A Fibre Drum is a multi-wall paperboard drum, typically 50 to 200 litres capacity, used for the transport of solid chemicals, powders, granules, and crystals. UN-coded 1G when packing-group certified, the standard format has steel chimes (rolled metal rims) at the top and bottom for stacking strength and a removable lid with a metal lock-ring closure. Fibre drums are the dominant low-cost packaging for non-corrosive solid cargoes that ship in parcel-size lots from China, citric acid, sodium bicarbonate, calcium chloride flake, urea, sodium carbonate, food-grade and pharmaceutical-grade crystalline solids.
Fibre drum construction
A standard 1G fibre drum has three layers of construction:
| Layer | Function | Material |
|---|---|---|
| Outer wrap | Stacking strength, weather resistance | Multi-ply kraft paperboard, often wax-treated |
| Body wall | Structural rigidity | 5-7 layers of wound paperboard, varnish-bonded |
| Inner liner | Moisture barrier; cargo contact surface | Polyethylene film, foil, or unlined paperboard |
| Top and bottom chimes | Stacking and handling | Rolled steel, sometimes with plastic insert |
| Lid closure | Cargo containment | Steel lock-ring with bolt-clamp; some lighter drums use clamp-rings |
The inner liner choice determines the cargo-compatibility envelope. Unlined fibre drums work for cargoes with no moisture sensitivity (most inorganic salts at low ambient humidity). PE-lined drums work for hygroscopic and food-grade cargoes. Foil-lined drums work for the highest-protection requirements (vitamin powders, some fine pharmaceutical chemicals).
Standard fibre drum dimensions
| Capacity | Height | Diameter | Empty mass | Typical fill |
|---|---|---|---|---|
| 25 L | ~400 mm | ~330 mm | ~2 kg | 25 kg net |
| 50 L | ~500 mm | ~400 mm | ~3 kg | 50 kg net |
| 100 L | ~700 mm | ~480 mm | ~4 kg | 100 kg net |
| 200 L | ~900 mm | ~580 mm | ~5-6 kg | 200 kg net (typical for solids at ~1 g/cm³) |
The standard for chemical sourcing is 50-100 kg fills for higher-value powders and 150-200 kg fills for commodity solids. Large fibre drums (>200 kg) are uncommon because handling becomes awkward, fibre drums are typically lifted by hand or with a clamp, not a forklift through pallet pockets.
When fibre drum is the right packaging
Fibre drum is the right choice for:
- Crystalline and granular solids that are not hygroscopic. Most inorganic salts at moderate humidity, urea prills, citric acid, sodium bicarbonate, magnesium sulphate.
- Food-grade and pharmaceutical-grade powders where the inner PE or foil liner provides the contact surface and the fibre body provides structural support.
- Light parcel-size shipments under ~5 MT where drums offer the right balance of unit cost and unit handling.
- Buyers who dispense cargo by the drum-load at the receiving site, open-top fibre drums dispense by tipping or by drum-discharge funnel.
Fibre drum is the wrong choice for:
- Liquid cargo of any kind. Even with a PE liner, the drum body has no integral seal against liquid pressure or seepage; a leak destroys the drum and contaminates the consignment.
- Hygroscopic cargoes in humid sea routes. Calcium chloride, magnesium chloride, lithium hydroxide will absorb moisture through any imperfection in the seal during a 4-6 week sea leg through humid latitudes.
- Cargoes that react with cellulose. Strong oxidisers like sodium chlorate or hypochlorites should not contact fibre packaging without a robust inner liner, the cellulose paperboard can ignite or degrade.
- High-density cargoes above ~250 kg fill where the fibre body cannot support the weight on stacking.
Container loading for fibre drums
| Container | 50-kg fibre drums | 100-kg fibre drums | 200-kg fibre drums |
|---|---|---|---|
| 20-foot ISO | 240-280 (palletised) | 160-180 | 80 |
| 40-foot ISO | 480-560 | 320-360 | 160-180 |
| 40-foot HC | 600-700 (with double-stack) | 400-420 | 180-200 |
Fibre drum density loading is dominated by the cargo weight; 200-kg fills hit the 22-MT cargo limit at 80 drums per 20-foot container.
The moisture-ingress failure mode
The most common fibre drum failure on long sea routes is moisture ingress through the lid seal. Three mechanisms:
- Lid lock-ring incompletely closed at the factory. The lock-ring needs hand-tightening to a specific torque; a factory worker who skips the second pass leaves a gap.
- Stacking pressure deforming the chime. A 200-kg drum at the bottom of an 8-drum stack carries 1.6 MT of compression on its top chime. Long voyages with vibration can deform the chime enough to compromise the seal.
- Container interior condensation. A 40-foot container holds 60-80 m³ of air. Daily temperature swings during a 4-week voyage produce condensation cycles inside the container; PE-lined fibre drums shed this fine, unlined drums can absorb it through the body wall.
For hygroscopic cargo, specifying the PE inner liner and the foil-lid seal in the purchase order is the small detail that catches this. The cost increment is USD 0.50 to USD 2.00 per drum.
Fibre drum disposal at destination
Fibre drums are not designed for reuse. After discharge they enter the buyer’s industrial waste stream, typically at USD 1-3 per drum disposal cost. Some operators bale and recycle the paperboard body separately from the steel chimes; this requires sorting infrastructure that not all destinations have.
Related terms
Drum is the parent reference covering all UN-coded drum types. HDPE drum is the plastic alternative for liquid cargoes. Lined drum is the steel-with-internal-coating alternative for corrosive liquids. IBC is the next size up (1,000 kg). Big bag is the alternative for bulk solids in the 500-2,000 kg range. IMDG Class 4.1 flammable solids and Class 9 miscellaneous DG often ship in 1G fibre drums.