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Flat Stair Gully Galvanized Serrated Grating 30 X 4mm With 6X6 Or 8X8mm Bar

HE BEI SHANG SHUN WIRE MESH PRODUCTS CO.,LTD .
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Address: heng shui city ,an ping county

Contact name:James Sun

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HE BEI SHANG SHUN WIRE MESH PRODUCTS CO.,LTD .

Flat Stair Gully Galvanized Serrated Grating 30 X 4mm With 6X6 Or 8X8mm Bar

Country/Region china
Categories Metal Building Materials
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Product Details

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 properties. The hot dipped zinc coating gives the product excellent anti-corrosion.

Material: high quality low carbon steel

Types: serrated and plain

Finishes: electro galv, hot dipped galv, according to the difference surface treatment.

Specification

MatrialLow carbonsteel / Stainless steel
GradeCN: Q235, Q345 ; UK: 43A
Bearing bar size20X5, 25X3, 25X4, 25X5, 30X3, 30X4, 30X5, 32X3, 32X5, 40X5, 50X4... 75X8, 100X8mm, etc
Bearing bar pitch20,25,30,32.5,34.3,40,50,60,62,65mm
Bearing bar typeplain, Serrated (tooth-like), I bar (I section), Serrated-I
Cross bar size5X5, 6X6, 8X8mm (twisted bar)/5, 6, 8mm ( round bar)
Cross bar pitch40, 50, 60, 65, 76, 100, 101.6, 120, 130mm, etc.
panel size:1000x1000mm, 1000x2000mm, 1000x3000mm, 1000x6000mm
Surface treatmentUntreated, hot DIP galvanized, cold DIP galvanized, painted, powder coated, pickling, electrolytic polishing, or as customers’ requirement.

Most Popolar

 

NO.Bearing size(mm)Cross bar pitch(mm)Weight(kg/square meter)
G253/30/50

 

25x3

5025.7
G253/30/10010022.8
G255/30/50

 

25x5

5039
G255/30/10010036.2
G323/30/50

 

32x3

5031.3
G323/30/10010028.4
G325/30/50

 

32x5

5048.4
G325/30/10010045.5

 

Surface treatment: untreated(black), hot-dipped galvanized ,powder coated, electroplate,

painting or as per customers’ requirement.

 

Specification of galvanized steel grating:

Common specification of Steel grating
Material Standard

ASTM A36, A1011, A569, Q235, S275JR,Stainless steel 304,

Mild steel & Low carbon steel, etc

Bearing Bar

(width*thickness)

25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10…..100 x10mm 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 Pitch38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc
Surface treatment

untreated(black), hot-dipped galvanized ,powder coated,

electroplate, painting or as per customers’ requirement.

Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar
Application

galvanized steel grating are widely used by various plants such as electric power,petroleum,chemical industry,metallurgy industry,machinery industry,shipbuilding, harbor,oceanographic engineering,building,paper mills,cement plant,medicine,spinning and weaving,foodstuff factory,transportation,municipal administration,parking lot,etc.

Standards of serrated galvanized steel grating.

 Steel grating standardSteel standardGalvanizing standard
China standardYB/T 4001.1-2007GB700-88GB/T13912-2002
USA standardANSI/NAAMM(MBG531)ASTM(A36)ASTM(A123)
U.K. standardBS4592BS4360(43A)BS729
Australia standardAS1657AS3679AS1650

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Tolerance of hot dip galvanized steel grating

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.

Packaging and shipping of steel grating

Steel grating ready to delivery. Stock place of our factory.

Inspection process of the steel grating.

To make sure the goods is seriously as customer's request, we have professional inspector who check the steel grating quality in each step from material collecting to goods loading.

 

 

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