... multi-functions. Specifications Of 50 Ton Drop Side Cargo trailer (single tyre),container trailer,low bed trailer,flat bed trailer,dump ... I beam; Opting for high tensile steel Q345B, welded by automatic Submerged-Arc processes. Top Flange 14mm,width 140mm; Middle Flange ... nos. Staggered on either side. Drop Side Cargo box trailer (single and double tyre)