... by customer’s requirements.Specifications of Steel Bar Grating 1)The shape of bearing bar: Plain type (may be omitted ... galvanizing is generally recommended. 5)Material: Q235 in line with GB/T700 steel 6)Application: flooring, catwalk, mezzanines/ ... cover, drainage pit cover, maintenance platform, pedestrian/crowded pedestrian, factory, workshop, motor rooms, trolley channel, heavy loading area, boiler ...