The Segmented Rectangular Tube Welded Bed The internal structure of the bed adopts the aircraft metal honeycomb structure, which is welded by a number of rectangular tubes. Stiffeners are arranged inside the tubes to increase the strength and tensile strength of the bed, it also increases the resistance and stability of the guide rail so as to effectively avoid the deformation of the bed. High strength, stability, tensile strength, ensuring 20 years of use without distortion; Thickness of rectangular pipe wall is 10mm,and weights 4500 kg.