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Mild Steel Heavy Duty Steel Grating 75mm x 6mm Hot Dipped
Galvanized
Steel grating is made by the world first-class 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 welding ring which is controlled by
computer. So we can produce high quality gratings with firm
welding, smooth surface and high strength.
1. Steel Grating Material:Q235 Steel or stainless steel grating.
2. Steel Grating Surface Treatment: Untreated, Painting or Hot
Dipped Galvanizing
Heavy Duty Grating Specification
Load Bearing Flat Bar size | Thickness≥6mm, depth ≥50mm |
50X6,50X6,60X6,75X8,100X8,100X10mm…… | |
Pitch of Load bearding flat bars (mm) | 20, 30, 30.6,32.5, 34,34.8,35.3, 40, 60, 80…… |
Pitch of cross bars (mm) | 38.1, 50, 50.8, 70, 75, 80, 100, 101.6, 102…… |
3. Size:The sizes 6meter x1 meter ,5.8meter x 1meter are the common
size to Aisan and Middle East markers.
The plain galvanized steel grating commonly used on bridge,refinery
,power plant,Sewage treatment plant and so on.
4. Standards:
A) China: YB/T4001.1-2007
B) U.S.A.: ANSI/NAAMM (MBG531-88)
C) U.K.: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS
5. Hot Dipped Galvanizing Standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
6. Application
Steel grating can be widely used in petrochemical,water
plants,sewage treatment
plants,municipalengineering,environmental engineering and other
fields of platforms, walkways, trestlebridge, ditch cover, covers,
ladders, fences and railings etc.
Bar Size Inches: | Weight Per Sq.Ft: | Sect.Prop.Ft. Of Width: |
1-1/4x1/4 | 12.08 | Sx=0.642/1x=0.420 |
1-1/4x3/8 | 17.55 | Sx=1.009/1x=0.63 |
1-1/2x1/4 | 14.35 | Sx=0.969/1x=0.726 |
1-1/2x5/16 | 17.55 | Sx=1.211/1x=0.908 |
1-1/2x3/8 | 20.86 | Sx=1.452/1x=1.089 |
1-3/4x1/4 | 16.52 | Sx=1.318/1x=1.153 |
1-3/4x3/8 | 24.16 | Sx=1.977/1x=1.730 |
2x1/4 | 17.56 | Sx=1.722/1x=1.722 |
2x5/16 | 23.13 | Sx=2.152/1x=2.152 |
2x3/8 | 27.47 | Sx=2.583/1x=2.583 |
2-1/4x1/4 | 20.86 | Sx=2..179/1x=2.451 |
2-1/4x3/8 | 30.78 | Sx=3.268/1x=3.677 |
2-1/2x1/4 | 23.13 | Sx=2.690 / 1x=3.362 |
2-1/2x5/16 | 28.61 | Sx=3.362 / 1x=4.203 |
2-1/2x3/8 | 34.08 | Sx=4.035 / 1x=5.044 |
3x1/4 | 28.89 | Sx=3.874 / 1x=5.810 |
3x5/16 | 35.50 | Sx=4.843 / 1x=7.263 |
3x3/8 | 42.11 | Sx=5.811 / 1x=8.716 |
3-1/2x1/4 | 33.33 | Sx=5.272 / 1x=9.226 |
3-1/2x3/8 | 48.62 | Sx=7.909 / 1x=13.840 |
4x1/4 | 37.67 | Sx=6.886 / 1x=13.772 |
4x5/16 | 46.45 | Sx=8.608 / 1x=17.215 |
4x3/8 | 55.23 | Sx=10.330 / 1x=20.660 |
4-1/2x1/4 | 42.11 | Sx=8.716 / 1x=19.610 |
4-1/2x3/8 | 61.84 | Sx=13.074 / 1x=29.416 |
5x1/4 | 46.45 | Sx=10.761 / 1x=26.901 |
5x5/16 | 57.40 | Sx=13.451 / 1x=33.626 |
5x3/8 | 68.46 | Sx=16.141 / 1x=40.352 |
5-1/2x1/4 | 50.89 | Sx=13.020 / 1x=35.804 |
5-1/2x3/8 | 74.69 | Sx=19.530 / 1x=53.707 |
6x1/4 | 55.23 | Sx=15.495 / 1x=46.485 |
6x5/16 | 68.46 | Sx=19.369 / 1x=58.106 |
6x3/8 | 81.57 | Sx=23.343 / 1x=69.127 |
Note: Sx = (Sec. Mod. Ft Width) 1x = (Mom. of Inertia Ft. Width) |