A perfectly made pipe can still be rejected if it arrives rusted, dented or contaminated. Sea freight exposes steel to salt air, humidity, rough handling and long transit times. Good export packing protects the product, prevents claims and shows buyers you are a professional supplier. It also affects your price, so it must be planned from the quotation stage.
Why export packing matters
- Corrosion — condensation inside containers ("container rain") can rust carbon steel within days.
- Mechanical damage — dented bevels, bent pipes and damaged flange faces cause rejections.
- Contamination — stainless steel touched by carbon steel can rust on the surface.
- Customs and phytosanitary rules — untreated wood can be rejected at the port.
- Identification — buyers need to find heat numbers and sizes quickly on arrival.
Packing pipes
Bundling
- Small and medium pipes are usually packed in hexagonal bundles tied with steel or polyester straps.
- Use enough straps — typically at both ends and at intervals along the length.
- Keep bundle weights within the buyer's handling limits (often 2–5 tonnes); ask before production.
End protection
- Plastic end caps protect bevels and threads and keep dirt out.
- Threaded pipes need thread protectors.
Corrosion protection
- Carbon steel: black varnish, rust-preventive oil or specified coatings.
- Stainless steel: wrap in VCI paper or polythene; use stainless or nylon straps, or place protective strips between carbon steel straps and pipe.
Large-diameter pipes
Loaded individually with wooden saddles or chocks, and secured to prevent rolling.
Packing fittings and flanges
- Pack in wooden crates or boxes, with separators between layers.
- Protect flange faces with wooden, plastic or hardboard covers.
- Use VCI bags or rust-preventive coating for carbon steel.
- Pack by size and material, with a packing list inside each crate.
- Small items such as studs and nuts go in cartons placed inside crates.
Wooden packaging and ISPM 15
All solid wood packaging (crates, pallets, dunnage) used in international trade must comply with ISPM 15 — heat-treated or fumigated and stamped with the official mark. Non-compliant wood can lead to fines, treatment costs or rejection at the destination. Plywood and other processed wood are generally exempt but should be confirmed with your forwarder.
Marking
Each bundle or crate should show:
- Buyer's PO number and item number
- Product description, size, schedule/class and material
- Heat numbers
- Quantity, net and gross weight
- Bundle/crate number (e.g. 3 of 12)
- Destination and shipping marks
- Handling symbols where relevant
Marking should match the packing list and mill test certificates exactly.
Container loading
- Check the container is clean, dry and free of holes before loading.
- Distribute weight evenly — heavy steel concentrated in one area can damage the floor or be rejected by the shipping line.
- Use wooden dunnage under bundles and between layers.
- Lash and block cargo to stop movement. Loose steel in a container can puncture walls.
- Add desiccant bags to reduce condensation on long voyages.
- Long pipes may need open-top or flat-rack containers, or 40 ft containers.
- Respect payload limits — check with your forwarder for container and road weight limits.
Take photos of every stage: bundles, marking, container condition, loading and sealing. These are valuable evidence if there is a claim.
Packing costs in your price
Packing for steel can be a real cost per tonne — especially crates for fittings and VCI for stainless. Include it in your costing; see export pricing for steel products.
Packing for different destinations
- Gulf and Middle East — high humidity and heat inside containers; desiccants and good corrosion protection are important.
- Africa — long inland transport after discharge; strong bundling and crate construction help.
- Europe and North America — strict ISPM 15 and labelling rules; buyers often specify packing in detail.
- Long voyages — more condensation risk; consider extra VCI protection and moisture absorbers.
Ask the buyer about their unloading equipment — forklift capacity and crane access affect bundle weight and crate size.
Frequently asked questions
What is VCI packing?
VCI (volatile corrosion inhibitor) paper or film releases a protective vapour that slows corrosion on metal surfaces inside the wrap.
Do pipes need wooden packing?
Most pipes are shipped in strapped bundles without crates. Crates are common for fittings, flanges, stainless items and short lengths.
Why separate stainless and carbon steel?
Contact with carbon steel can leave iron particles on stainless surfaces, which then rust. Separate them and use suitable straps and spacers.
Who pays for packing?
It is usually included in your price. State the packing standard clearly in your quotation to avoid disputes.
Key takeaways
- Bundle, cap, protect and mark every item clearly.
- Use ISPM 15 compliant wood and VCI where needed.
- Load, lash and photograph containers carefully.
Professional packing, documents and inspection together build the reputation that brings repeat export orders.
