Hauling slag is not the same job as hauling aggregate, and the specification choices that suit one can be wrong for the other. This Auman GTL-E 8×4 is an 80,000 kg GCW dumper built around a Cummins ISG 400 — 400 PS and 2,100 N·m at 1,000 rpm — driving a Sinotruk 12-speed and 5.26 axles, with a 6,800 mm Q345 bucket on HYVA lifting gear. It is offered in rectangular or U-shaped form, and that choice matters more for slag than for ordinary rock. Two other things need answering before you buy: whether a truck with no declared emission level can be registered where you operate, and which axle and tyre options suit your split of site and road work. Start from the Auman GTL-E 8x4 dumper specification and read it alongside this.

Rectangular or U-shaped bucket for slag?

Both shapes are offered at 6,800×2,300×1,500 mm in Q345 plate, with an 8 mm floor and 6 mm sides, lifted by a HYVA cylinder. For slag, the U-shape is usually preferred: it has no corners for material to pack into, it tips cleaner, and it keeps tare weight down — which means more of your 80,000 kg allowance goes into payload rather than into steel. The rectangular body carries marginally more volume for the same length and is easier to repair or line in a workshop, so it remains the sensible choice for ordinary aggregate.

The important caveat is on the sheet itself: it states no temperature rating for the body. If your slag is loaded hot, or at a temperature that would affect a Q345 body or the HYVA seals, say so before ordering rather than after. That is a question for the dealer with your actual loading conditions written down, not an assumption either of you should make. Get the answer in writing, because a body specification that fails in service is not a warranty conversation you want to have.

"For slag, pick the U-shape for cleaner tipping — but get the loading temperature in writing first, because the sheet gives no rating."

Powertrain: torque at 1,000 rpm doing the work

The engine is the Cummins ISG 400: 11,800 cc, 294 kW / 400 PS at 1,900 rpm and 2,100 N·m at 1,000 rpm. Peak torque arriving just above idle is what makes 80 tonnes manageable — it lets the truck break away smoothly under full load rather than relying on clutch slip, and it limits driveline wear on a truck this size. Peak power at 1,900 rpm confirms the engine is tuned for a low working band rather than for revs.

Drive goes through a Sinotruk HW23712 Iron (Q) 12-speed to 5.26 axles, with 9 T front and 16 T middle/rear ratings. The deep ratio is correct for site work and low-speed control; it is not the ratio for fast highway transfers. Twelve ratios give you enough spread to keep the engine where the torque is on a ramp. If your cycles are short and confined, this is the right setup; if you spend real distance on public road, discuss the alternatives before signing.

Which axle and tyre options to order

This 1,800+3,300+1,400 mm 8×4 lists middle and rear axle options Q4, Q2, Q6, SB8, SB9 and SBA, with tyre options UC, Z8 and NP, on top of the standard 13R22.5 18PR mixed and drive fitment and the 5.26 ratio. For slag yards and plant roads with short loaded cycles, the deeper axle ratio and a cut-resistant tread are the safer choice; for longer highway transfers to a tip, a road pattern handles heat build-up and wear better. Give the dealer the split between site and road work and make them specify accordingly.

Two practical points. First, slag and sharp industrial waste are hard on tyres, so the tread choice is not cosmetic — specify for your ground, not for the price list. Second, check local availability of 13R22.5 before delivery; this is a tubeless 22.5-inch size rather than the tube-type 12.00R20 found on smaller dumpers, and a size your market does not stock will strand the truck.

Braking is air brakes, front and rear drums, with ABS. Drums are right for industrial and off-road work — tolerant of grit, cheap to reline, repairable on site — but at 80 tonnes their weakness, which is heat, is amplified. Select the gear before the gradient and let the engine hold the truck. The sheet lists no engine brake or retarder, so ask whether one can be specified; on a truck this heavy, it is a safety item.

"Specify axles and treads from your site-to-road kilometre split. It is the biggest lever on cost per tonne after payload."

Cab and the working day

The cab is a flat-roof, left-hand drive unit seating two, with automatic air conditioning, MP3 + radio + USB (no radar), power windows, central locking, remote lock, five-in-one lock and a standard airbag seat. Automatic climate control is a genuine benefit where the truck works near a furnace or in high ambient heat, and the airbag seat is what keeps a driver effective through a long shift. Two seats and no bunk means single-shift operation; satellite positioning is optional, so specify it at order stage if dispatch needs telematics.

The 350 L aluminium tank is standard across this range and sized for a working day with one refuel, not for multi-day remote operation. At 80 tonnes, a loaded cycle consumes fuel quickly, so most operators refuel on site from a bowser rather than relying on tank capacity alone. Plan the bowser, not the tank. A desert air filter is listed as an option and is worth adding if your site is dusty, since it protects the turbocharger and helps keep service intervals long.

Registration, price and shipping

The ISG 400 here is listed as "No Emission", meaning no certified Euro level is declared for this configuration. That is common for units sold into mining and industrial service where the truck never goes through public road registration — but it becomes a problem the moment you need plates. Check with your import authority before ordering, and give the dealer your destination: if a certified emission rating is required on the same 80-tonne chassis, ask what can be supplied and what it does to price and delivery. Also confirm that 80,000 kg and these axle loads fall inside your local licensing class.

The listing shows $56,834 with an FOB Tianjin/Qingdao RoRo figure of ¥311,947. The FOB RoRo quote covers rolling the vehicle onto a vessel at a named Chinese port; ocean freight, insurance, destination charges and duties come on top. At up to 9,900 mm long and 3,580 mm tall, this is a significant freight item — confirm the port, check whether RoRo serves your discharge port, and get the shipping line's view before you fix a budget.

Questions buyers ask before signing

Rectangular or U-shaped bucket for slag hauling?

Both are offered at 6,800×2,300×1,500 mm in Q345 with an 8 mm floor and 6 mm sides, lifted by a HYVA cylinder. For slag the U-shape is usually preferred, because it has no corners for material to pack into, tips cleaner and keeps tare weight down. The rectangular body carries marginally more volume for the same length and is easier to repair or line, so it stays the choice for ordinary aggregate. The sheet states no temperature rating, so give your loading conditions before ordering.

Which axle and tyre options should I order?

This 8×4 lists middle and rear axle options Q4, Q2, Q6, SB8, SB9 and SBA, with tyre options UC, Z8 and NP, on top of the standard 13R22.5 18PR mixed and drive fitment and the 5.26 ratio. For slag yards and plant roads with short loaded cycles, the deeper ratio and a cut-resistant tread are safer; for longer highway transfers to a tip, a road pattern handles heat and wear better. Give the dealer your site-versus-road split.

Can a "No Emission" dumper be registered?

The ISG 400 here is listed as "No Emission", meaning no certified Euro level is declared. That is common for units sold into mining and industrial service where the truck never goes through public road registration, but it becomes a problem the moment you need plates. Check with your import authority before ordering, and tell the dealer your destination so they can confirm what certified rating can be supplied and its effect on price and delivery.

What should I confirm that the sheet does not state?

Whether an engine brake or retarder can be specified; the loading temperature the body and HYVA seals are rated for; local availability of the 13R22.5 size; and the warranty terms and service intervals for the ISG 400 and the Sinotruk gearbox.

Our read: this is a capable high-volume machine for plant and yard work where the truck never needs plates, and the U-shaped body is the right call for slag. The discipline it requires is about specification rather than driving: get the loading temperature confirmed in writing, choose axles and treads from your actual site-to-road split, and settle the emission question before you pay anything.

Do that, and get a landed figure for your discharge port. The Auman GTL-E 8x4 dumper page carries the full sheet and the option list.