Beijing Silk Road Enterprise Management Services Co.,LTD
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Durable Safety Standard Welded 30x3 Steel Bar Grating From China
Description:
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
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
Grating Standardizations:
| Countries | National Standards for Grating | Materials | Galvanizing Standards |
| China | YB/T 4001.1-2007 | GB 700-88 | GB/T13912-2002 |
| America | ANSI/NAAMM(MBG531-00) | ASTM(A36) | ASTM(A123) |
| Britain | BS4592-1995 | BS4360(43A ) | BS729 |
| Australia | AS1657-1992 | AS3679 | AS1650 |
| 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. |
| 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 |
FAQ
1. Is your samples free?
Yes, we can provide free samples to my clients.
2. How many days will the samples be finished?
Generally the samples will be sent immediately by the air express in 2~3 days if the goods are in stock.
3. And how about the mass production?
Normally within 20-25 days according to your order.
4. Are you a manufacture?
Yes, we have been in providing the products in this field for 15 years.
5. Is customized availabls?
Yes, we can OEM according to your detailed drawings.