Hot DIP Galvanized Steel Stair Treads with 25 x 3 to 100 x 8 Bearing Bar and ANSI/NAAMM Standard for Step Ladders
Basic Properties
Brand Name:
Gnee
Trading Properties
Minimum Order Quantity:
2PCS
Supply Ability:
300000 Square Meter/Square Meters per Month
Product Summary
Hot DIP Galvanized Steel Stair Treads for Step Ladders Bearing Bar Specifications Plain & Serrated Type: 25 x 3 mm to 100 x 8 mm I-Section Type: 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 mm Bearing Bar Pitch ...
Product Details
Highlight:
Hot DIP Galvanized Steel Stair Treads
,25 x 3 to 100 x 8 Bearing Bar Steel Stair Treads
,ANSI/NAAMM Standard Galvanized Steel Grating
Product Description
Hot DIP Galvanized Steel Stair Treads for Step Ladders
Bearing Bar Specifications
- Plain & Serrated Type: 25 x 3 mm to 100 x 8 mm
- I-Section Type: 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 mm
Bearing Bar Pitch (Center to Center)
- Standard Pitches: 12.5, 25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm
- Recommended: 30, 40, 60 mm
- American Standards: 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)
- Custom specifications available upon request
Material Options
- Mild Steel (Low Carbon Steel)
- Stainless Steel
Surface Treatment
- Untreated
- Painting
- Hot DIP Galvanizing
International Standards Compliance
- China: YB/T4001-1998
- USA: ANSI/NAAMM (MBG531-88)
- UK: BS4592-1987
- Australia: AS1657-1985
- Japan: JJS
Steel Stair Treads Technical Specifications
Standard Grating Specifications
| Pitch of Bearing Bar | Cross-bar Pitch | 25×5 | 32×5 | 40×5 | 45×5 | 50×5 | 55×5 | 60×5 |
|---|---|---|---|---|---|---|---|---|
| 30 | 100 | G255/30/100 | G325/30/100 | G405/30/100 | G455/30/100 | G505/30/100 | G555/30/100 | G605/30/100 |
| 50 | G255/30/50 | G325/30/50 | G405/30/50 | G455/30/50 | G505/30/50 | G555/30/50 | G605/30/50 | |
| 40 | 100 | G255/40/100 | G325/40/100 | G405/40/100 | G455/40/100 | G505/40/100 | G555/40/100 | G605/40/100 |
| 50 | G255/40/50 | G325/40/50 | G405/40/50 | G455/40/50 | G505/40/50 | G555/40/50 | G605/40/50 | |
| 60 | 50 | G255/60/50 | G325/60/50 | G405/60/50 | G455/60/50 | G505/60/50 | G555/60/50 | G605/60/50 |
Maximum Stair Tread Lengths
| Steel Grating Specification | 25×3 mm | 25×5 mm | 32×5 mm |
|---|---|---|---|
| Bearing Bar Pitch 30mm | 550 mm | 900 mm | 1300 mm |
| Bearing Bar Pitch 40mm | 450 mm | 750 mm | 1200 mm |
Product Images
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