Tri Wall Cardboard Sheets
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Industrial protection in every layer
Tri Wall Cardboard Sheets - Replace Wooden Crates with Sustainable Paperboard
Engineered with an ECT-90 rating and AAA flute construction, our triple wall corrugated sheets deliver maximum stacking strength, puncture resistance, and forklift protection for heavy machinery, automotive parts, and industrial freight shipments. Available in custom sizes to fit your pallet dimensions exactly. Reduce shipping weight and eliminate wood quarantine concerns with our heavy duty triple wall corrugated sheets. Offering comparable strength to plywood crates at a fraction of the weight, these 100% recyclable boards are ideal for industrial parts, heavy machinery, and overseas container shipping. Custom die-cutting and lamination available.
Heavy duty cardboard sheets — rated for the stack, built for the shipment.
Top 5 applications of heavy duty cardboard sheets
1. Pallet layer pads 2. Bottom / top sheets 3. Heavy duty boxes and octabin 4.Timber-crate replacement 5. Dividers and fitted inserts
Frequently Asked Questions About Tri Wall Cardboard Sheets
What flute combinations are used?
BAC AAC AAA CAC CAA ABC EBA
What strength ratings are typical?
ECT: about 67, 80, 90, or 112 kN/m
Mullen / burst: about 700, 900, 1,100, or 1,300 psi
US catalog pads are often sold as 1,100 lb test triple wall.
Paper grammage matters as much as flute. A light BAC can be weaker than a heavy AAC.
Can they replace wood?
For many dry indoor pads and some crates, yes: lower tare weight, recyclable, no heat-treat stamp. They are not waterproof. Do not use untreated kraft TW as outdoor decking or in wet containers without a coating or wrap.
Are they waterproof?
Standard kraft triple wall is not water-resistant. Strength drops fast above ~85% RH or after wetting. For damp lanes ask for wet-strength liners, higher Cobb treatment, curtain coat, or a plastic/film wrap.
What sizes are standard?
Common sheet sizes: 24×36, 36×48, 40×48, 48×48, 48×72, 48×96 in.
40×48 is the usual GMA pallet pad. Custom cut and scored sheets are normal.
Does flute direction matter?
Yes. Flutes running across the short span usually resist bending better on a pallet. Specify flute direction on custom sizes.
How should they be stored?
Flat, indoors, off the floor, covered, about 30–70% RH. Do not store against damp concrete or in open yards.
What should I put on a quote request?
- Triple wall / 7-layer
- Flute code (BAC, AAC, AAA, CAC, CAA, ABC, or EBA)
- Paper weights or target ECT / 1,100 lb test
- Size and flute direction
- Kraft or white liner, print if needed
- Quantity and pack (bundle/bale)
- Scores, slots, anti-slip, coating
- Delivery term and port
HS code used for export?
The HS code used for export is 4819100000.
What is the lead time after PO confirmation?
The lead time is 7 days after PO confirmation.
Sample policy?
Samples are free of charge. Freight is paid by the customer.
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