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48FT Double Circuit Galvanized Electric Steel Pole with 800KGF Load Rating for 33KV Transmission Lines
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Detail Information |
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| Highlight: | 48FT double circuit electric pole,octagonal galvanized steel pole,800KGF dual circuit 33KV pole |
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Product Description
48FT Double Circuit Octagonal Galvanized Electric Steel Pole 800KGF for 33KV Dual Circuit Lines
Yixing Hongxin Illumination Facilities Co., Ltd. introduces the 48FT double-circuit octagonal galvanized electric steel pole, rated at 800KGF for 33KV sub-transmission corridors requiring dual-circuit capacity on a single pole structure. This pole supports two independent three-phase circuits on opposite sides of the cross-arm assembly, effectively doubling the power transfer capacity of a single right-of-way corridor without the cost and land acquisition of twin pole lines.
The octagonal profile delivers the torsional rigidity necessary to resist the combined bending moments from two sets of tensioned conductors. Manufactured in Hongxin's integrated production facility with 25+ years of specialized utility pole experience, each pole undergoes full-process quality control from Q345B steel receipt through robotic welding, hot-dip galvanization, and final dimensional verification.
Key Features
- Double-Circuit Configuration: Supports two independent three-phase circuits on a single pole, maximizing power throughput per right-of-way meter. Ideal for urban corridors, substation approaches, and transmission line upgrades where land acquisition is cost-prohibitive.
- 800KGF Combined Load Rating: Engineered to handle the combined mechanical demands of dual-circuit conductor tension, wind loading, and ice accumulation, with structural analysis validated against ASCE 48 and IEC 60826 loading cases.
- Extended Cross-Arm Mounting: Wide cross-arm attachment zones with reinforced mounting points accommodate dual sets of insulators and hardware, with factory-drilled hole patterns aligned to utility standard phase spacing requirements.
- Dual-Circuit Grounding System: Integrated grounding lug positions on both circuit sides ensure independent earth paths, preventing fault propagation between circuits and improving overall system reliability.
- Elevated Phase Clearance: Pole geometry optimized for 33KV phase-to-phase and phase-to-ground clearances under maximum sag conditions, verified through catenary analysis at rated ampacity conductor temperatures.
- Seismic Design Consideration: Base plate and anchor bolt configuration designed with ductile failure modes, providing post-elastic deformation capacity for seismic zones without catastrophic pole collapse.
Technical Specifications
| Parameter | Specification |
|---|---|
| Height | 48FT (14.63 meters) |
| Material | Q345B (ASTM A36 / S355JR equivalent) |
| Shape | Octagonal (8-sided) tapered |
| Wall Thickness | 4.0mm - 6.0mm |
| Design Load | 800KGF (combined dual-circuit) |
| Circuit Configuration | Double-circuit (2 x 3-phase) |
| Surface Treatment | Hot-dip galvanization, ISO 1461 |
| Connection Type | Flange connection (2 sections) |
| Zinc Coating Thickness | ≥ 85μm average |
| Applicable Voltage | 33KV (per circuit) |
| Conductor Size Range | ACSR 150mm² - 300mm² |
| Phase Spacing | Per utility standard |
Applications
This 48FT double-circuit pole is the optimal solution for urban 33KV distribution corridors where right-of-way width is constrained by existing buildings, roads, or environmental buffers. By carrying two circuits on one pole line, utilities can double capacity without requiring additional land acquisition or easement expansion.
Typical applications include urban ring-main feeders, industrial park supply lines, substation interconnection lines, and capacity upgrades to existing single-circuit corridors. The pole is compatible with standard double-circuit cross-arm assemblies, fiber optic ground wire (OPGW) attachment points, and aerial bundled conductor (ABC) configurations. Custom engineering support is available for site-specific loading cases including asymmetric circuit loading, conductor ice shedding, and broken-wire conditions.
Packaging & Quality Assurance
Poles are individually wrapped, matched flange pairs are protected with anti-corrosion treatment, and all components are secured in steel-framed timber crates designed for containerized ocean freight.
Each shipment includes: Q345B mill certificates, flange machining inspection reports, robotic weld NDT records, galvanization coating thickness measurements, and dimensional conformance reports. Pre-shipment inspection by third-party agencies is welcomed. Standard warranty: 12 months manufacturing defect coverage. Minimum order: 10 pieces. Standard delivery: 30-40 days.
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