Payment & Shipping Terms:
|Material:||Hot-dipped Galvanized||Bearing Bar Pitch:||20,25,30,32.5,34.3,40,50,60|
|Cross Bar Pitch:||40, 50, 60, 65, 76, 100, 101.6||Cross Bar Size:||5X5, 6X6, 8X8mm|
|Application:||Floor||Bearing Bar Thickness:||2.5mm-10mm|
|Length:||1m, 2m, 5.8m, 6m, Etc||Width:||900mm, 1000mm, Etc|
Raw material of bearing bars: Carbon steel, stainless steel, aluminum etc. with plain type, I type or serrated type.
Raw material of cross bars: Carbon steel or stainless steel in round bars, square bars, twisted square bars or hexagon bars.
Raw material of end bars: Same material as bearing bars.
|Matrial||Low carbonsteel / Stainless steel|
|Grade||CN: Q235, Q345 ; UK: 43A|
|Bearing bar size||20X5, 25X3, 25X4, 25X5, 30X3, 30X4, 30X5, 32X3, 32X5, 40X5, 50X4... 75X8, 100X8mm, etc|
|Bearing bar pitch||20,25,30,32.5,34.3,40,50,60,62,65mm|
|Bearing bar type||plain, Serrated (tooth-like), I bar (I section), Serrated-I|
|Cross bar size||5X5, 6X6, 8X8mm (twisted bar)/5, 6, 8mm ( round bar)|
|Cross bar pitch||40, 50, 60, 65, 76, 100, 101.6, 120, 130mm, etc.|
|panel size:||1000x1000mm, 1000x2000mm, 1000x3000mm, 1000x6000mm|
|Surface treatment||Untreated, hot DIP galvanized, cold DIP galvanized, painted, powder coated, pickling, electrolytic polishing, or as customers’ requirement.|
|NO.||Bearing size(mm)||Cross bar pitch(mm)||Weight(kg/square meter)|
Q235 or Stainless Steel
2.Sign of the shape of bearing bars.
F- Plain style
S- Serrated style
I- I-section style
3.Sign of surface treatment
G- Hot galvanizing (it is recommended)
Compound steel grating plate for Hot dipped galvanized steel grating for construction:
1.The compound steel grating plate consists of steel grating plate with certain loading ability and surface seal retreader.
2.After hot dip zinc treatment, the compound steel grating plate will warp and distort because of the heat, espacially the great model steel grating plate, difficult to smooth; please note the shaping.
3.The compound steel grating plate commonly takes series 3 steel grating plate as basic plate, also can use series 1 or series 2 steel grating plate. Retreader usually uses 3mm plate, also can uses 4mm, 5mm, 6mm plate.
Specification of galvanized steel grating:
|Common specification of Steel grating|
ASTM A36, A1011, A569, Q235, S275JR,Stainless steel 304,
Mild steel & Low carbon steel, etc
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|
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|
Specifications of steel grating
1>Material :Mild steel & Low carbon steel, etc.
2>Surface treatment: hot-dipped galvanized, electric galvanized.
1>Bearing bar shapes: plain or serrated or I bar type.
2>Bearing Bar Pitch (center to center): 30, 40, 60mm are recommended,but we can also do it under customer's request.
3>Bearing Bar (Load Bar) Specifications (mm):The specification(thickness of bearing bar)of plain type and serrated type is 20 x 3 to 100 x 10;
4>Cross bar pitch(mm) :38, 40, 50, 60, 76, 80, 100, 110, 120 etc.
Standards of serrated galvanized steel grating.
|Steel grating standard||Steel standard||Galvanizing standard|
|China standard||YB/T 4001.1-2007||GB700-88||GB/T13912-2002|
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.