... surface, strong and beautiful welding spot,accurate size.Compared to checkered plate products, gratings are featured well by:Light ... , modern-styled, attractive appearance, non-slip and safe, easy to clean and installation, durable etc. Steel gratingType:W--welded steel ... Austrilia: AS1657-1992Marks:Example: G 325/30/100 WFGINTRODUCTION TO COMMON STEEL GRATINGS:Bearing bar centers at 20mm: This kind ...