Australia’s cold storage sector is being rebuilt in real time, and the loading equipment at the door has not kept up. Transaction volumes rose 156% year on year in the third quarter of 2025 to AUD 259.6 million, taking the rolling twelve-month total to AUD 480.2 million, with roughly 110,000 sqm of refrigerated space under construction nationally. Almost all of it is being added behind walls that already exist — the same four dock doors, the same apron, more pallets inside.
A private cold-chain 3PL brought us exactly that problem: two sites, chilled and frozen grocery, and no practical way to add a fifth and sixth bay without cutting into a sealed, live freezer envelope. This is how twelve 10-ton hydraulic mobile yard ramps replaced that plan, and what had to change in the specification to survive a sub-zero apron.
Project Snapshot
| Item | Detail |
|---|---|
| Customer | Private cold-chain 3PL, chilled and frozen grocery |
| Sites | Western Sydney, NSW and Dandenong South, VIC |
| Equipment | 10 t / 22,046 lb hydraulic mobile yard ramps, 11,000 × 2,100 mm (36’1″ × 6’11”) |
| Quantity | 12 units — 7 for New South Wales, 5 for Victoria |
| Working height range | 1,100–1,700 mm (3’7″–5’7″), matching trailer decks on site |
| Environment | −22 °C freezer despatch, +42 °C summer apron, daily washdown |
| Production lead time | 24 days from order to loading in Foshan |
| Sea freight | 18–22 days, FCL direct to Port of Melbourne and Port Botany |
Four Fixed Bays, Six Trailer Heights
Both facilities were designed around one trailer height — roughly 1,150 mm (3’9″) at the dock. Reality ran from 1,000 mm (3’3″) rigid reefers to 1,650 mm (5’5″) B-double decks, plus skeletal trailers hauling 40 ft containers that had to be destuffed at ground level whenever the freezer bays were full. Cycle times doubled whenever a high-deck vehicle took a low bay, and the freezer door stayed open longer on every trailer, which shows up on the refrigeration kWh meter.
Why We Did Not Pour a Second Dock
| Option | Indicative cost | Business interruption | Flexibility |
|---|---|---|---|
| 4 new insulated pit bays with levellers and doors | AUD 320,000–480,000 in civil works, doors and fit-out | 6–9 weeks of restricted freezer access; wet trades against a live envelope | Locked to one wall at one site |
| 12 × 10 t mobile yard ramps (this project) | USD 5,200–6,400 per unit EXW with the low-temperature and washdown specification | None — every unit works outside the building envelope | Any bay, any yard, movable between the two sites |
Indicative planning ranges on an EXW basis, not a quotation. A standard 10 t ramp sits at USD 4,200–5,800 FOB; the difference here is the cold-climate steel grade, the oil specification and the washdown finish.
Breaching a live freezer wall means temporary panels, condensation control, hygiene paperwork and weeks of restricted operation at the moment the store is fullest. A mobile yard ramp is delivered, checked and working on the apron the same day.
What Had to Change for Sub-Zero Operation
Hydraulic oil and the power pack
This is where most imported ramps fail in Australia. Standard ISO VG 46 mineral oil stiffens hard below about −10 °C: cycles slow, relief valves chatter, and rod seals take the strain on every cold start. These twelve ran low-temperature hydraulic oil — pour point below −45 °C, viscosity index above 160 — with low-temperature-rated seals. Heat is the other half of the problem: the same power pack sits on an apron that tops 42 °C in a western Sydney summer, so the reservoir went up a size and gained an oil cooler.
Steel grade and impact testing
Deck steel is where cold climates actually bite, and it is the point most buyers never ask about. Q235B carries a Charpy impact requirement of 27 J only at +20 °C; it has no guaranteed toughness at −20 °C. For ramps staged permanently in the cold we moved to Q355D, impact-tested at −20 °C, and Q355E at −40 °C where a blast freezer is involved. It adds cost, and it is the wrong place to save money.
Deck, fasteners and washdown
Daily washdown drives corrosion faster than the freezer does: chlorinated water runs off the deck and sits in the side rails and leg pivots. All twelve shipped with checkered anti-slip deck plate, a zinc-rich primer and two-pack polyurethane at roughly 120 µm dry film, and stainless fasteners on exposed hardware. Two units at the washdown bay still showed paint blistering along the deck edge plate at the first inspection, so both were recoated and moved to galvanized edge hardware.
Deployment: Three Duty Profiles, One Ramp Model
| Site | Units | Duty | Daily cycles | Notes |
|---|---|---|---|---|
| Western Sydney — chilled despatch | 4 | 1,000–1,300 mm rigid reefers and B-doubles | 90–110 | Galvanized edge hardware added after month one |
| Western Sydney — freezer despatch | 3 | −22 °C freezer trailers, high cycle | 70–90 | Staged on the apron; the ramp never enters the envelope |
| Dandenong South — ambient yard | 5 | 20 ft and 40 ft GP destuffing, tautliner loading | 60–80 | Ground-level container work with no dock involved |
Keeping one model across all three duties was deliberate: one spares box, one operator procedure, one maintenance interval — and when a freezer bay goes down, a ramp can be towed across the yard to cover it.
Container Plan and Commissioning
An 11,000 mm ramp does not fit a 40 ft high-cube casually, but it does fit. Internal length is 12,032 mm, leaving about a metre of working room. Each unit ships as a folded section with the power pack crated separately, two per high-cube at roughly 6.5–7.0 t gross. Twelve ramps left Foshan as six containers at 2,600–3,000 kg per unit, each load-tested at 125% of rated capacity with the test record in the CE and ISO folder.
Commissioning across two sites took two days with the operator’s own maintenance team, and three things had to be right first. Apron level: where the surface fell away at the drainage channel we used blocking plates rather than letting the support legs bridge air. Approach angle: both sites were line-marked for a square approach, because side entry is how ramps get walked off their leg pads. Trailer restraint: the duty sits in the Work Health and Safety Act 2011 (s.19) and Part 3.1 of the WHS Regulations, with AS 2359.2 applied to forklift movement.
Four months on, the operator reports roughly 3,200–4,000 cycles, no ramp-related incidents and no unplanned downtime, with average freezer door-open time down about 1.5 minutes per trailer.
Frequently Asked Questions
Can a mobile yard ramp be used inside a −22 °C freezer?
Do not do it. Steel and oil can be specified for that temperature, but moving a ramp through the doorway holds the freezer door open and breaches the envelope every time. Keep the ramp on the apron.
Do mobile yard ramps need impact-tested steel for cold climates?
If the ramp is staged permanently in the cold, yes. Q235B is only impact-tested at +20 °C; specify Q355D, Charpy-tested at −20 °C, or Q355E at −40 °C.
How many 10-ton mobile yard ramps fit in a 40 ft container?
Two folded 11,000 mm units with power packs crated separately — about 6.5–7.0 t gross. A 20 ft GP takes one, laid flat.
What is the realistic lead time from order to an Australian port?
Allow 20–25 days of production for a non-standard low-temperature specification, plus 18–22 days of sea freight to Melbourne or Sydney.
Send us your trailer deck heights, the number of loading points and your lowest ambient temperature, and we will come back with a ramp schedule and a drawing rather than a brochure. Contact our engineers, or review the ground-to-dock ramp range and the heavy-duty hydraulic mobile yard ramp.
