... >Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>Hot-dipped galvanized,Painted,Untreat steel structure grating ... Treatment: Hot dip galvanized , Painted , Untreated.3) Shape of bearing bars: Plain bar style , Serrated bar style ... , I Bar style4) Market: USA , Middle East ---Kuwait, UAE ... 3 to 100 x 10;the specification of I-section type is 25 x 5 x 3, ...