20ft Used Flat-Rack Container

excl. VAT · incl. VAT: €3,628.31

Out of gauge cargo and why the 20ft used flat rack container exists

Almost every awkward freight job starts at a door. A standard box has a fixed opening, and a piece that is wider or taller than that opening will not go in, no matter how patient the crane operator is. A 20ft used flat rack container solves the problem by deleting the walls. What remains is a steel deck, two end walls and four corner castings, so the piece is loaded from above or from the side, and the outline of the cargo rather than the outline of the box becomes the limiting factor. In freight language a load like that is out of gauge, meaning it breaks the standard envelope in width, height or both, and it is quoted, stowed and secured under different rules as a result.

That single change in geometry is the entire product. Transformers, press frames, gantry sections, boat hulls, pipe bundles, tracked machines, granite blocks and precast concrete elements share one awkward property: they are dense, rigid and the wrong shape. A rack gives them a flat surface with certified lifting points at the four corners, so the piece travels through the same terminals, cranes, chassis and twist locks as ordinary containers even though it would never fit inside one. Everything else worth knowing follows from that: how the deck is built, how you tie a load down, and what to look at when the unit has already had a working life behind it.

Deck, frame and the figures behind the rack

The frame keeps the ISO 20ft footprint so it interfaces with standard handling equipment. The recorded figures for this unit are set out below. Ask for them to be repeated for the actual rack you are offered, because racks vary far more between builders and generations than dry boxes do.

Two of those numbers deserve a second look. A maximum gross weight of 45,000 kg against a net weight of 2,300 kg leaves 42,700 kg of payload by subtraction, and that ratio is the reason people buy racks for heavy pieces rather than merely bulky ones. For contrast, the recorded figures for a 20ft dry box are a maximum gross weight of 30,480 kg over a floor area of 13.84 m². The rack occupies the same slot on a vessel or a chassis, offers 14.49 m² of deck, and is rated far higher. The reason is the load path: cargo to deck, deck to cross members, cross members into heavy side rails and corner posts, and from there straight into the castings that the spreader and the twist locks actually grip. There is no roof and no side panel taking part, so the steel that remains is thicker.

The internal height of 223.30 cm is the height of the end walls, not the height of a roof. It tells you how much of your cargo has structure beside it and where the top edge of the wall sits relative to your piece, which matters when you plan lashing angles and when you decide whether a load can lean against the wall at all. The 32.00 m³ envelope is a nominal figure for the space bounded by deck and walls. A real load frequently stands proud of it, and that is entirely the point of the format.

Folding end walls and what they are actually for

On a collapsible rack the end walls fold down flat onto the deck. That has three consequences worth planning around.

• Empty movement and storage: folded racks nest together as a bundle, so the empty return leg and the yard footprint cost a fraction of what a fixed frame would cost.
• Overlength cargo: with a wall down, a beam or a pipe string longer than the 561.11 cm deck can overhang the end, which turns a length problem into a stowage and securing problem instead of a hard stop.
• Side and end access: a forklift can drive a load on from the end rather than waiting for crane time, which is often the difference between loading today and loading next week.

The hinge and locking arrangement is therefore the heart of the unit. The walls must fold without a hammer and must lock upright without slack. On a used rack, seized pins, bent gussets and a wall that no longer sits square are common findings, so this is the first thing to test in person or to have demonstrated in photographs rather than something to assume.

Lashing, load spreading and the point loads nobody plans for

Securing on a rack happens in the open, and the cargo itself has to behave as a stable structure once tied. A few habits separate a load that arrives in one piece from a claim.

• Lash to the lashing rings and to the frame, never to a deck board or to a handrail.
• Angle governs function: a near vertical chain clamps the piece down, a shallow one restrains it fore and aft, and most loads need both working together.
• Friction is a control, not an accident. A clean deck and rubber anti slip mats reduce how much the lashings have to do.
• Wheeled and tracked machines need chocks or welded stops, plus the parking brake and any transport locks the maker specifies.
• Timber dunnage or a steel spreader beam belongs under narrow feet, skids and small bearing plates.

Point loads are the most common oversight. A machine standing on four small feet concentrates its entire mass into four small areas, and a deck rating assumes the weight is spread rather than punched into one bay. Lay bearers so that heavy points sit over cross members rather than in the middle of a span, keep the centre of gravity low and near the middle in both axes, and remember that dunnage, cradles and securing gear all count towards the 45,000 kg gross figure along with the cargo itself.

