30ft 3mm NEA galvanized electrical power pole for overheadline project
Mechanical Property
The metal supports are designed to withstand the nominal force F and the pressure of the wind V applied at 0.25m from the top. Under these loads, the safety factor with respect to the elastic limit of the steel is larger than 1.8. The post also resists a torque equal to (F+V) ×1m. Tests shows the load intervened when breaking is around 2 times of design load.
Galvanization
Standard: NFA91121
Average thickness of the galvanization: Not less than 70
Manufacturer Tolerance
- Component Length: -25mm to 75mm
- Straightness: 2mm/m
- Twisting degree: 1̊ per 3 meters length
- Ovalisation : Maximum is 3%
- The average diameter : +/-0.5%
-Slip length: +/-150mm
Standard Accessory
- Top plate
- Base plate
- Bottom Strip
- Standard Hole
- Climbing Rung
- Anchor bolt
- Bitumen Protection
- Painted Marking
- Removable Ladder
The information to inquiry or purchase
- Steel pole height and force
- Cross arm type and length, the position to install in the steel pole
- The method to fix the cross arm (use Bolt to connect or use one or two template to weld in the steel pole to install the cross arm)
- Safety factor of the steel pole
- Wind speed
- Type of climbing rung
- Destination port
- Others
