Heavy Cargo Packaging Box

I. Definitions and Scope of Application
Fumigated wooden crates: Constructed from solid wood (such as pine, mixed hardwood, and hard mixed hardwood) and subjected to heat treatment or methyl bromide fumigation, they comply with the international phytosanitary standard ISPM 15 and are used for export packaging and the containment of heavy cargo.
II. Raw Material Requirements
Types of wood
Solid wood such as pine, hard mixed wood, and poplar
Free from decay, insect damage, blue stain, large live knots, and through cracks.
Moisture content
After fumigation/heat treatment: ≤20%
Component Specifications (Standard)
Panel thickness: 12 mm, 15 mm, 18 mm, 20 mm
Timber squares/frames: 30×50, 40×60, 50×70, 60×80, 80×80 mm, etc., selected according to load-bearing requirements.
Base timber: Commonly used for heavy-duty crates are 80×80 mm and 100×100 mm.
III. Fumigation/Heat Treatment Requirements
Must comply with the standard.
Internationally recognized: ISPM 15
Two processing methods
Heat Treatment (HT)
Kiln drying/heat treatment: core wood temperature ≥ 56°C for ≥ 30 minutes.
MB Methyl Bromide Fumigation
Apply pesticides in enclosed spaces in accordance with quarantine regulations.
IPPC mark (must be stamped)
The exterior of the enclosure must be clearly marked with an imprint:
Country code: CN
Enterprise Number: Heat Treatment / Fumigation Registration Number
Treatment method: HT (heat treatment) or MB (fumigation)
Materials available
Fumigation/Heat Treatment Certificate, Phytosanitary Certificate, and Customs Declaration Documents
IV. Structure and Manufacturing Specifications
Structural form
Fully enclosed solid wood box
Frame solid wood box
Base + Enclosure Panels + Box Lid Structure
Process Requirements
The enclosure is perfectly rectangular, with minimal diagonal deviation.
Even nail spacing, no protruding nails, no splitting.
Seamlessly joined with no excessive gaps.
Bottom structure
Standard forklift slots (two-way/four-way fork entry)
Heavy equipment can be fitted with lifting rings, lifting lugs, and steel strap reinforcement.
V. Load-Bearing Range
Lightweight: ≤500 kg
Standard: 500 kg to 2,000 kg
Heavy-duty: 2 to over 10 tons
(Reinforcement of the frame, encryption of the base, and addition of supports are required.)
VI. A Simple Comparison with Plywood (Fumigation-Free) Boxes
Fumigation solid wood crate
Advantages: extremely high strength, ultra-heavy-duty, and slightly lower price.
Disadvantages: Requires fumigation, prone to deformation and cracking, and has a long treatment cycle.
Fumigation-free plywood box
Advantages: fumigation-free, no deformation, fast delivery
Disadvantages: The heavy-load capacity is slightly lower than that of solid wood.