Mild Steel Heavy Duty Steel Grating 75mm x 6mm Metal Drain Grates Steel Bar Grating
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) | ||
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