Hot Dipped Galvanized Expanded Metal Mesh Drainage Steel Grating Stair Treads Customized
Hot dipped galvanized drainage steel grating stair treads customized
Steel grating in our company is made of high quality low carbon steel, stainless steel and alloy steel. It is produced by the ways of welded, press-locked, swage-locked or riveted. Steel grating is widely used in our daily life and industrial.
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
- Materials: low carbon steel, stainless steel.
- Surface treatment: galvanized, powder coating, painted color.
- Height of bearing bar: 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm.
- Thickness of bearing bar: 2 mm, 3 mm, 4 mm, 5 mm.
- Mesh size: 34 mm × 38 mm
- Packaging:Strap packing.
- 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
Steel Grating Common Size Table List:
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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 |
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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 |
Function of heavy-duty steel grating
- 1.Widely used in shipbuilding, harbor, oceanographic engineering, building, paper mills, cement plant, medicine, spinning and weaving.
- 2.It Is applied in food stuff factory, transportation, municipal administration, parking lot , etc.
- 3. Also used by various plants such as electric power, petroleum,chemical industry.
High strength and high bearing capacity:
- Non-slip, anti-corrosion, not easy to deform.
- High safety performance.
- Do not accumulate rain, snow and dust.
- Simple and beautiful appearance.
- Easy to install and remove to extend the lifespan.
- Applications of serrated welded steel grating
- Serrated welded steel grating is widely used as platforms, stair treads, walkaways and floors in industrial, civil and commercial buildings.
Feature Advantage
1).good anti-skipping, used in wet , slipping area, especially the sea oil platform
2).Hot-dipped galvanized,high anti-corrosion, 30years life time, can be used as channel cover with frame, anti-thief, safe and easy to open
3).High strength, and better than cast iron, can be used in wharf, airport and other long span and heavy loading environment.
4).Large hole for drainage, Water leakage area up to 83.3%, it is the best choice of forestair.
5).Good-looking : clean lines, silver appearance, modern idea, save material , save cost; when long span, heavy load, it is cheaper than cast iron.
The applications of steel grating:
- -Fencings for car-parks, buildings and roads; drainage trench covers and drainage pit covers for highways;
- -Flooring in various bridges such as railway bridge sidewalks, over-bridges across the street;
- -Rotation ways, channels, and platforms for pump rooms and engine rooms in various ships;
- -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:
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Process of steel grating:
Manufacturing Tolerance of the Gratings
There is no maximum allowable tolerance for every dimension given here.
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