Packing and shipping for export

Designing for transport

For an exported building, logistics begins at the design stage. Frame segments are split at bolted end-plate connections so that each piece fits the chosen transport mode; purlin and sheeting lengths are planned against container length; and the number of packages is balanced against crane capacity and laydown space at site. A rafter split into pieces of up to about 11.8 m fits in a standard 40-foot container, while longer pieces need flat racks, open-top containers or break-bulk shipment.

Diagram of PEB members stacked in a 40-foot container and on a flat rack with lashing — Export packing in containers and flat racks.

Transport options

Typical export transport options for PEB (internal dimensions indicative)
Mode	Indicative usable length	Best for	Considerations
40 ft high-cube container	~12.0 m	Most PEB kits: frames, purlins, sheeting, accessories	Weight limit often governs before volume for heavy frames
20 ft container	~5.9 m	Bolts, fasteners, accessories, short items	Dense, heavy cargo
40 ft flat rack / open top	~12 m, overwidth or overheight possible	Wide or heavy members, crane girders, crane-loaded cargo	Lashing and weather protection required; higher freight rate
Break-bulk	Not limited by box	Very long members, large projects to ports with general cargo service	Port handling risk, more packaging, longer port time

Container loading plans are prepared before stuffing to check weight distribution, maximum payload and the order of unloading at site. Ideally containers are packed by erection sequence so that the first bay can be erected from the first containers to arrive.

Marking and bundling

Piece marks stencilled or tagged on every primary member, matching the erection drawings.
Bundles of purlins, girts and sheets strapped by mark and length, with timber dunnage between layers and bundle tags listing contents.
Sheeting stacked on timber skids, protected against water ingress; strippable film where specified. Moisture trapped between coated sheets causes white rust or wet-storage staining, so bundles are kept dry and sloped.
Bolts and fasteners packed in labelled boxes or crates by type, grade and connection, with spare allowance.
Accessories – doors, skylights, ventilators, trims and sealants – crated to prevent damage.
Packing list cross-referenced to bundle, package and container numbers.

Timber dunnage, skids and crates for international shipment must comply with ISPM 15 (heat-treated and stamped) to avoid quarantine delays.

Protecting cladding, panels and sundries in transit

Coated sheet, insulated panels and sundries are more easily damaged in transit than heavy steel members. Most claims arise from moisture, abrasion and crushing rather than from handling accidents.

Typical transit risks and packing measures
Item	Main risk	Typical measure
Pre-painted and Zn-Al sheet	Wet-storage staining from condensation inside the container; scratching	Dry bundles wrapped in waterproof paper or film, desiccant in containers, timber skids, no steel strapping directly on the paint
Galvanized purlins	White rust in tightly nested wet bundles	Pack dry, spacers where long storage is expected, ventilated storage on arrival
Sandwich panels	Dents, edge damage, film degradation	Factory packs with foam spacers and edge protectors, limited stack heights, protective film removed soon after installation
Insulation rolls	Wetting and compression	Sealed plastic wrap; loaded last or in dedicated containers
Sealants, tapes and foam closures	Heat ageing, limited shelf life	Cartons away from container walls; stored in shade on site and used within shelf life
Doors, skylights, ventilators	Impact, UV damage of translucent sheet	Crates, opaque wrapping for translucent sheet, clear labelling

Long sea voyages through tropical regions produce large temperature swings and condensation ("container rain"). Desiccant bags or strips and moisture-absorbing liners are inexpensive compared with the cost of replacing stained roof sheets.

Documents and trade compliance

A typical export shipment is accompanied by a commercial invoice, packing list, bill of lading, certificate of origin (preferential where a free trade agreement applies), mill certificates and the quality dossier. Structural steel buildings and parts are generally classified under HS heading 7308 (structures and parts of structures) or, for complete prefabricated buildings, 9406 – the correct code depends on the scope and the destination's tariff rules and must be confirmed per shipment. Destination-specific measures such as US Section 232 duties or anti-dumping rules affect landed cost and are reviewed during tendering; see export packing and logistics.

On arrival at site

Containers should be unloaded with suitable equipment, and members stored on timber off the ground, with cladding bundles inclined so that water drains. The site team checks package counts against the packing list and reports shortages or transit damage promptly. Correct storage protects the coating and makes the erection sequence run smoothly. World Steel ships from Vietnam to more than 30 countries under its export supply service, with loading plans and packing lists provided for every container.

المعايير حسب المنطقة

المنطقة	الرمز	النطاق
United States	MBMA Metal Building Systems Manual	Common industry practices – shipping, receiving and storage of materials
Australia / NZ	AS/NZS 5131:2016	Transport, storage and handling of fabricated steelwork
Europe	EN 1090-2	Handling, storage and transportation of components
International	ISPM 15 / Incoterms 2020	Wood packaging for international trade; delivery terms

الأسئلة المتكررة

How many containers does a PEB need?

It depends on tonnage, cladding area and member lengths. Heavy frames reach the payload limit first, while cladding and insulation fill volume first; the fabricator prepares a loading plan for each project.

Can very long rafters be shipped in containers?

Rafters are normally split at bolted splices so that each piece fits a 40-foot container. Where splitting is not desirable, flat racks or break-bulk shipment are used.

How should cladding be stored on site?

Off the ground, under cover or tarpaulins with ventilation, and with bundles sloped so water runs off. Wet bundles should be opened and dried to prevent staining of the coating.