TONGYA can supply you customized 20ft container semi trailer design solution to meet your different transport demand.
1. High tensile strength steel Q345 for I-beam
2. Axle: German or American style from 12 tons to 20 tons
3. Suspension: Mechanical suspension, air suspension  
4. Tyre: 10.00R20, 10R22.5, 11.00R20, 11R22.5, 12.00R20 or 12R22.5 (Other size is optional)
5. King pin: Optional for90# or 50# Kingpin
6. Landing gear: "Jost" landing gear or other brand .