Skeletal Semi Trailer has no bottom plate and can only be used for transporting containers. As the trend and demand for simpler and lighter weight design, Skeleton Semi Trailer is becoming the most common and popular in container semi -trailer widely used in most countries in the world. Current standard containers are available in standard sizes standard containers are available in standard sizes uniform ISO standard). Most of the Container Semi Trailers currently in use are standardized general purpose products, suchas 20, 40, 45, 48-oot fixed-length skeleton semi -trailers. According to the frame longi tudinal beam structure, Skeletal Semi Trailer can also be divided into go0seneck type, straight type, concave type. The frame of the fixed-length container semi-trailer is a space frame welded structure, owhich is formed by welding two I-shaped longitudinal beams and a plurality of beams (C-shaped channel steel). The front part of the front frame is connected with the semi -trailer Kingpin and Fifth wheel.

The container is directly placed on the semi -trailer frame， and the container is fixed and locked with a twist lock device equipped on beam end. Ul traton Series Skeleton Semi Trailer has 2-axle 20ft Skeleton Semi Trailer, 3-axle 20ft Skeleton Semi Trailer, 2-axle 40ft Skeleton Semi Trailer, 3-axle .40ft Skeleton Semi Trailer for your choice. Customized design is also welcome. I-shaped longitudinal beam is welded by sub- merged arc welding machine by superior quality of low alloy carbon steel with good mechanical properties on yield strength, tensile strength,elongation， curving ratio,impact energy etc.. Our technical staff, who are responsible for welding， often participate in training to improve skills better. The whole body of chassis frame of Ultraton Skeletal Semi Trailer is processed by shot blasting machine to eliminate welding stress and ensure long lasting rust proof. The pre-assembly and welding is finished on a specific assemble platform to ensure the precise measurement and durable structure.

As one of the good skeletal trailer manufacturers in China,Ultraton has container skeletal trailer or sliding skeletal trailers for sale ,welcome to know about it.