Heavy Duty Welded Steel Bar Grating is strong enough for extreme load areas, such as parking lots, highways, terminals, airports and heavy-duty industrial zones. You can expectHeavy Duty Welded Steel Bar Grating to hold up over time while being subjected to large pressures.  

Floor grating - heavy duty ( see Fig. 1) specs as following:
The load bearing bars are produced from steel which conforms to the following equivalent standards: AS3679 Grade 250, BS4360 Grade 43A and ASTM A36 or equivalent. 
Serrated surface (serrated bar), banded with the same size flat bar (end banding type), hot dip galvanized. 
The minimum average hot dip galvanized coating required by standards AS1650, BS729 and ASTM A123 is 610gms/sq metre (the minimum average thickness of galvanized coating must be 87.14µm).

Width: 600mm / 900mm / 1200mm
Length: 1000mm - 1800mm