... highway guard rail For traffic safety purpose W beam and thri-beam are available Hot dipped galvanized Highway Guardrail & W BeamWhere Guard Rail Should ... most situations, we recommend the use of W-Beam guard rail, the optimal choice for safety, strength, durability, and cost effectiveness. ... (Class B) steel and coated in rust-resistant zinc, W-Beam guard rail is available in standard 25' and 12 ...