Logistics
Packing bronze for sea freight: cartons, crates and ISPM-15
How heavy cast bronze should be packed for ocean transport: foam and carton, wooden crates, ISPM-15 treated timber, palletising and the weight limits that decide your container.
Bronze does not break easily, but it is heavy enough to destroy whatever it is packed against. Most damage claims in this trade are a packing decision, not an accident.
The three packing levels
- Foam and carton — bowls, vases, incense bowls, small figures. Individually foam-wrapped, corner-protected, cartoned with dividers so pieces cannot touch.
- Carton in crate — censers, mid-size statues, plaques. Cartoned as above, then braced inside a wooden crate.
- Crated with bracing — tall cranes, large statues, anything over about 25 kg. Blocked and braced so the piece cannot move within the crate, with lifting points marked.
Cranes on tortoises deserve special mention: the legs and neck are the failure points, and a crane packed like a vase will arrive bent. They travel crated, with foam collars.
ISPM-15 in one paragraph
Most markets — the United States, the EU, Australia, Canada among them — require solid wood packaging in international trade to be heat-treated or fumigated and stamped under ISPM-15. If your shipment uses wooden crates, the crates must carry the mark and your documents must agree. Tell your supplier at order stage, not at booking: a crate already built from untreated timber has to be remade.
Weight, and the container arithmetic
A 20 ft container has a payload limit well below its volume for goods this dense, and some road networks impose a lower limit still on the leg to your warehouse. Model it early:
- Get unit weight and packed weight per item from the supplier.
- Add the crate weight, which is not trivial: a well-made crate can add 15–25 % to the packed weight.
- Check your destination's road weight limit for a single container, which may bind before the sea leg does.
- Only then fix quantities.
Marking and the warehouse
Ask for carton marks that your intake staff can use without opening anything: item code, piece count, net and gross weight, and a set number where pieces belong together. If you need barcode labels to your own specification, supply the artwork and have them applied at the workshop — relabelling a pallet of bronze in your own warehouse is a bad afternoon.
Insurance and evidence
Insure at the value you would have to replace at, not the invoice value, and agree the evidence standard for claims with your supplier in advance: photographs of the piece as received, with the crate and its markings, within a stated number of days of delivery.