Tru-weld steel gratings are forge welded, a system in which Fisher & Ludlow was a pioneer. In this process the bearing and cross bars are permanently forged together by heat and pressure into a single unit construction which results in greater strength per pound than mechanical assembly methods. The twisted bars provide a non- slip surface for extra safety.

For applications where extremely slippery conditions prevail, serrated Tru-weld offers extra grip on the bearing bars in addition to all the features mentioned above.

Metric
U = Safe Uniform Load, in kPa.
C = Safe Concentrated Load, in kN per metre of grating width.
D = Deflection in mm.