SERVICES
Cheng Lian provides custom die casting services from tooling design, aluminum casting, CNC machining to surface treatment
Surface Finishing
Functional and Aesthetic Surface Finishing for Metal Components
We provide a variety of in-house and outsourced surface finishing processes tailored to customer requirements in appearance, corrosion resistance, and coating performance.
Capabilities
Sandblasting / Shot blasting
Deburring / Tumbling
Powder coating
Chromate / Trivalent passivation
Custom color matching & logo printing
Process Flow
01
FINE POLISHING
Quality requirements
● Surface must be smooth and uniform
● No visible scratches, swirl marks, or burn marks
● Edges polished consistently without rounding critical dimensions
● Gloss level must meet customer specification
● No black spots, contamination, or residue left on the surface
● Dimensional tolerance maintained after polishing
02
SHOT BLASTING
● Controlled abrasive size(#120-#240 mesh)
● Even surface profile with no over-blasting
● Zero retained abrasive or dust on part surface
● Enhanced mechanical adhesion for coatings
● Dimensional integrity fully maintained
● Consistent matte roughness (Ra 2,0-3,2 um typical)
03
POWDER COATING
● Aluminum-alloy small parts
● Thickness
● Uniform coverage
● No bare spots
04
ELECTRO-PLATING
● Aluminum-alloy parts
● Coating thickness
● Surface quality
Tooling Equipment
FAQ
Do you provide RoHS or REACH-compliant finishes?
Can I choose between gloss, matte or textured finishes?
Case Study Example
Email：sales@cldiecasting.com
Phone: +86-18676278416 / +86-13726318587
Add: Tongji Road, Shenghui North Industrial Zone, Nantou Town, Zhongshan City, China.
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