Safe Calcium Carbide Supply: A Guide to Palletizing and Container Loading

The number of drums in a container is only one part of planning a safe calcium carbide shipment. Someone has to unload those drums at the other end, with the equipment available at that warehouse. A few measurements before ordering can save a great deal of handling later.

At TYWH, we offer one, two or three tiers of pallets for our 100 kg drums. The three-tier option needs a closer look before booking: there is less room for pallet height, and the receiver's forks must still fit underneath the load.

195 Drums with Pallets, 225 Without

Our usual 20GP loading plan takes 195 drums on pallets, containing 19.5 tonnes of calcium carbide. Loading the drums without pallets brings the count to 225, or 22.5 tonnes. Neither net weight includes the steel drums or pallets; we check the shipment's gross weight against the carrier's requirements separately.

Those extra 30 drums give a buyer another three tonnes in the same container. Unloading takes more work, though. Without pallets, the receiving team has to handle drums individually, using suitable handling aids. With pallets and compatible equipment, they can move a group of drums together.

So the choice depends partly on what happens after delivery. How many people will unload the container? What equipment will they have? The extra cargo may be worthwhile, but it comes with a different unloading job.

What Do One, Two and Three Pallet Tiers Mean?

The tier count refers to the pallets positioned within the container. It does not tell you how many drum layers sit on each pallet. Drum numbers, grouping and unloading order belong in the loading plan for the particular shipment.

We use several pallet footprints: 860 × 860 mm and 800 × 1300 mm, plus the narrower 1300 × 430 mm and 860 × 430 mm sizes. These fit our drum layout and the available container space. They may look quite different from the pallets already in a customer's warehouse.

Can Local Pallet Sizes Help You Check Compatibility?

A European warehouse might normally handle 1200 × 800 mm pallets, while another uses the 1200 × 1000 mm format also found in the UK. In North America, the familiar 48 × 40 inch pallet measures roughly 1219 × 1016 mm. Japan and South Korea commonly use a 1100 mm square; Australia's familiar square pallet is larger, at 1165 mm. China, India and parts of Southeast Asia use several formats, including 1200 × 1000 mm.

These sizes describe local practice, not a guarantee that a truck can pick up our pallets. We need the fork measurements: thickness, width, length and spacing. We also need to know which side the driver will approach.

On a pallet with a 430 mm narrow side, the supports can restrict where the forks enter. There may be a usable approach from one side but not another.

The Height Problem with Three Tiers

Every additional pallet tier takes up some of the container's height. To make room for the drums in a three-tier load, we reduce the height of certain pallets. That is why we cannot quote one pallet thickness for all our loading arrangements.

If the change also lowers the fork openings, the receiver's forks may no longer fit. Even where they do fit, a tight gap can make unloading difficult. For this arrangement, fork-entry clearance is one of the first dimensions to agree with us.

There is another measurement to remember: the doorway. Hapag-Lloyd lists one 20GP example with 2395 mm of internal height but only 2292 mm at the door. The actual container may differ. A load can sit comfortably inside and still leave too little room to lift it and take it out through the opening.

Check the Pallet Loaded, Not Just Empty

An empty pallet does not show the whole picture. Check the smallest opening with the drums loaded and the pallets stacked as planned. Deflection under weight and manufacturing tolerances can reduce the space available. The forks need working clearance, rather than a gap they can just squeeze through.

A pallet truck needs a separate check. Its load wheels must pass through the underside, and its fully lowered fork height matters. For example, one Toyota manual pallet truck lowers to 85 mm. That figure is not the thickness of the fork blade. A pallet that suits a conventional forklift may still be awkward or unusable for that pallet truck.

Heavier Open-Head Drums Need Extra Care

Our special 100 kg open-head drums have heavier bodies. The calcium carbide content stays the same, but the pallet carries more gross weight. Combine those drums with the thinner pallet construction used in a three-tier arrangement, and pallet damage becomes a concern.

We need to check actual drum weight, drums per pallet, support positions and the load carried through the stack. The pallet must also hold up when lifted, not only while resting in the container. A standard-drum pallet arrangement should not be reused without checking these points.

If the pallet cannot provide enough strength and fork clearance within the available height, the plan needs changing. That may mean a different pallet structure, smaller groups of drums or fewer pallet tiers.

What to Send Us Before Ordering

Tell us the drum type and preferred pallet arrangement, along with the forklift or pallet truck model at the receiving warehouse. Please include fork thickness, width, length and spacing.

For three-tier loads and heavier open-head drums, we will need to agree on loaded fork-entry clearance, palletized gross weight, pallet strength and room to lift the goods out. Sorting this out before packing is much easier than finding another truck or breaking down a load when the container arrives.