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Quality inspection key points for Primed pine wood and MDF moldings exported to the United States

Hereโ€™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: 8โ€“12% (U.S. standards) to prevent warping/cracking.
  • Defects: No decay, insect holes, dead knots, or major cracks; live knots โ‰ค1/3 board width (per contract).
  • Appearance: Consistent grain/color within batches; smooth surfaces without burrs.

MDF Core

  • Density: โ‰ฅ650 kg/mยณ (ASTM D1037), no delamination or loose edges.
  • Formaldehyde: CARB Phase 2/EPA TSCA Title VI compliant (โ‰ค0.05โ€“0.11 ppm).
  • Surface: Flat, no bubbles/dents, sealed edges.

2. Coating Quality

  • Adhesion: โ‰ฅ4B 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 ยฑ1.5mm, width/thickness ยฑ0.5mm (ANSI/AWI standards).
  • Straightness: โ‰ค1/500 curvature (e.g., โ‰ค4mm 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 โ‰ค8% (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! ๐Ÿ˜Š

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