Powder coated steel for appliances is the surface finish of choice for refrigerator side panels, washing-machine cabinets, microwave housings, water heater shells and range hoods. ChinaCNU Steel supplies epoxy-polyester hybrid and polyester powder coated steel sheet to white-goods OEMs across Asia, the Middle East and Africa, with film thickness, gloss and color matched to each appliance brand’s specification.
Why Appliance Manufacturers Choose Powder Coated Steel
- Smooth Finish: Electrostatic powder application produces a uniform 40–80 µm film with no brush marks or paint sag — critical for visible side panels.
- Detergent and Chemical Resistance: Polyester or hybrid powder withstands repeated cleaning with household detergents, ideal for kitchen and laundry appliances.
- Heat Resistance: Cured powder film survives 150°C continuous service, perfect for oven cavities, microwave outer panels and water heater shells.
- Color Stability: RAL 9016 traffic white and RAL 9003 signal white retain whiteness without yellowing under appliance lifetime usage.
- Cost Efficiency: Powder coated coil eliminates secondary painting at the appliance factory, cutting cycle time and rework on rejected paint defects.
Specifications for Appliance OEMs
| Parameter | Recommended Range |
|---|---|
| Substrate | Galvanized steel (Z80 – Z120) or Cold-rolled SPCC |
| Thickness | 0.4 – 0.8 mm |
| Width | 914 / 1000 / 1219 / 1250 mm |
| Powder System | Epoxy-Polyester Hybrid (most appliances) · Polyester (premium / heat exposure) |
| Film Thickness | 40 – 80 µm |
| Surface | Smooth glossy or smooth matte |
| Standard Colors | RAL 9016 traffic white, RAL 9003 signal white, RAL 9006 white aluminum, RAL 9005 jet black |
Common Appliance Applications
- Refrigerator side panels and door outers
- Washing machine top covers and front panels
- Microwave oven outer cabinet
- Range hood housings
- Water heater outer shells (electric and gas)
- Air conditioner outdoor unit cabinets
- Dishwasher front panels
- Small kitchen appliance bodies (rice cooker, bread maker, etc.)
FAQ
What powder is used for refrigerator side panels?
Most modern refrigerators use epoxy-polyester hybrid powder at 50–70 µm, white or stainless-look. The hybrid system gives smooth flow-out, good detergent resistance and the lowest cost. Premium brands switch to pure polyester for better mar resistance on visible side panels.
Can you supply powder coated steel that mimics stainless steel?
Yes. Brushed-stainless powder finishes are available in both regular and metallic effect, suitable for kitchen appliance fronts, range hoods and refrigerator doors. Pricing is roughly 20% above standard white but 60–70% below real SS304.
What is the typical thickness for water heater outer shells?
0.5–0.6 mm galvanized steel with 60–80 µm polyester powder is the industry standard. The polyester system handles the 80–100°C surface temperature without yellowing, while the powder thickness covers minor body weld marks.
Source Powder Coated Steel for Your Appliance Line
Tell us color, gauge and monthly volume — we’ll quote FOB Tianjin within 24 hours.