PREPARATION METHOD OF ECO-FRIENDLY GUARD RAIL STRUCTURES OF IMPROVED DURABILITY, FOULING RESISTANCE AND VISIBILITY, AND ECO-FRIENDLY GUARD RAIL STRUCTURES PREPARED BY THE SAME

摘要

PURPOSE: An environmentally friendly guardrail structure with excellent durability, stain resistance, and visibility and a manufacturing method thereof are provided to fundamentally prevent environmental contamination and to significantly lower a production cost by simplifying a production process. CONSTITUTION: A manufacturing method for an environmentally friendly guardrail structure with excellent durability, stain resistance, and visibility comprises the following steps: preheating guardrail structure steel material and injecting process gas at the same time to form a nitride layer on the surface of the steel material; cooling the surface of the steel material by applying water; applying paint made of environmentally friendly powers on the improve surface of the steel material; partially applying glass beads to a powdery paint composition in a melted state while maintaining the viscosity of the powdery paint; and cooling and drying the powdery paint composition.