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Specifications
1.Full range in bearing bar size and mesh size2.Largest production capability
3.Best Price
4.Reliable manufacturer
5.ISO
Hot dip galvanized steel grating standard
1.Specificaiton
No. |
Item |
Description |
1 |
Bearing Bar |
25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 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 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc |
2 |
Bearing Bar Pitch |
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. |
3 |
Twisted Cross Bar Pitch |
38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc |
4 |
Material Grade |
ASTM A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc. |
5 |
Surface Treatment |
Black, self colour, hot dip galvanized, painted, spray coating. |
6 |
Grating Style |
Plain / Smooth, Serrated /teeth, I bar, serrated I bar. |
7 |
Standard |
China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88), UK: BS4592-1987, Australia: AS1657-1985, Japan:JIS |
2.Applications
a.Rotation ways, channels, and platforms for pump rooms and engine rooms in various ships;
b.Flooring in various bridges such as railway bridge sidewalks, over-bridges across the street;
c.Platforms for oil extraction sites, car washing sites and air towers;
d.Fencings for car-parks, buildings and roads; drainage trench covers and drainage pit covers for highways.
3.Manufacturing process
Steel grating is made by the world first-class Italian ORSOGRIL equipment, which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance. Cross bar is pressed into the bearing bar by high tension resistance weldingring which is controlled by computer. So we can produce high quality gratings with firm welding, smooth surface and high strength.
4.Surface process of grating
Hot-dipped Galvanizing
Normally, hot-dipped galvanizing will be carried out after end welding process. When the thickness of bearing bars is not less than 5mm, the weight of average Zinc Layer will not be less than 610g/m2.
When the thickness of bearing bars is less than 5mm, the weight of average Zinc Layer will not be less than 460g/m2. The quality and requirements after hot-dipped galvanizing are according to the standards of GB/T13912
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