Item

steel grating  

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.

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, 

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, Japan:JIS

Application

-Rotation ways, channels, and platforms for   pump rooms and engine rooms in various ships;

-Flooring in various bridges such as   railway bridge sidewalks, over-bridges across the street;

-Platforms for oil extraction sites, car   washing sites and air towers;

-Fencings for car-parks, buildings and   roads; drainage trench covers and drainage pit covers for high strength 

Characteristics

1,high strength and light   structure

2,Powerful   anti-corrosion, durable and long working life

3,Beautiful appearance,   bright surface

4,No   dirt-rain-snow deposit, automatic cleaning, easy maintenance

5,Good   ventilation, day-lighting, heat-dispersing, resistant is sliding and   explosion

6, Easy   Installation and disassembly