Here’s a concise English summary of the quality inspection key points for pine wood and MDF Primed moldings exported to the United States:
1. Material Quality
Pine Wood Moldings
- Moisture content: 8–12% (U.S. standards) to prevent warping/cracking.
- Defects: No decay, insect holes, dead knots, or major cracks; live knots ≤1/3 board width (per contract).
- Appearance: Consistent grain/color within batches; smooth surfaces without burrs.
MDF Core
- Density: ≥650 kg/m³ (ASTM D1037), no delamination or loose edges.
- Formaldehyde: CARB Phase 2/EPA TSCA Title VI compliant (≤0.05–0.11 ppm).
- Surface: Flat, no bubbles/dents, sealed edges.
2. Coating Quality
- Adhesion: ≥4B rating via ASTM D3359 cross-cut test.
- Coating uniformity: No drips, bubbles, or pinholes; gloss meets specifications.
- Durability: Pass 72-hour salt spray (ASTM B117) or humidity cycling tests.
- Safety: VOC limits (EPA 40 CFR Part 63); heavy metals compliant with CPSIA/Prop 65.
3. Dimensions & Tolerances
- Accuracy: Length ±1.5mm, width/thickness ±0.5mm (ANSI/AWI standards).
- Straightness: ≤1/500 curvature (e.g., ≤4mm over 2m).
- Batch consistency: Uniform size, color, and texture.
4. Packaging & Labeling
- Moisture-proof: Wrap with PE film/anti-fog paper; mark “Keep Dry.”
- Reinforcement: Edge protectors for MDF to prevent damage.
- Labels: Product name, size, batch number, CARB/EPA/FSC certifications, IPPC mark (for pine).
5. Certifications & Documentation
- Mandatory: CARB/EPA, ASTM test reports, IPPC phytosanitary certificate (pine).
- Optional: FSC certification (if claimed), UL fire resistance (if required).
- Documents: Third-party test reports (e.g., SGS), commercial invoice with HS code (e.g., 4409.29.50xx).
6. Special Considerations
- Pest control: ISPM 15 heat treatment for pine.
- MDF swelling: Thickness expansion ≤8% (ASTM D1037) for high-humidity areas.
- Custom specs: Color matching or client-specific testing.
Recommend pre-shipment inspections and confirm requirements with U.S. importers to ensure compliance. Let me know if you need further details! 😊
