... , wharf, airport, parking, highway, railway, industrial engineering and so on.Type of bearing barW--welded steel grating L-- pressure-locked C ... -93)Austrilia: AS1657-1992Marks:Example: G 325/30/100 WFG Type:A variety of specifications can meet all demands of shapes, sizes ... - up and very safe.4. Common ditch covers:5. Installation type:Introduction to common steel grating:Bearing bar centers at 20mm ...