... 4.0mm, zinc coating: 85um, for security project service. Galvanized Guardrail Plate Material: Zinc Thickness of coating: 3.0mm, zinc coating ... : 40-60 um 4.0mm, zinc coating: 85um PE Painted Guardrail Plate Material: Polyester Thickness of painting: ≥ 76um Surface: Smooth, ... 1500V Column Diameter: 114mm for 3.0mm guardrail plate 140mm for 4.0mm guardrail plate Beacon: Buried and drived Splicing hole ...