surface preparation
- Sandblasting — Surface texturing
- Brushing — Directional finish
- Inspection — Coating thickness & adhesion check
Post-Machining
Surface Finishing
Anodizing, Plating, Coating, Heat Treatment and More
Comprehensive surface finishing through in-house processes and qualified treatment partners. From anodizing and plating to powder coating and heat treatment — ensuring parts meet functional, cosmetic and corrosion-resistance requirements.
20+Finish types available
Up to 1000hSalt spray resistance
HV 700Max surface hardness
25–80μmHard anodizing thickness
Operations Split
In-House vs. Coordinated Finishes
Basic finishing is completed in-house. Specialty treatments are managed through qualified partners under our quality system.
Specialty Treatments
- Anodizing — Clear, black, color, hard (HV 400–600)
- Plating — Zinc, nickel, chrome, gold, silver, tin
- Powder Coating — 60–120μm, salt spray 300–1000h
- QPQ / Melonite — HV 500–700, salt spray 200h+
- Heat Treatment — Quenching, carburizing, nitriding
- PVD / DLC — Specialty coatings
- Passivation — Stainless steel corrosion enhancement
- Electropolishing — Smooth, bright stainless surfaces
Marking & LOGO Methods
Available on finished surfaces for branding, identification and traceability.
- Laser Engraving
- CNC Engraving
- Silk Screen Printing
- Etching
- Pad Printing
Material Finishes
Finishes by Material Type
Different materials require different surface treatments. Here is what we provide for each material group.
Clear Anodizing Natural silver finish, corrosion protection
Black Anodizing Cosmetic black, wear-resistant
Color Anodizing Red, blue, gold, custom colors
Hard Anodizing HV 400–600, 25–80μm thickness
Sandblasting Uniform matte texture
Brushing Directional satin finish
Polishing Mirror finish available
Powder Coating 60–120μm, custom colors
Zinc Plating 5–25μm, salt spray 48–120h
Nickel Plating 3–15μm, salt spray 72–200h
Chrome Plating Hard chrome, decorative chrome
Black Oxide Salt spray 24–48h
Passivation Stainless steel, salt spray 48–96h
QPQ / Melonite HV 500–700, salt spray 200h+
Electropolishing Smooth, bright stainless surface
Mirror Polishing Reflective finish
Powder Coating Salt spray 300–1000h
Nickel Plating Corrosion and wear resistance
Tin Plating Solderability and corrosion protection
Silver Plating Electrical conductivity
Gold Plating High-end electrical contacts
Polishing Bright, mirror finish
Quenching Through hardening for carbon and alloy steels
Carburizing Surface hardening, tough core
Nitriding Surface hardening, minimal distortion
Performance Data
Corrosion Resistance & Hardness Reference
Key performance data for common surface treatments — actual results depend on material, thickness and specification.
| Finish | Thickness | Surface Hardness | Salt Spray | Typical Material |
|---|---|---|---|---|
| Clear/Black/Color Anodizing | 10–25μm | — | — | Aluminum |
| Hard Anodizing | 25–80μm | HV 400–600 | — | Aluminum |
| Zinc Plating | 5–25μm | — | 48–120h | Carbon Steel |
| Nickel Plating | 3–15μm | — | 72–200h | Steel, Brass, Copper |
| Black Oxide | — | — | 24–48h | Carbon Steel |
| Passivation | — | — | 48–96h | Stainless Steel |
| QPQ / Melonite | 10–20μm | HV 500–700 | 200h+ | Carbon/Alloy Steel |
| Powder Coating | 60–120μm | — | 300–1000h | Steel, Aluminum |
Salt spray hours and hardness values are typical ranges. Actual performance depends on material grade, thickness, process parameters and specification.
Frequently Asked Questions
Which surface finishes can you do in-house?
Deburring, cleaning, basic polishing, sandblasting, brushing and inspection are in-house. Anodizing, plating, coating, heat treatment and specialty finishes are managed through qualified treatment partners under our quality system.
What salt spray resistance can you achieve?
From 24 hours (black oxide) to 1000 hours (powder coating). QPQ/Melonite achieves 200+ hours with HV 500–700 surface hardness. Specific resistance depends on the finish, material and specification.
Can you provide hard anodizing for aluminum?
Yes. Hard anodizing achieves surface hardness HV 400–600 with thickness 25–80μm. Clear, black and color anodizing are also available.
Do you offer heat treatment?
Yes. Quenching, carburizing and nitriding are available through qualified heat treatment partners, coordinated under our quality system.
Can you provide coating thickness and salt spray test reports?
Yes. Coating thickness measurement and salt spray test reports can be provided per customer requirements.
NEXT STEP Need Surface Finishing for Your Parts?
Send us your drawing with surface finish specifications (finish type, thickness, color, salt spray hours). Our team will coordinate the full finishing chain.