Hot Dip Galvanized Steel Bar Grating Used For Metal Grate Flooring
Steel Bar Grating Decription:
Steel Grating /grate floor made by welding with flat steel and cross/round bars with certain distances. Our Steel Grating enjoy the feature of high strength, light structure, high bearing, convenience for loading and other properties. The hot dipped zinc coating gives the product excellent anti-corrosion.
Carbon Steel Bar Grating is an ideal option when your project requires a strong material that will not be exposed to an expressly corrosive environment. we suppliy both smooth and serrated bar grating. Bar gating is available in galvanized, painted black, plain steel, light duty, and heavy duty.
1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10; The specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.
2) Bearing Bar Pitch (center to center):
12.5, 15, 25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm etc, also be according to client's requirement and 30, 40, 60mm are recommended,
America standard is available <1'' x 3/16'', 1 1/4'' x 3/16'', 1-1/2'' x 3/16'', 1'' x 1/4'', 1-1/4'' x 1/4'', 1 1/2'' x 1/4''(19-w-4) and so on. >
3) Cross Bar Pitch (center to center):
38.1, 40, 50, 60, 76, 80, 90, 100, 101.6, 102, 135mm and so on
4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel
5) Surface Treatment:
Untreated, Painting or Hot DIP Galvanizing
6) Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS.
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Specifications of serrated welded steel grating
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Materials: low carbon steel, stainless steel.
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Surface treatment: galvanized, powder coating, painted color.
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Height of bearing bar: 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm.
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Thickness of bearing bar: 2 mm, 3 mm, 4 mm, 5 mm.
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Mesh size: 34 mm × 38 mm
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Packaging:Strap packing.
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Pallet packing.
Screw rod fixation.
Features of serrated welded steel grating
TOP SURFACE
Typically supplied with a plain surface. On our most popular products a Serrated surface (S) is also available. Please refer to the loading charts in this section of the catalogue to see which Mild Steel grating types are available with a Serrated surface.
Learn Steel Grating
Specification of Steel Grating
Steel Grating Common Size Table List:
| Cross Rod Pitch | load Bar Pitch | Steel Bar Grating load Bar Specification(Width×Thickness) |
| 20×3 | 25×3 | 32×3 | 40×3 | 20×5 | 25×5 |
| 30 | 100 | G203/30/100 | G253/30/100 | G323/30/100 | G403/30/100 | G205/30/100 | G255/30/100 |
| 50 | G203/30/50 | G253/30/50 | G323/30/50 | G403/30/50 | G205/30/50 | G255/30/50 |
| 40 | 100 | G203/40/100 | G253/40/100 | G323/40/100 | G403/40/100 | G205/40/100 | G255/40/100 |
| 50 | G203/40/50 | G253/40/50 | G323/40/50 | G403/40/50 | G205/40/50 | G255/40/50 |
| Cross Rod Pitch | load Bar Pitch | steel bar grating load Bar Specification(Width×Thickness) |
| 32×5 | 40×5 | 45×5 | 50×5 | 55×5 | 60×5 |
| 30 | 100 | G325/30/100 | G405/30/100 | G455/30/100 | G505/30/100 | G555/30/100 | G605/30/100 |
| 50 | G325/30/50 | G405/30/50 | G455/30/50 | G505/30/50 | G555/30/50 | G605/30/50 |
| 40 | 100 | G325/40/100 | G405/40/100 | G455/40/100 | G505/40/100 | G555/40/100 | G605/40/100 |
| 50 | G325/40/50 | G405/40/50 | G455/40/50 | G505/40/50 | G555/40/50 | G605/40/50 |
Recommended length table:
| Max length(mm) |
| Flat Steel section size | 25×3 | 25×5 | 32×5 | 40×5 |
| Series 1 | 550 | 900 | 1300 | 1600 |
| Series 2 | 450 | 750 | 1200 | 1500 |
| Series 3 | — | 550 | 850 | 1350 |
use of steel grating
High strength and high bearing capacity:
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Non-slip, anti-corrosion, not easy to deform.
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High safety performance.
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Do not accumulate rain, snow and dust.
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Simple and beautiful appearance.
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Easy to install and remove to extend the lifespan.
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Applications of serrated welded steel grating
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Serrated welded steel grating is widely used as platforms, stair treads, walkaways and floors in industrial, civil and commercial buildings.
Advantage:
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No corrosion traps around joints
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High strength to weight ratio
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Allows shaping without loss of strength
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Available plain or serrated
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Allows passage of heat, light, water and ice.
The applications of steel grating:
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-Fencings for car-parks, buildings and roads; drainage trench covers and drainage pit covers for highways;
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-Flooring in various bridges such as railway bridge sidewalks, over-bridges across the street;
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-Rotation ways, channels, and platforms for pump rooms and engine rooms in various ships;
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-Platforms for oil extraction sites, car washing sites and air towers;
Steel grating standard:
| Country | Steel grating standard | Steel material standard | Hot galvanizing standard |
| China | YB/T4001-1998 | GB 700-88 | GB/T13912-2002 |
| USA | ANSI/NAAMM(MBG531-88) | ASTM (A36) | ASTM(A123) |
| England | BS4592-1987 | BS4360 ( 43A) | BS729 |
| Australia | AS1657-1992 | AS3679 | AS1650 |
Type of Steel Grating
Comparison of Feature:
Plain:One of the most widely used grating, available for flooring, sidewalk, dranage pit cover, stair tread, etc. | 
Serrated:Better non-skid property & safety comparing to plain grating | 
I-shape:Lighter, more economical and practical comparing to plain grating. |
Process of steel grating:
Manufacturing Tolerance of the Gratings
There is no maximum allowable tolerance for every dimension given here.
Steel bar grating is the most popular of all grating types due to its strength, cost-efficient production and easy installation,
Universally used in most general industrial plants as well as commercial buildings,
It has wide applications as walkways, platforms, safety barriers, drainage covers and ventilation grates.
Standard welded steel bar grating is also ideal for use as mezzanine decking since it supports the same loads as comparable solid flooring, more than that
Steel Bar Grating Specification:
| Type | Specification | Biggest Size | Cross Bar Width | Bearing Bar Length |
| TMISG001 | G325/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG002 | G255/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG003 | G323/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG004 | G505/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG005 | G405/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG006 | G355/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG007 | G303/40/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG008 | G253/40/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG009 | G385/30/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG0010 | G404/40/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG0011 | G254/40/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
| TMISG0012 | G325/40/100 | 1050MM*6000MM | 175mm-1050mm | 300mm-6000mm |
Steel Bar Grating Application
Widely used on walkways, platforms, stairs, fences for mining industry, power plants, Petrochemical industry, machinery, light industry, railways, bridges, docks, schools, water plants, sewage treatment plants, etc.
Steel Bar Grating Characteristics
Hot Dip Galvanized Industrial Steel Grating has do the hot dip galvanized dispose,the galvanized thickness is 85um-100um,it is Anti-rust and corrosion,and can Increase service life,as usual can used more than 20years.
Steel Bar Grating Picture:
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Hot Dip Galvanized Steel Bar Grating Images
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