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ISO9001:2015 Steel Stair Treads Grating Made By Steel Bar Grating
Product Name:Steel Stair Treads Grating
Steel Stair Treads Grating Details:Stair Streads made by many various types to any length and width,which are also available in either
serrated or smooth grating
Developed a new type of steel grating stair tread in accordance with our client's project specifications.
Stair Treads have bolted end plates measuring 65*5mm or 83mm*5mm and yellow abrasive nosing measuring 30mm*70mm*3mm
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.
Steel Stair Treads Grating Specification:
| T1 | Without Nosing, Welding fixing |
| T2 | Without Nosing, Bolted fixing |
| T3 | Checkered Plate Nosing, Welding fixing |
| T4 | Checkered Plate Nosing, Bolted fixing |
| Item | Recommended maximum stair treads length (mm) | ||
| Bearing bar dimension mm | 25*3 | 25*5 | 32*5 |
| Bearing bar's pitch at 30 mm | 550 | 900 | 1300 |
| Bearing bar's pitch at 40 mm | 450 | 750 | 1200 |
| Item | Recommended stair treads width (mm) | ||||||
| T1/T2/T3/T4 Bearing bar pitch at 30mm | 95 | 125 | 155 | 185 | 215 | 245 | 275 |
| T1/T2 Bearing bar pitch at 40mm T3/T4 | 125 | 165 | 205 | 245 | 285 | ||
| 115 | 155 | 195 | 235 | 275 | |||
| Fixing hole center(mm) | 45 | 75 | 100 | 150 | |||
How to order Grating:
Bearing Bar Size:tell me the bearing bar thickness and depth(space)and the cross rods center to center
Bearing Bar Type :Bearing bar surface Serrated or Smooth
Stair Stead Type:the stair stead type:T1 T2 T3 T4
Stair Stead Size:Type size (width and Length )
Material:Steel,Stainless Steel,Or Aluminum
Package:Pallet
Surface Treatment:Mill,Black Paint,Or Galvanized
Steel Stair Treads Grating Picture:
