Quality Control Report for Wooden Computer Desks
Origin: China | Destination: Dubai, UAE
1. Raw Materials and Quality Specifications
Wooden computer desks are manufactured using a combination of natural and engineered materials to ensure durability, functionality, and compliance with Dubai’s import regulations.
A. Wood Components
- Solid Wood:
- Types: Pine, rubberwood, or oak for structural frames and legs.
- Quality Requirements:
- Moisture Content: 8–10% (measured with pin-type moisture meters).
- Defect Limits: No cracks, insect holes, or knots exceeding 3 mm in diameter.
- Engineered Wood:
- Types: Medium-density fiberboard (MDF) or plywood for tabletops and shelves.
- Quality Requirements:
- Density: MDF ≥ 720 kg/m³ (EN 622-1 standard).
- Formaldehyde Emissions: ≤0.05 ppm (CARB Phase 2 or EN 717-1 compliant).
B. Surface Coatings and Finishes
- Common Treatments:
- UV-Cured Coatings: 2–3 layers for scratch and heat resistance.
- Veneers: Oak or walnut veneers (0.5–1.2 mm thickness) bonded with E0-grade adhesives.
- Laminates: High-pressure melamine surfaces for moisture resistance.
- Quality Requirements:
- Adhesion Strength: ≥3.0 MPa (ASTM D3359 cross-cut test).
- Heat Resistance: No blistering after 24 hours at 60°C (ISO 4211).
C. Metal Hardware
- Types: Powder-coated steel brackets, aluminum drawer slides, and zinc-alloy screws.
- Quality Requirements:
- Load Capacity: Desk legs withstand ≥100 kg static load (EN 16121).
- Corrosion Resistance: Pass 72-hour salt spray test (ASTM B117).
2. Production Process and Critical Control Points
A. Material Preparation
- Wood Conditioning: Kiln-dried to 8–10% moisture content; stored in humidity-controlled environments.
- Panel Cutting: CNC machines cut tabletops and shelves with ±0.3 mm dimensional accuracy.
B. Assembly Process
- Frame Construction: Dowel and cam-lock joints for modular assembly.
- Adhesive Bonding: PVA or polyurethane adhesives applied uniformly; excess glue removed to prevent surface stains.
- Hardware Installation: Drawer slides and cable management slots aligned using laser-guided tools.
C. Surface Finishing
- Sanding: Automated belt sanders (180–240 grit) achieve smooth, splinter-free surfaces.
- Coating Application: Spray guns apply primer and topcoat; UV curing ensures rapid hardening.
- Edge Banding: PVC or ABS edging applied to prevent chipping and moisture ingress.
3. Quality Inspection Standards and Methods
A. Structural and Functional Tests
- Stability Test: Desk subjected to 50 kg lateral force; maximum tilt angle ≤1.5° (BS EN 14749).
- Drawer Slide Test: 15,000 open-close cycles; no jamming or misalignment.
- Surface Load Test: 25 kg weight placed on tabletop for 24 hours; deflection ≤2 mm.
B. Aesthetic Inspection
- Visual Inspection: Examined under 600-lux LED light for scratches, color mismatch, or coating bubbles.
- Edge Smoothness: Rounded edges (radius ≥1.5 mm) to meet Dubai’s safety standards.
C. Safety and Compliance
- Formaldehyde Testing: Per ISO 12460-3; emissions ≤0.05 ppm.
- Fire Resistance: Surface materials meet Class B fire rating (BS 476-6).
4. Common Defects and Acceptance Criteria
A. Aesthetic Defects
- Minor Issues: Slight grain variation or minor coating unevenness (≤5% of units per batch).
- Rejectable Defects: Cracks, exposed edges, or visible glue residues (≤1.2% rejection rate).
B. Functional Defects
- Structural Weakness: Joint separation under load testing (≤0.5% rejection).
- Hardware Failure: Loose screws or stuck drawers (≤1% tolerance).
C. Overall Yield: 97.5% of production meets export standards after re-inspection.
5. Packaging and Containerization Guidelines
A. Packaging Specifications
- Inner Packaging:
- Anti-scratch foam sleeves and corner guards for tabletops.
- Silica gel desiccants (8g/m³) to mitigate humidity during transit.
- Outer Cartons: Triple-wall corrugated boxes with reinforced edges; labeled with handling symbols (e.g., “This Side Up”).
- Documentation: Includes assembly manuals, FSC certification, and compliance stickers.
B. Container Loading Protocol
- Pallet Configuration: Euro pallets (1200×800 mm) stacked ≤1.2 m high; weight ≤1,000 kg per pallet.
- Weight Distribution: Max 20 tons per 40HQ container to avoid floor damage.
- Securement: Nylon straps and edge protectors to prevent shifting; anti-slip mats between layers.
- Climate Control: Use ventilated containers; avoid exposure to direct sunlight during storage.
C. Critical Precautions
- Pest Control: Wood materials must comply with ISPM 15 (heat-treated with stamped mark).
- Customs Compliance: Include UAE Conformity Assessment (ECAS) certificates.
- Pre-Shipment Audit: Third-party inspection (e.g., TÜV or Bureau Veritas) for 10% of randomly selected units.
This report ensures that wooden computer desks manufactured in China adhere to Dubai’s stringent quality, safety, and environmental requirements. By prioritizing material integrity, precision engineering, and rigorous defect control, the products are optimized for durability and functionality in Dubai’s high-temperature climate.
