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Stainless Steel Carbon Steel Serrated Bar Grating Stair Treads For Construction Oil Refinery Sewage Surface Bearing

Categories Steel Grate Mesh
Brand Name: SS
Certification: SGS
Place of Origin: CHINA
MOQ: 10 pcs
Payment Terms: L/C, T/T, Western Union
Supply Ability: 1000 pcs/week
Delivery Time: 10-15days after confirming the order
Packaging Details: steel pallets with steel band bundles
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
certificated: SGS
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    Stainless Steel Carbon Steel Serrated Bar Grating Stair Treads For Construction Oil Refinery Sewage Surface Bearing

    Raw material:


    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.

    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

    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)
    P- Painted
    U- untreated

    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
    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

    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 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

    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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