Inspecting a used rack before money changes hands

A rack works harder than a box and shows it. Grade descriptions vary between sellers, so treat the written condition statement and the photographs as the real specification.

• Corner castings: look for cracks around the openings, deformation and weld repairs at the four lifting points.
• Cross members: bowing, deep pitting, corrosion through the web and previous repairs of unknown quality.
• Deck: soft or rotten timber, missing or sheared bolts, delamination, or on a steel deck, buckling and standing water traps.
• End walls: fold and lock them, then check hinge wear, pin corrosion and whether the wall stands square rather than leaning.
• Lashing rings: count them, check the welds, and reject elongated or torn eyes.
• Frame geometry: sight along both side rails. A twisted frame will fight twist locks and can be very expensive to correct.

Ask about the CSC safety approval plate as well. A CSC plate records that the unit was approved for international carriage and carries examination dates. If the rack will ship again it matters a great deal; if it will spend its life as a static platform in a yard it matters much less, and an out of date plate may simply be a fair reason for a lower price. Ask whether the unit is being sold as cargo worthy or as static use only, and get the answer in writing rather than by implication.

Handling, transport and life after shipping

Lifting is done from the corner castings with a spreader or with slings and shackles rated for the job. Forklift handling is possible only where the truck is genuinely rated for the combined weight and the forks reach far enough to be stable. Once a rack leaves the shipping cycle it makes a genuinely useful piece of yard equipment: a hardstanding platform for machinery, a base for a tank or a generator, a loading dock table, a temporary bridge plate over soft ground, or a stable stand for fabrication work outdoors. In those roles the deck rating is the asset, and the missing walls stop being a drawback.

Where a rack is the wrong tool

There is no weather protection, no security and no lockable space. Cargo travels exposed to rain, salt spray and anyone who walks past it, so anything sensitive needs shrink wrap, a cover or a crate built around it. If your load is over height but sits within the standard width and can be lowered in from above, an open top box is usually the closer fit because it keeps four walls and a lockable door. If the piece fits through a door at all, an ordinary dry box is cheaper to buy and cheaper to ship. The rack earns its keep specifically when weight or width, or both, rule the alternatives out.

What to confirm before ordering a 20ft used flat rack container

• Deck, external dimensions and gross rating stated for the individual unit rather than for the type.
• Whether the end walls fold, lock and stand square, ideally shown in photographs.
• Number and condition of lashing rings, and the deck material.
• Whether the CSC plate is in date and whether the unit is sold cargo worthy or static.
• Any repairs already carried out, and to what standard.
• How the unit will be lifted at your site and whether your ground can take the wheel loads of the delivery vehicle.

What is a 20ft used flat rack container normally used for?

It carries loads that will not pass through a container door: machines, transformers, boats, steel sections, pipe bundles and precast elements. The cargo is craned in from above or driven on from the end, then lashed to the frame. Because there are no side walls, width is limited by permits and stowage rather than by the box, which is why the format is standard for out of gauge freight.

How much weight can this rack carry?

The recorded maximum gross weight is 45,000 kg and the net weight is 2,300 kg, so the payload works out at 42,700 kg by subtraction. That figure covers cargo plus dunnage, cradles and securing gear together. Road, rail and vessel limits may still cap what you can actually move, so confirm the route limits before you plan a lift close to the maximum.

How big is the deck?

Internal deck dimensions are 561.11 cm long by 243.80 cm wide, giving 14.49 m2 of loading area, with the end walls standing 223.30 cm above the deck. External dimensions are 605.79 cm by 243.79 cm by 259.11 cm, so the unit keeps a standard 20ft footprint for handling. The nominal volume envelope between deck and walls is 32.00 m3.

Do the end walls really fold down?

On the collapsible type they do, and it matters for two reasons: folded racks bundle together for cheap empty repositioning and yard storage, and a dropped wall lets overlength cargo overhang the deck. On any used unit, test the hinges and locking pins rather than assuming, because seized pins and bent gussets are among the most common faults.

What should I check before buying a used rack?

Look hard at the four corner castings, the cross members, the deck surface, the lashing rings and the straightness of the side rails. Ask whether previous repairs were carried out to a recognised standard, whether the CSC safety approval plate is in date, and whether the unit is offered as cargo worthy or for static use only. Get the answers in writing.