... covers etc. We can design and manufacture standard steel grating and in customized shapes per client ... s requirement and 30, 40, 60mm are recommended,America standard is also available <1'' x 3/16'', ... client's requirement and 50, 100mm are recommended, America standard is available.4) Material: Mild Steel (Low ... etcI bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etcUS standard: 1''x3/16'', 1 1/4''x3/16'', ...