The front part of the semi-trailer truck is the tractor, the trailer is located at the back, and the front part of the trailer is placed on the tractor. Compared with “monolithic” vehicles, semi-trailer trucks can improve the comprehensive economic benefits of road transportation, the transportation efficiency can be increased by 30-50%, the cost can be reduced by 30-40%, and the fuel consumption can be reduced by 20-30%. The semi-trailer mainly transports bulky and difficult-to-split bulk goods, as well as fresh and live goods, such as vegetables, meat, and fruits.
Common Standard Semi-Trailer Truck Box Size and Volume
| Dimensions | External (LxWxH) (Unit: m) | Inner (LxWxH) (Unit: m) | Theoretical Volume (Unit: m³) |
| 20 feet | 6.1×2.44×2.59 | 5.69×2.13×2.18 | 26.4 |
| 20 feet refrigerator box | 6.1×2.44×2.59 | 5.42×2.26×2.24 | 26 |
| 40 feet | 12.2×2.44×2.59 | 11.8×2.13×2.18 | 54 |
| 40 feet refrigerator box | 12.2×2.44×2.59 | 11.20×2.24×2.18 | 54 |
| 40 feet high box | 12.2×2.44×2.9 | 11.8×2.13×2.72 | 68 |
| 40 feet high refrigerator box | 12.2×2.44×2.9 | 11.62×2.29×2.50 | 67 |
| 45 feet | 13.7×2.44×2.9 | 13.58×2.34×2.71 | 86 |
| 45 feet refrigerator | 13.7×2.44×2.9 | 13.10×2.29×2.50 | 75 |
Box Trailer in TOPOLO
TOPOLO semi-trailers are mainly used in logistics systems supporting ships, ports, routes, highways, transfer stations, bridges, tunnels, and multimodal transport.
About Materials
At present, TOPOLO mainly produces box trailers for two applications: refrigerated trucks and dry freight trucks. According to different applications, the material selection of box trailers is also different. According to the type of trailer truck, it is divided into a fully enclosed box truck, wing truck, curtain side truck, etc. According to the material, it is divided into FRP foam core composite panel body, FRP honeycomb core composite panel body, aluminum composite panel body, all-aluminum body, etc.
TOPOLO, as a vehicle lightweight solution expert, provides different material solutions.
| Item | Body Material |
| Refrigerated Truck | XPS, PU foam sandwich Panels |
| Dry Freight Truck | PET/PVC foam sandwich Panels, PP/PC honeycomb sandwich panels, Aluminum sheets |
About Accessories
TOPOLO provides complete box trailer CKD solutions: doors, floors, chassis, locks, refrigeration systems, bumpers, lights, side skirts, etc.