111
It is a kind of road crash barrier used to prevent errant vehicles from running out of the roads and impacting the roadside buildings or other objects. So it is most commonly fixed on the side of the highways, dock areas, aisles, especially on curves and slopes for protection against run-off-road collisions.
The galvanized W-Beam is the most common highway guardrail, which are longitudinal highway barriers designed to reduce the severity of run-off-road collisions.
The machine is widely used in producing guardrail metal sheet for highway.