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Published · By Gardenstone Editorial Team · Educational article from the SWME TRADE team
There is no single price of sand per tonne, because the tonne is only the unit of sale — the price is set by the sieve cut you buy. One 20 ft container carries about 24–27 tonnes of loose sand, a narrow 0.3–1 mm grade costs more per tonne than a wide 0–2 mm run from the same deposit, and ocean freight is charged per container rather than per tonne, so the more saleable tonnes you load into the weight-limited box, the lower the freight per tonne. Those three facts — sieve cut, moisture, payload — explain most of the spread between two quotations that both say 'sand'.
Treat the per-tonne figure as the start of a conversation, not the end of one. The practical sequence for an importer or merchant is to fix the grain band for the job, put the moisture maximum and packing format in writing, ask for material, packing and freight as separate lines to your named port, and only then compare numbers. The minimum order quantity also belongs in that first exchange: sand normally starts at one 20 ft container, and how the supplier treats MOQ across grades changes the economics of a first order more than a small difference in the headline rate. The rest of this article works through each of those pieces.
Sand is bought by the millimetre. A wide natural run straight off the screen sells almost everything it produces, so it carries little reject cost. A narrow band — 0.3–1 mm for raked zen lines, or a tight 1–2 mm for uniform top dressing — forces the plant to run extra screening passes and to reject everything outside the band, and that reject has to be paid for by the tonnes that pass. This is why a 0.3–1 mm grade can cost noticeably more per tonne than a 0–2 mm grade drawn from the same deposit: you are not paying for different sand, you are paying for the yield of the cut.
Two further processing steps climb the same ladder. Washing removes dust and clay, which raises the price because it adds water handling, drying and another reject stream. Colour sorting — picking out iron-stained or dark grains so a decorative bed stays even in sunlight — is the third and steepest step, because the tolerance is visual and the reject rate rises fast. For a buyer, the consequence is simple: ask each supplier to state the grain band in millimetres with a sieve analysis, whether the grade is washed, and what colour method was used. A quotation against that definition is comparable; a quotation against the word 'sand' is a different product every time.
A sand quotation should decompose into three lines: material, packing and freight to your named port. On a dense, low-value mineral the freight line is often the largest swing, and it behaves differently from the other two: ocean freight is charged per container, so the freight cost per tonne is simply the container rate divided by the tonnes actually loaded. Anything that stops you loading tonnes therefore raises your freight per tonne — which is why moisture and packing are price questions, not just quality questions.
Moisture is the clearest example, because it costs you twice. Water in the sand is weight you pay for and product you never see, and on a weight-limited container it also displaces saleable tonnes: at a 6% moisture content, a 25-tonne load carries about 1.5 tonnes of water, so every box delivers measurably less sand for the same freight. Specify a moisture maximum on an oven-dry basis with a test report, and the same container rate buys more product. Packing works the other way — loose lined loading achieves the highest payload, jumbo bags trade a little payload for site handling, and retail bags on pallets cost the most payload but sell the fastest — so choose the format for the market, not by reflex.
The commercial floor for exported sand is one 20 ft container, about 24–27 tonnes loose, because sand is dense enough to reach the container's weight limit long before it fills the cube. This also answers a question buyers often ask: a 40 ft container is not the better deal for sand. Its payload is only marginally higher than a 20 ft because the same weight limits apply, and destination road rules frequently cap the axle load anyway — so the 20 ft box remains the standard economic unit, and MOQ is quoted in containers, not in cubic metres.
Within that floor, how the supplier counts MOQ matters more than the number. Ask for the minimum order quantity per grade, not per product line: a supplier who will split one container across two or three grades — say a 1–2 mm topdressing and a 2–4 mm coarse run — lets you meet the MOQ with a mixed first order, which is exactly what a first-time buyer needs to test several products against the market. Expect a small handling premium for the mixed load, and treat it as cheap insurance against committing 24–27 tonnes of one grade you have never sold. Bagged orders have their own MOQ, usually expressed in pallets, and jumbo-bag orders in units; either way, get the MOQ and the mixed-container policy in writing before the price is agreed.
