Hot Dip Galvanized Steel Grating- GI Steel Grating
Steel grating is made of flat steel which is cross-aligned
according to a certain spacing and cross bar(twisted square
steel,square steel,round steel, flat steel, etc.)and welded into a
steel product with a square lattice in the middle.
Steel grating has been widely used in various industries at home
and abroad, mainly used as industrial platform, ladder pedal,
handrail, channel floor, railway bridge sideway, high-altitude
tower platform,drain cover,manhole cover,road barrier, parking
Field and so on. It has the advantages of ventilation, light
transmission, anti-skid,strong bearing capacity, beautiful and
durable, easy too clean, easy to install, reduce wind resistance
and prevent accumulation of dirt.
The distance between the loaded flat steel:the center distance of
two adjacent loaded flat steels,commonly used 30mm,40mm,60mm.
Crossbar spacing: Thr center spacing of two adjacent rails is
usually 50mm,100mm, and can be produced according to customer
requirements.
The width of the flat steel:20mm 25mm 30mm 40mm 45mm 50mm 55mm
60mm.
Flat steel thickness:3mm 4mm 5mm
Welded Steel Bar Grating Specification:
| No. | Item | Detailed Description |
| 1 | Bearing Bar | 25x3, 25x4.5, 25x5, 30x3, 30x4, 30x5, 30x5.5, 32x5, 40x5,
50x5,60x5,70x6, 75x10---100x10mm etc; I bar: 25x5x3, 30x5x3,
32x5x3, 40x5x3 etc |
| US standard: 1' ' x3/16' ' , 1 1/4' ' x3/16' ' , 1 1/2' ' x3/16' '
, 1' ' x1/4' ' , 1 1/4' ' x1/4' ' , 1 1/4' ' x1/8' ' , 1 1/2' '
x1/8' ' etc |
| 2 | Bearing Pitch | 12.5, 15, 20, 25, 30, 30.3, 32.5, 35, 38.1, 40, 41.25, 60, 80mm etc |
| US standard: 19-w-4, 15-w-4, 16-w-4, 11-w-4, 19-w-2, 15-w-2 etc |
| 3 | Cross Bar Pitch | 38, 40 50, 60, 76, 80, 100, 101.6, 120mm, 2' ' & 4' ' etc |
| 4 | Steel Grade | ASTM A36, A1011, A569, Q235, S235JR, SS304, Mild steel & Low carbon
steel, etc |
| 5 | Surface Treatment | Black, self coloures, hot dip galvanized, painted, spray coating |
| 6 | Grating Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar |
| 7 | Grating Standard | China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88), |
| UK: BS4592-1987, Australia: AS1657-1985, Japan: JIS |
Metal Grate Picture:
