Steel Grating
Reference Standard of Steel Grating
Country | Steel Grating Standard | Galvanization Standard |
China | YB/T4001-1998, YB/T4001-2007 | GB/T 13912 |
USA | ANSI/NAAMM-MBG531 | ASTM A123-89 |
UK | BS4592-2006 | BS 729 |
Australia | AS1657-1992 | AS/NZS 4680, AS1650 |
Material and Surface Treatment of Steel Grating
Material: Mild Steel, Stainless Steel
Surface Treatment: Black/Untreated (U), Hot dip galvanizing (G), Painting (P)
Components of Steel Grating
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Bearing Bar: the even rolling flat steel, major material for steel grating, which two ends on the base of girders. | Cross Bar: wringed steel bar with the square section, to fix the bearing bars by welded upon them |
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Wrapped Sheet: steel sheet welded together with the ends of bearing bars, to seal the edge of grating. | Length (Span): the most measurement according to the parallel direction of bearing bars, |
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Width: the measurement according to the parallel direction of cross bars | Punched teeth: semicircle dent punched on the bearing bar to strengthen the anti-lip capacity |
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Anti-slip Bar: coarse bar fixed on the front edge to prevent slip | Footplate: Flat steel welded on the edge of grating, the top is higher than the grating's fence |
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Hollow and Gap: parts cut from the grating in order to make tubes or equipment cross, or avoid obstacle | Net Area: the actual area of grating without any hollow and gaps |
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Total Area: area calculated according to most dimension of grating, including with all hollow and gaps |
Symbol of Steel Gratings
Classifications of Steel Gratings
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F Type Bearing Bar: Flat Bar | S Type Bearing Bar: Serrated Bar |
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I Type Bearing Bar: I beam | SI Type Bearing Bar: Serrated I Beam |
Dimension of Steel Gratings
Cross Bar Pitch: 24-200mm
Bearing Bar Pitch: 15-90mm
Bearing Bar Sizes: Thickness 3-8mm, Height 20-150mm
Compound Steel Grating
Compound steel grating is composed of chequered plate on sealed surface & steel grating with certain spanning capability. Compound steel grating is formed of any type of steel grating and chequered plate in different thicknesses. The grating of G323/40/100, G253/30/100 or G323/60/100 is generally used as support plate & the chequered plate with 3mm thickness is used as upper plate, while the plate of 4mm, 5mm or 6mm thickness may also be used based on customers' requirements.
Steel Grating Ceiling
Steel Grating Ceilings, which are designed & produced by steel gratings, are with light structure but high strength to have people walking on. It is hot dipped galvanized, anti-corrosion and durable, paint free maintenance. It is widely used tobacco manufacturing industry, industrial plants, large gymnasium, exhibition, shopping mall, stations, yard, airport, etc.
Steel Grating Stair Tread
Types of Steel Grating Stair Tread
Max. Length of Steel Grating Stair Tread
Recommend width of Steel Grating Tread
Steel Grating Cover
Steel Gratings could be used as covers of ditches, pipeline trenches, underground channels, ventilation shaft manhole, and inspection well etc. at sidewalk, driveway, courtyard or buildings. The steel grating ditch cover usually includes fix frame and movable steel grating cover, and tightening device and anti-theft device may be supplied if required.
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Ditch Cover | Manhole Cover | Underground Channel |
Customized Steel Grating
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