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structural trench drain cover steel grating (manufacturer)
1>Material:low caebon steel bar
2>Surface Treatment: Un-Coated, Painted, Hot Galvanized
3>bearing bar pitch:30mm,40mm,60mm
4>cross bar pitch:50mm,100mm
5>bearing bar thickness:3mm,5mm(as a common)
6>bearing bar widch:20mm,25mm,32mm,40mm,45mm,50mm,55mm,60mm(as a common)
7>bearing bar style: Plane style,I -Serrated style,anti-slip
8>Quality Control:
Steel Grating standard:
CHN - YB/T4001-1998
USA - ANSI/NAAMMMBG531-88
ENGLAND - BS4592-1987
AUSTRALIA - AS1657-199
Steel Standard: CHN - GB700-88
Hot Galvanized Standard: CHN - GB/T13912-92
Kinds of types are avalibale.
Common specifications:
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: AS1657-1992, Japan:JIS |
Beautiful; surface gloss, Cooling, ventilation, lighting, explosion, prevent slippery performance is good, Prevent product contamination. Widely used in petroleum chemical industry, power plant,Water, sewage, municipal engineering, environmental sanitation engineering fields of the platform, aisle, floorway ,Ditch cover, covers, ladders, fences, guardrail etc.





In strict accordance with the customer's requirements
Usual width and thickness of bearing bar: 25*3, 25*5, 30*3, 30*5, 32*3, 32*5, 40*3, 40*5, 50*5, 60*5, 70*5 mm
Width of bearing bar: 20, 25, 30,32,40, 50, 60, 70mm
Bearing bar pitch: 30mm, 40mm, 60mm



bearing bar surface:
plain style

I serrated style

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