... sheet 2.5mm, side wall steel sheet 1.2mmRunning GearSuspensionTri-axle mechanical suspension with 11-pcs leaf springWheel HubsCast steel, 10 ... studsTires12.00R22.5, 13units (one spare tire)AxlesFUWA axle, load capacity 13ton eachBrakesDual lines pneumatic brake system, WABCO Emergency ... request We are manufacturer,promise you quality and price! China Tri-axle Wall-side semi-trailer