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Hebei Qijie Wire Mesh MFG Co., Ltd
Hebei Qijie Wire Mesh MFG Co., Ltd
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Flooring Hot Dip Serrated Galvanized Steel Grating Stair Tread Long Life

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Flooring Hot Dip Serrated Galvanized Steel Grating Stair Tread Long Life

Brand Name : XMESH
Model Number : QJ-711
Certification : SGS
Place of Origin : Hebei, China
MOQ : 200pcs
Payment Terms : 30%TT in advance, Balance Before loading
Supply Ability : 5000 pcs one month
Delivery Time : 15-25days
Packaging Details : Steel palletized
Material : Mild steel sheet
Pitch : 40 x 100 mm
Type : 25 x 3.0 mm
Surface finish : Galvanized
Surface : Serrated
Size : 1.8 x 6.0 m
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Steel Grating, Flooring Grating, Hot Dip Galvanized Steel Grating, Stair Tread.​

Description:Steel Bar Gratings are manufactured with the world’s first-class computer-controlled pressure resistance welding machine by electro-forging the twisted square-steel into flat steel.Steel Bar Gratings are classified into three styles,namely plain style,serrated and I style as per the upper edges of bearing bars .More than 200 varieties are available based on specifications and spacing of bearing bars ,and that of cross roda.Different protective treatment can be made on the surface as environment varies.

1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10; 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, 15, 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. >

3) Cross Bar Pitch (center to center):
38.1, 40, 50, 60, 76, 80, 90, 100, 101.6, 102, 135mm and so on

4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel

5) Surface Treatment:
Untreated, Painting or Hot DIP Galvanizing

6) 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.


welded bar grating

  • Specifications of serrated welded steel grating

  • Materials: low carbon steel, stainless steel.
  • Surface treatment: galvanized, powder coating, painted color.
  • Height of bearing bar: 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm.
  • Thickness of bearing bar: 2 mm, 3 mm, 4 mm, 5 mm.
  • Mesh size: 34 mm × 38 mm
  • Packaging:Strap packing.
  • Pallet packing.
    Screw rod fixation.
    Features of serrated welded steel grating

TOP SURFACE
Typically supplied with a plain surface. On our most popular products a Serrated surface (S) is also available. Please refer to the loading charts in this section of the catalogue to see which Mild Steel grating types are available with a Serrated surface.


Learn Steel Grating

Specification of Steel Grating
No.Item

Description


1Bearing 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


2Bearing 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.


3Twisted Cross Bar Pitch

38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc


4Material Grade

ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400,

Mild steel & Low carbon steel, etc


5Surface Treatment

Black, self colour, hot dip galvanized, painted, spray coating


6Grating Style

Plain / Smooth, Serrated /teeth, I bar, serrated I bar


7Standard

China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88),

UK: BS4592-1987, Australia: AS1657-1985,

Function of heavy-duty steel grating

drawing of steel grating

  • 1.Widely used in shipbuilding, harbor, oceanographic engineering, building, paper mills, cement plant, medicine, spinning and weaving.
  • 2.It Is applied in food stuff factory, transportation, municipal administration, parking lot , etc.
  • 3. Also used by various plants such as electric power, petroleum,chemical industry.

High strength and high bearing capacity:

  • Non-slip, anti-corrosion, not easy to deform.
  • High safety performance.
  • Do not accumulate rain, snow and dust.
  • Simple and beautiful appearance.
  • Easy to install and remove to extend the lifespan.
  • Applications of serrated welded steel grating
  • Serrated welded steel grating is widely used as platforms, stair treads, walkaways and floors in industrial, civil and commercial buildings.

Feature Advantage

  • 1. Anti-corrosive, resisting to acid and alkali
  • 2. Light weight, great load-bearing capacity, on-slip and safe, easy installation
  • 3. Being economical of materials, being sturdy and durable, ventilation
  • 4. Easy to clean and attractive appearance.

Steel grating standard:


CountrySteel grating standardSteel material standardHot galvanizing standard
ChinaYB/T4001-1998GB 700-88GB/T13912-2002
USAANSI/NAAMM(MBG531-88)ASTM (A36)ASTM(A123)
EnglandBS4592-1987BS4360 ( 43A)BS729
AustraliaAS1657-1992AS3679AS1650

Type of Steel Grating

Comparison of Feature:

plain steel grating
Plain:One of the most widely used grating, available for flooring, sidewalk, dranage pit cover, stair tread, etc.

serrated steel grating
Serrated:Better non-skid property & safety comparing to plain grating

I shape steel grating
I-shape:Lighter, more economical and practical comparing to plain grating.


Process of steel grating:

process of steel grating

Manufacturing Tolerance of the Gratings

There is no maximum allowable tolerance for every dimension given here.
tolerance of steel grating

tolerance of steel grating

tolerance of steel grating tolerance of steel grating


process of steel grating

steel gratingsteel grating
steel gratingsteel grating


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