ISO9001 steel grating Material:Q235 Plain or Serrated ... Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel ... 3 to 100 x 10;the specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3 ... , 40 x 5 x 3, 50 x 5 x 3, 50 ... is available :1'' x 3/16'', 1 1/4'' x 3/16'', 1-1/2'' x 3/16'', 1'' x 1/4 ...