The detachable gooseneck semi trailer can use the lifting cylinder installed on the vehicle to support the front part of the semi trailer body on the ground. 
3 Axle 80 ton Detachable Gooseneck Semi Trailer for Sale

3 Axle 80 ton Detachable Gooseneck Semi Trailer for Sale

Dimension: 15800mm x 3000mm x 2500mm
Loading capacity(T): 50-150T
Axle: 3 axle
Tire: 12 units, 8.25R20/10.00R20/11.00R20/12R22.5
Suspension: Mechanical suspension or air suspension
Spring leaf: 120(W)mmx16(Thickness)mmx10 layers
Kingpin: JOST brand 2.0 or 3.5inch(bolted or welded type)
Tare weight: About 9.5-19T
Main beam: Height: 500mm; Width: 230mm; Side beam: 250 I-beam 10/8/10; Material: HG60 high-strength steel.
Bottom Platform: 5mm thick, checkered plate
Hydraulic cylinder: 12KW diesel engine with hydraulic station
Ramp: spring or hydraulic type
ABS: Optional
Valve: WABCO valve
Light: LED light (specially intended for oversea markets)
Voltage: 24V
Tool box: 1 set
Painting: Polyurethane paint, with long service lift, and avoid the vehicle get rust