W-beam guardrails get their name from their distinctive “W”-shaped steel profile. These beams are typically made from hot-dip galvanized steel, which makes them corrosion-resistant and durable, suitable for Malaysia's tropical climate. https://www.tumblr.com/malaysiavgsteel/783586401429209088/enhancing-road-safety-with-w-beam-guardrails-in?source=share