curtain side semi-trailer Product Description General: Length: 13,000mm Width: 250mm Height: 3,990mm Inner dimensions: 12,800 x 2,400 x 2,500mm Pay load: 40 tons Dead weight: 7,000kg Running gear Suspension: multiple leaf spring suspension with equalizer beam Option: SAF spring suspension, SAF/BPW air suspension and FUWA point suspension Sub frame: Eight locking pin design suit for 2 x 20-foot, 1 x 40-foot container and center lock pin can laid down Drums: outboard mounted and hub piloted cast steel Hubs: cast steel 10 studs and oil seals Wheels: steel disc, 8.0 to 20 and preprinted white Option: 8.5 to 20 and 8.25 to 22.5 Tires: eight sets, 10.00 to 20 tire and china famous brand Option: 12.00 to 20, 11R20, 12R20, 11R22.5 and 12R22.5 Axles: FUWA 13 tons Axle number: three Option: BPW, SAF and York brand Brakes dual lain brake system, non-asbestos and includes automatic slack adjusters ABS system: without and available upon request Valve: Waco emergency relay valve Brake chambers: 30/30 chambers and air-actuated Springs seven nose of leaf springs, width x thickness: 90 x 16mm Under frame: Main beam: I shape, 500mm height and mild alloy Q345b Tensile strength 34.5kg/mm Automatic submerged arc welding, top flange 16mm, button flange 16mm and middle flange 6mm thickness Cross beam: U shape and mild alloy Q345b Tensile strength 34.5kg King pin: two-inch welded type joist Landing gear: FUWA and double-speed linkage MUD flaps: anti-sail and mounted on sliding tandem Bumper heavy duty bumper at the end Appendix: one tool box Two spare tire carriers