Painting Service
Spray painting and protective coating support for OEM metal parts that require controlled color, appearance, corrosion protection and packaging protection.
Sample or RAL matching.
Appearance standard review.
Adhesion and packaging checks.
Engineering Recommendation
Choose painting when appearance, color flexibility and project-specific finish control matter.
Painting is often selected when buyers need a specific color, visible surface appearance, repair flexibility or a finish that matches an approved sample.
Before quotation, NBFEIYU reviews the base material, pretreatment requirement, visible surfaces, coating performance, packaging protection and whether powder coating or another surface treatment would be more suitable.
Finish Decision Guide
When should buyers choose painting?
Surface treatment is selected by application environment, appearance standard, corrosion risk, coating durability, assembly requirements and target cost.
| Finish Route | Choose When | Do Not Choose When | Common Parts |
|---|---|---|---|
| Painting | Project-specific color, appearance and coating control are needed. | High-durability thick coating or high-volume line efficiency is the main goal. | Covers, housings, visible brackets, equipment panels. |
| Powder Coating | Durable thick coating and batch production efficiency are needed. | Very thin coating, local repair or special wet-paint appearance is required. | Frames, enclosures, outdoor brackets, cabinets. |
| Anodizing | Aluminum corrosion resistance and metallic appearance are required. | Steel parts or opaque painted color is required. | Aluminum machined parts, profiles, covers. |
| Electroplating | Conductivity, wear support or metallic decorative finish is needed. | Opaque color coating is required. | Hardware, fittings, electrical parts. |
Buyer Control Points
Painting quality starts before spray application.
Buyers should confirm approved sample, color tolerance, visible surface grade, coating area, masking areas and packaging standard before production.
Inspection Evidence
Appearance, adhesion, thickness and packaging checks before shipment.
Design & RFQ Guidelines
What should buyers confirm before quotation?
Finish quality depends on material, pretreatment, color standard, visible surface grade, coating thickness, masking areas, packaging and expected service environment.
Color Standard
Provide RAL, Pantone, approved sample or customer color chip when possible.
Visible Surface
Mark A-surface, B-surface and non-visible surfaces on the drawing.
Masking Areas
Define threads, holes, grounding areas and assembly faces that must stay unpainted.
Application Environment
Share indoor, outdoor, marine, chemical or abrasion exposure requirements.
Packaging
Specify scratch protection, separators, bags, cartons or pallet packing.
Inspection
Confirm color, gloss, adhesion, thickness or salt spray requirements before production.
Quality Control
Painting quality control before shipment.
Painting inspection focuses on visual appearance, color consistency, coating coverage, adhesion, surface defects and packaging protection.
Visual appearance inspection
Checked according to approved sample, drawing requirements and shipment standard.
Color consistency check
Checked according to approved sample, drawing requirements and shipment standard.
Coating thickness measurement
Checked according to approved sample, drawing requirements and shipment standard.
Adhesion test when required
Checked according to approved sample, drawing requirements and shipment standard.
Salt spray test when required
Checked according to approved sample, drawing requirements and shipment standard.
Packaging inspection before shipment
Checked according to approved sample, drawing requirements and shipment standard.
FAQ
Painting Service FAQ for OEM buyers.
When should I choose painting instead of powder coating?
Choose painting when color flexibility, visible appearance, thin coating control or local touch-up requirements are more important than thick powder coating durability.
Can NBFEIYU match a customer color sample?
Yes. Customers can provide RAL, Pantone, color chip or approved sample for review before production.
What information should I send for painting quotation?
Send drawing, material, quantity, color standard, visible surface requirements, masking areas, application environment and packaging requirements.
Can painted parts be used outdoors?
Yes, depending on pretreatment, coating system and corrosion requirements. Outdoor projects should specify exposure environment and testing expectations.
How do you inspect painted parts?
We check appearance, color consistency, coating coverage, adhesion when required, surface defects and packaging protection before shipment.
Can threads and holes be masked before painting?
Yes. Masking areas should be clearly marked on the drawing or inspection standard.
Can painting be combined with CNC machining or welding?
Yes. Painting is commonly applied after cutting, machining, bending, welding, deburring and cleaning.
Can you provide inspection reports?
Inspection reports can be provided according to project requirements, including appearance, dimensional or coating-related checks.
Engineering Review CTA
Send your finish requirements for engineering review.
NBFEIYU reviews material, appearance standard, application environment, finish route, inspection requirements and packaging before quotation.