Price breaks on sand concentrate in the packing and freight lines, not the material line, and knowing that changes how you negotiate. Above one container the supplier can run longer bagging campaigns without changeovers, schedule screening runs back to back, and book freight against steadier volumes, so quotes typically step down in tiers — around 1 container, then 3–5 containers, then 10 or more or an annual programme. The exact steps vary by supplier and season, so ask for the break table in writing rather than assuming a percentage, and note that the material line, which is anchored to the sieve cut and reject rate, moves least of all.
Two commercial details protect the break you negotiate. First, the validity window: sand prices move with fuel, freight rates and season — the Chinese New Year shutdown compresses both production and vessel space into the weeks either side — so a quotation valid 30–60 days is a different offer from one valid a week. Second, what the price excludes: destination THC, documentation, insurance and inland haulage reappear on the invoice if nobody writes them down. On annual programmes, agree a base price with a stated adjustment cap tied to published freight indices rather than open-ended renegotiation, so the discount survives the year.
Size the first order from sell-through, not from the discount. One container is roughly 1,200–1,350 × 20 kg bags for resale; a merchant moving 400 bags a month is holding about three months of stock per container, which is a sensible first position — enough to prove the grade, cover a season, and not so much that a tone drift or a slow line becomes dead capital. Split the container across two or three adjacent grain bands, keep the products labelled and separated in the load, and let the market tell you which band earns the second container.
Do not chase a deeper break into over-buying. Sand does not expire, but bags age, moisture creeps in through poor storage, and warehouse space is not free; a discount that ties up six months of cash in a grade that sells in four months is not a discount. Reorder lead time is the other half of the calculation — routine production and loading run about 1–2 weeks from confirmed order, rising to 3–5 weeks before the peak season and the New Year shutdown — so hold one container of forward cover through those windows and order the full project quantity from one production lot when colour consistency matters.
Write the order against numbers so every later disagreement becomes a measurement. A workable specification and MOQ clause covers seven items: the grade name with its grain band in millimetres and a stated sieve analysis; a moisture maximum on an oven-dry basis with a test report; a fines and dust limit; the packing format with unit-mass tolerance per bag or jumbo bag; the MOQ stated per grade together with the price-break table above it; a retained sealed reference sample from each production lot held by both parties; and loading photographs with lot references plus the right to a third-party pre-shipment inspection.
Two clauses earn their place on a first order specifically. A partial-shipment clause lets you take the container in agreed splits — useful when a mixed load is being tested against different markets at once. And a re-order matching clause commits the supplier to match future lots against the retained reference sample, which is what keeps container eight the same product as container one. With those in place, the MOQ stops being a barrier and becomes what it actually is: the smallest unit at which a defined, repeatable product can be shipped at a per-tonne price that survives the freight.
There is no single figure, because the sieve cut you buy sets the price: a narrow 0.3–1 mm grade costs more per tonne than a wide 0–2 mm run from the same deposit, washing and colour sorting climb the ladder further, and freight is charged per container. Plan with the structure: one 20 ft container holds about 24–27 tonnes, and the quotation should be split into material, packing and freight lines to your named port.
The commercial floor is one 20 ft container, about 24–27 tonnes loose, because sand reaches the container weight limit before it fills the volume. MOQ should be counted per grade, and many suppliers will split one container across two or three grades for a small handling premium, which lets a first-time buyer test several bands without over-committing. Bagged and jumbo-bag orders carry their own MOQ, usually in pallets or units, so get the policy in writing.
About 24–27 tonnes loose, or roughly 1,200–1,350 × 20 kg bags. The load is weight-limited long before it is volume-limited, which is also why a 40 ft container is not the better deal: its payload is only marginally higher under the same weight limits, and destination road rules often cap axle loads further. Moisture reduces the payload of saleable sand — at 6% moisture a 25-tonne load carries about 1.5 tonnes of water.
A narrow grain band forces extra screening passes and rejects everything outside the band, and the reject has to be paid for by the tonnes that pass, so the price buys the yield of the cut rather than different sand. Washing adds water handling and drying plus another reject stream, and colour sorting is the steepest step because the tolerance is visual and the reject rate rises fast. Always ask for the grain band in millimetres with a sieve analysis before comparing prices.
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