7 Ply Heavy Duty Corrugated Boxes
Engineered for Massive Compression Loads, Machinery & Bulk Cargo
For industrial equipment, casting dies, bulk resins, and heavy automotive engines, standard cartons buckle instantly. TopWay's heavy-duty corrugated containers combine up to three fluted mediums (7-ply triple-wall) with 300+ GSM heavyweight kraft liners. This provides compressive stacking performance equivalent to wooden crates at a fraction of the tare weight.
Why Buyers Choose Our 7 Ply Heavy Duty Boxes
Engineered from high-BF virgin kraft liners at our Sitapura plant to replace wooden crates, carrying heavy loads up to 150 kg.
Extreme Compressive Stacking
Withstands multi-ton static pallet loads in unconditioned high-bay warehouses without sidewall bulging.
Freight & Air Cargo Savings
Lightweight paper construction eliminates wooden crate tare weight penalties on international air cargo.
ISPM-15 Exemption
100% paper construction requires zero heat treatment or fumigation certificates for worldwide customs clearance.
7 Ply Heavy Duty Box Specifications
Every order is customizable to your exact mechanical loading and dimensional footprint requirements.
| Specification Parameter | Technical Range / Capability |
|---|---|
| Wall Construction | 5-Ply Double Wall (BC) or 7-Ply Triple Wall (AAC / BCA) |
| Overall Thickness | 6.5 mm (5-ply) up to 14.5 mm (7-ply triple wall) |
| Edge Crush Strength | 55 ECT up to 110 ECT |
| Bursting Strength | > 24 kg/cm² (Mullen burst rating) |
| Fastening Method | Heavy-gauge galvanized steel clinching staples |
| Payload Rating | Engineered for 50 kg to 500+ kg dynamic cargo payloads |
Where 7 Ply Heavy Duty Boxes Are Used
Require Engineering Samples for Testing?
We engineer custom prototypes calibrated to your machinery dimensions and provide ECT, BCT and bursting test certificates.