Thrie Beam Guide Rail features its shape of three waves, which has an added corrugation on the basic of traditional W-Beam.
Thrie Beam Guide Rail

Thrie Beam Guide Rail features its shape of three waves, which has an added corrugation on the basic of traditional W-Beam. Thrie Beam Guide Rail is a longitudinal barrier designed to re-direct errant vehicles. Thrie Beam derives its name from the general cross-sectional shape of the beam. 

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