Painting Services
We provide professional spray painting services for custom parts, delivering durable and visually appealing surface finishes. Whether for functional protection or decorative purposes, our spray painting solutions enhance both the performance and aesthetics of your parts, tailored to your material and application requirements.
What is Spray Painting?
Spray painting is a surface finishing process that applies paint evenly onto a part using specialized spraying equipment. This technique creates a uniform, durable coating on metals, plastics, glass, and other materials, improving corrosion resistance, wear resistance, and visual appeal.
Why Choose Spray Painting
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Corrosion Protection – Prevents rust, oxidation, and surface wear.
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Aesthetic Enhancement – Provides a wide range of colors and gloss levels.
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Durable & Wear-Resistant – Strong adhesion extends part lifespan.
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Functional Marking – Can include scales, indicators, or special markings.
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Versatile Application – Suitable for flat, curved, or complex-shaped parts.
Spray Painting Performance Parameters
| Parameter | Range / Description |
|---|---|
| Coating Thickness | 10–50 μm |
| Surface Gloss | Matte, Semi-Gloss, High-Gloss |
| Color Options | Standard colors or custom shades |
| Corrosion Resistance | Hundreds of hours in salt spray test |
| Adhesion | ≥3B (ISO 2409 standard) |
| Wear resistance | High |
| Surface Roughness | Ra ≤ 0.5 μm |
Detail of Painted Parts
Materials Suitable for Spray Painting
| Material Category | Material Grade / Model | Pre-Painting Treatment | Surface Characteristics | Typical Applications |
|---|---|---|---|---|
| Carbon Steel | Q235, 45# (C45), 20# | Degreasing, Sandblasting, Phosphating | Smooth, easy to coat after pretreatment | Structural parts, machinery housing |
| Alloy Steel | 40Cr, 42CrMo | Degreasing, Sandblasting, Phosphating | Strong, wear-resistant | Mechanical components, shafts, gears |
| Stainless Steel | 304, 316 | Sandblasting or chemical etching | Corrosion-resistant, smooth | Kitchenware, decorative panels, electronic housing |
| Aluminum Alloy | 6061, 6063, 7075 | Anodizing or sandblasting | Lightweight, good corrosion resistance | Automotive parts, electronics enclosures |
| Magnesium Alloy | AZ31, AZ91 | Chemical conversion coating / Phosphating | Lightweight, corrosion-prone | Electronics, automotive components |
| Titanium Alloy | TC4 (Ti-6Al-4V) | Sandblasting or acid etching | Strong, corrosion-resistant | Decorative parts, aerospace, electronics |
| Plastic | ABS, PC, PA, PP | Priming / Surface roughening | Smooth, low surface energy | Electronics enclosures, household appliances |
| Composite Materials | FRP, Carbon Fiber Composites | Primer or epoxy sealing | Lightweight, smooth | Automotive panels, sports equipment, aerospace components |
- Before metal painting, surface cleaning, degreasing, sandblasting or chemical pre-treatment are usually required to ensure adhesion.
- For materials prone to corrosion (such as magnesium alloys and steel), it is recommended to apply anti-rust primer or phosphating treatment first.
- The surfaces of plastics and composite materials are relatively smooth, so primers or sealants are needed to enhance the adhesion of the paint.
Applications of Spray-Painted Parts
Spray painting is widely used across industries:
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Consumer Electronics – Phone cases, computer housings, headphone shells
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Industrial Equipment – Control panels, instrument dials, machinery enclosures
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Automotive Parts – Body trim, dashboard panels, interior components
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Home Appliances – Air conditioner panels, washing machine panels, kitchen appliances
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Medical Devices – Device housings, instrument handles
