1.Grating Types: | W--welded steel grating L-- pressure-locked C-- socket-welding |
2.Bearing bar Pitches: | 15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm recommended. |
3.Cross bar Pitches: | 50, 100mm are recommended. |
4.Surface treatment: | G - galvanized P - painted U - untreated |
5.Grating standard: | China: YB/T4001.1-2007(YB/T4001.1-1998) Britain: BS4592-1:1995 US: ANSI/NAAMM(MBG531-93) Australia: AS1657-1992 |
6.Marks: | Example: G 325/30/100 G255/40/50 |