steel frame lattice 1.material:steel,galvanized steel 2. ... 20-60mm 4.high quality and competitive price steel frame lattice:material:steel,galvanized steelthickness:3,4,5, ... Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel ... load Bar) specification (mm):The specification of plain type and serrated type bearing bar is 20x3 to 100x10, the specification ...