... mainbeam of the semi-trailerUPPER & LOWER WING-PLATE (MM)THICKNESS, UPPER, 14 MM LOWER, 16 MMMATERIAL, Q345 CARBON ... STEEL MAIN BEAM (MM)THICKNESS, 8MMMATERIAL, Q345 CARBON STEELHEIGHT OF THE BEAM, 500MMNUMBERS, 2 ... THE PAINT, 1.EPOXY ZINC RICH PRIMER THICKNESS, 30—40Micron2.EPOXY MID PAINT THICKNESS, 30ΜM3.EPOXY SURFACE PAINT THICKNESS, 30ΜMThe paint thickness will ...