STEEL GRATING STAIR TREAD:
1. Production process:
Steel grating stair treads is made by bearing bar and cross bar according to the flat-steel weft arrangement, in high-pressure spacing on resistance welder welded by cutting, incision, opening, overlock process such as processing and into customer requirements finished products.
2. Features:
High intensity, light structure, strong grid bonding structure makes it with high load, the structure characteristics, facilitate hoisting light; Beautiful appearance, durable: Hot-DIP galvanized surface treatment make it fairly good corrosion resistance, the surface luster beautiful; Ventilation, lighting, heat dissipation, explosion-proof, prevent slippery properties is good; Deposition prevention dirt.
3. Usage:
Widely used in petroleum chemical industry, power plant, water and sewage treatment plants, municipal engineering, environmental sanitation engineering fields of the platform, footpath, zhanqiao pier, ditch lid, manhole cover, ladders, fences, guardrail etc.
4. Material: Carbon steel or stainless steel
5. Surface Treatment: Hot-dipped galvanized, PVC coated, electro galvanized, plain and so on.
6. Size: Standard or non-standard, making as the customers drawings.
7. Packing: Naked or packing as the customers request.
| 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 |
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