Industrial Enjineering Building Materials Galvanized Serrated Grating Safety Steel Grid
Steel Grating is made by the world first-class Italian ORSOGRIL 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 welding which is controlled by computer. So we can produce high quality grating with firm welding,smooth surface and high strength.
HOT GALVANIZING
Normally,Hot galvanizing will be carried out after end welding process,For the thickness of bearing bars is not less than 5mm,the weight of average Zinc Layer will not be less than 610g/m2.When the thickness of bearing bars is less than 5mm,the weight of average Zinc Layer
Will not be less than 460g/m2. The quality and requirements after hot galvanizing are subject to the standards of GB/T 13912.
CALCULATION OF WEIGHT AND AREA
1. The weight of gratings varies after end welded and hot galvanizing process. For normal industrial platform using 30mm pitch bearing bars,the weight will increase 12%;14% for 40mm pitch bearing bars and 16% for 60mm pitch bearing bars.
2. For those gratings processed according to the size supplied by customer,calculation will based on the actual area(including cutout and tap)
3. For those gratings processed according to customer’s drawing,calculation will be based on the
total outside size(including cutout and tap)
4. For unusual size of grating cutouts shall not deduct from the length and width.
Description:
(1) Structure: Welding with flat steel and cross/round bars with certain distances.
(2) Features: High strength, light structure, high bearing.
(3) Surface: The hot dipped zinc coating gives the product excellent anti-corrosion.
| 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 Pitch | 38.1, 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 Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar |
| Packing | 1) LCL(less than one container load): packed with plastic film then on the pallets 2) FCL(full container load): nude packing 3) Other special package :according to customers' requirements. |
| Payment Term | T/T,L/C, Paypal, Western Union, MoneyGram, Credit Card ,D/A,D/P, Trade assurance |
Before our quotation, the following infos are required:
* Grating typr & size(bearing bar size, bearing bar spacing, cross bar size, cross bar spacing).
* Grating top surface: plain or serrated
* Span direction ( direction of bearing bar)
* Indication of the location & size of cut-outs and removable areas.
* Indication any banding, kick plate, or nosing requirement.
* Surface treatment: galvanized, painting or untreated.
* Specify the type & quantity of clips if required.
Industrial Steel Grating picture
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