Active Member
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[China]
Address: East Industrial Zone, Anping, Hebei, China
Contact name:Devin Wang
Hebei Qijie Wire Mesh MFG Co.,ltd. |
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Galv welded grating floor, galvanized steel grid floor
Steel grating is welded 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 weldingring which is controlled by computer.so we can produce high quality gratings
withfirm welding,smooth surface and high strength.
1.material: low carbon steel,mid steel or stainless steel
2.Surface Treatment: Untreated, Painting or Hot dip Galvanizing
3.Specification of steel grating
(1)The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type
| No | Item | Description |
| 1 | Bearing bar | 25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm |
| 2 | Bear bar pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc. |
| 3 | Cross bar pitch | 38,50,76,100,101.6mm |
| 4 | Material | Q235,A36,SS304 |
| 5 | Surface treatment | Black, hot dipped galvanising, paint |
| 6 | Standard | China: YB/T 4001.1-2007 |
| USA: ANSI/NAAMM(MBG531-88) | ||
| UK: BS4592-1987 | ||
| Australia: AS1657-1985 |
4.Tolerance of hot dip galvanized steel grating
The allowed deviation of length is +0/-5mm, while the allowed
deviation of width is +/-5 mm.
The non-perpendicularity of bearing bar is allowed no more than 10%
of width of bearing bar.
Cross bar surface should not surpass bearing bar surface 1mm,
beginning & end of cross bar should not surpass
the end surfaces of two sides of grating 2mm.
5. steel grating application
Steel grating used in flooring, catwalk, mezzanines/decking, stair tread, fencing, ramp, dock, trench cover, drainage pit
cover, maintenance platform,
pedestrian/crowded pedestrian, factory, workshop, motor rooms, trolley channel, heavy loading area, boiler equipment
and heavy equipment area, office buildings,
apartments, train stations, department stores, hospitals,amusement parks,etc
1) Steel grating Material:
Mild Steel (Low Carbon Steel) ( GB700,ASTM(A36),BS4360(43A) )
2) Surface Treatment:
Hot dip Galvanizing ( GB/T13912,ASTM(A123),BS729 )
3) Steel grating standards:
A) China: YB/T4001
B) USA: ANSI/NAAMM (MBG531)
C) UK: BS4592
D) Australia: AS1657
E) Japan: JJS
| Bar Size Inches: | Weight Per Sq. Ft: | Sect. Prop. Ft. of Width: |
| 3/4 x 3/16 | 5.67 | Sx=0.194 / 1x=0.73 |
| 1 x 1/8 | 5.15 | Sx=0.228 / 1x=0.114 |
| 1 x 3/16 | 7.35 | Sx=0.344 / 1x=0.171 |
| 1-1/4 x 1/8 | 6.2 | Sx=0.358 / 1x=0.223 |
| 1-1/4 x 3/16 | 9.03 | Sx=0.536 / 1x=0.335 |
| 1-1/2 x 1/8 | 7.35 | Sx=0.515 / 1x=0.387 |
| 1-1/2 x 3/16 | 10.94 | Sx=0.773 / 1x=0.579 |
| 1-3/4 x 3/16 | 12.62 | Sx=1.052 / 1x=0.902 |
| 2 x 3/16 | 14.30 | Sx=1.375 / 1x=1.375 |
| 2-1/4 x 3/16 | 15.87 | Sx=1.740 / 1x=1.958 |
| 2-1/2 x 3/16 | 17.55 | Sx=2.148 / 1x=2.685 |
| Note: Sx = (Sec. Mod. Ft Width) 1x = (Mom. of Inertia Ft. Width) | ||
