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Cast Iron Grate
Length and Breadth 300-1200mm
Thickness 12mm - 50mm
Shape: Round, Square, Rectangle

Steel Grating
It is steel bar according to a certain distance and cross arranged and welded into the middle of a square latice with an iron and steel products .

bearing bar 25/3mm , 25mm/4mm , 25mm/5mm , 30/3mm , 30/5mm,32/3mm,32/5mm ,40/3mm75/5mm,100/10mm
opening 30mm x 32mm , 30mm x 60mm, 30mm x 100mm , 38mm x 100mm , 40mm x 100mm , 50mm x 50mm ,50mm x 100mm etc
surface treatment black , hot dip galvanized
type plain bar, serrated bar , I shape bar
Hot dip galvanized steel grating tolerance

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.

Features
Corrosion resistance, Rust resistance.
Anti-slip resistance, Good air circulation.
Good drainage performance, Easy to install and uninstall.
High strength-to-weight performance,Durable and long lifespan.

Applications
Steel grating is widely used for work platforms. Catwalks, transportation
servicing areas and vehicle steps.

Half Moon Grate

"Gratings are assembled grids of parallel bearing bars with crossbars used to space and hold the bearing bar erect. The assembled grid is used to cover the floor of any of various openings. Gratings provide a surface but allow air, light, heat, sound and water to pass through. It is strong and durable and maintenance-free.
Electro Forged Gratings are manufactured using Electro Forged machine with the flexibility and capacity of welding an extensive range of bearing bar of size from 25*3 mm up to 50*5 mm and crossbar size from 6 mm to 8 mm"

25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm 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
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
Twisted Cross Bar Pitch
38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc
Material Grade
ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400,

Mild steel & Low carbon steel, etc
Surface Treatment
Black, self colour, hot dip
galvanized, painted, spray coating
Grating Style
Plain / Smooth, Serrated /teeth, I bar, serrated I bar
Standard
China: YB/T 4001.1-2007,
USA: ANSI/NAAMM(MBG531-88),
UK: BS4592-1987, Australia: AS1657-1985,
Germany: DIN24537-1-2006, Japan :J

Steel Gratings

Serrated Gratings

Fabricated Gratings

Size 300x600 mm
Material CI
Shape Rectangular
Brand Prit
Surface Treatment Color Coated

Product Material Specification Military Specification
Light Duty Welded, Light Duty Press-Locked, Light Duty Swaged --ASTM A-569 (1/8, 3/16, 1/4) --ASTM A-36 (1/4) by inquiry MIL-G-18014 (Ships)
Heavy Duty Welded Steel --ASTM A-36 (1/4, 5/16, 3/8,1/2) --Other (by inquiry)