1. Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 25 x 3 to 100 x 8; 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, 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. >
Mild Steel (Low Carbon Steel) or Stainless Steel
4. Surface Treatment:
Untreated, Painting or Hot DIP Galvanizing
5. 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
flooring steel gratings
Stanchions (hand rails)
|Countries||National Standards for Grating||Materials||Galvanizing Standards|
|China||YB/T 4001.1-2007||GB 700-88||GB/T13912-2002|
|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 Treatmen||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
Steel Grating Mesh is made by welding with flat steel and bars with certain distances. It goes through cutting, opening, edging and other processes. The products enjoy the feature of high strength, light structure, high bearing, convenience for loading and other propertier. The hot dipped zinc coating gives the product excellent anti-corrosion.
1) material:carbon steel or stainless steel
2) cross bar pitches:maybe 24-200mm,of which 50mm,76mm and 100mm .101.6mm are recommended.
3) Steel grating is made by the world first-class equipment,which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance.cross bar is pressed into the bearing bar by high tension resistance weldingring which is controlled by computer.so we can produce high quality gratings with firm welding,smooth surface and high strength.
4) Surface process of gratings: there are three types:hot-dipped galvanized ,electro-galvanized and spraying brushing and soaking.anti-acid and alkali corrosion capacity the range PH6 to PH12.5,a stable protective film will be formed on the zinc surface.it has good anti-corrosive property.
5) Packing conditions of steel grating:normally packed in pilling up ways with two pieces of square wood on both upperand bottom sides.
flooring steel gratings
Stanchions (hand rails)
|Bear Bar Type||Flat Bar, I-Bar, Serrated Bar, etc..|
|Bearing Bar Size||20x5mm, 25x3mm, 35x5mm, 40x5mm, 50x5mm, 60x5mm, etc..|
|Bearing Bar Spacing||20mm, 25mm, 30mm, 33mm, 40mm, 43mm or multiplier.|
|Cross Bar Type||Twisted Steel Rod, Flat Bar|
|Cross Bar Size||3mm, 4mm, 5mm ,6mm or thicker|
|Cross Bar Spacing||50mm or 100mm|
|Bearing Bar Length||Customerized from 1000mm to 6000mm or more|
|Cross Bar Length||Under 1200mm|
|Material Grade||Mild Steel(Q235B), Stainless Steel 304 or 316, etc.|
|Treatment Available||Hot dipped Galvanized, Anodized, Polished and Powder Coated|
Stair Treads are produced by steel gratings with surface to be hot galvanized or electrogalvanized. They are widely used as industrial platforms, aisle floors, railway bridge sideways, parking lots floors, etc.
(Steel gratings consist of a series of flat bars cross jointed by welding at various intervals with cross bars to form some kind of steel products with square lattice among them.)
The general metal stair treads are three kinds .1mild carbon stair treads ,its surface treatment is hot dip galvanized,the price is the lowest but value is better according to meterial cost & application .It canbe used in indoor & outdoor ;2aluminum stair treads ,the weight is lighter than mild caron stair treads.Its apperance is better , but the price is expensive than mild carbon .aluminum stair treads is more adjust indoor .3stainless stair treads ,the surface is so pretty ,it is anti -acid &anti -alkali corrosion capacity .it can be used outdoors.
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 to sliding and explosion.
6. Easy installation and disassembly.
|Thickness≥3mm, depth ≥19mm|
|19X3,19X5,20X3, 20X5, 25X3, 25X4, 25X4.5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….|
|Pitch of Load bearding flat bars(mm)||12.5,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80……|
|Pitch of cross bars(mm)||38.1, 50, 50.8, 70, 75, 80, 99,100, 101.6, 102……|
|load Bar Specification(Width×Thickness)|
Galvanized ASTM Q235 SS304 Stainless Steel Grating Steel Stair Treads
Stair treads are available fabricated to any size in type "WS" welded, type "DTS" dovetail pressure locked, or type "SLS" swage locked grating. Treads are manufactured with a defined visible nosing and pre-punched end carrier plates or angles, ready for bolting or welding to the stair stringers.
There’re three kinds of steel gratings, plain style grating, serrated steel grating and I bar steel grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We are professional factory to design and manufacture standard steel grating and customize according to client's requirements.
Material of grating treads
Steel, Mild Steel (Low Carbon Steel) or Stainless Steel, fiberglass
Surface Treatment of grating treads
Untreated, Painting or Hot dip Galvanizing
Specification list of grating treads
|Specification of stainless steel drainage grates ( width × thickness )|
Bearing Bar 32x5,25x5 Serrated Steel Grating Hot Dipped Galvanized
The application of steel grating walkway:
|SERRATED 1/8 X 1 X 24 X 240 BAR GRATING||196|
|SERRATED 3/16 X 1 1/2 X 36 X 240 BAR GRATING||618|
|SERRATED 3/16 X 1 1/4 X 24 X 240 BAR GRATING||348|
|SERRATED 3/16 X 1 1/4 X 36 X 240 BAR GRATING||522|
|SERRATED 3/16 X 1 1/4 X 36 X 288 BAR GRATING||626.38|
|SERRATED 3/16 X 1 X 24 X 240 BAR GRATING||284|
|SERRATED 3/16 X 1 X 24 X 288 BAR GRATING||340.75|
|SERRATED 3/16 X 1 X 36 X 18 BAR GRATING||32.38|
|SERRATED 3/16 X 1 X 36 X 240 BAR GRATING||426|
|SERRATED 3/16 X 1 X 36 X 288 BAR GRATING||511.19|
Contact Person: Mr.