... trailer and manufacture technologyMAIN MATERIAL OF THE CHASSIS, MAIN BEAM, Q345 CARBON STEEL/ CROSS BEAM, Q235 CARBON STEEL(square pipe steel ... , UPPER, 14 MM LOWER, 16 MMMATERIAL, Q345 CARBON STEEL MAIN BEAM (MM)THICKNESS, 8MMMATERIAL, Q345 CARBON STEELHEIGHT OF THE BEAM, 500MMNUMBERS, 2 ...