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Dovetail Pressure Locked gratingmanufacturehigh quality reasonable price
Type: Plain,Serrated,I-BAR
Surface:HDGalvanizing,
Dovetail Pressure Locked grating assembled by inserting pre-punched bearing and cross bars into an "eggcrate" configuration and deforming the cross bars under intense hydraulic pressure. Available in all materials and ideal for many architectural and ornamental applications.
Stair tread with checkered plate nosing ,bolted fixing is made from the steel grating (plain style,serrated style and I bar type) and to any dimensions to suit the relevant stairway. Our stair treads have 8 types, they are:
1: Stair Tread without Nosing, Welding fixing
2: Stair Tread without Nosing, Bolted fixing
3: Stair Tread with Checkered Plate Nosing, Welding Fixing
4: Stair Tread with Checkered Plate Nosing, Bolted fixing
5: Stair Tread with Vertical Striped Plate Nosing, Welding fixing
6: Stair Tread with Vertical Striped Plate Nosing, Bolted fixing
7: Stair Tread with Perforated Plate Nosing, Welding fixing
8: Stair Tread with Perforated Plate Nosing, Bolted fixing
composite stair tread specifications:
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,
3) Cross Bar Pitch (center to center):
38, 50, 76, 100, 101.6mm etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available.
4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel
5) Surface Treatment:
Untreated, Painting or Hot dip Galvanizing
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