58FT ASTM A572 Grade 50 Galvanized Electric Steel Pole with 1000KGF Design Load for 66KV Transmission

Yixing Hongxin Illumination Facilities Co., Ltd. presents the 58FT ASTM A572 Grade 50 octagonal galvanized electric steel pole, rated at 1000KGF for 33KV-66KV transmission and heavy-duty utility applications. This pole utilizes ASTM A572 Grade 50 high-strength low-alloy structural steel, offering a minimum yield strength of 345 MPa (50 ksi) with enhanced atmospheric corrosion resistance compared to standard A36 material.

The A572 specification is widely mandated by North American and international utility procurement standards for transmission-class structures, making this pole directly compatible with projects funded by development banks and international aid programs requiring ASTM compliance. Hongxin's 25+ years of manufacturing experience ensures full conformance to A572 material traceability requirements, from certified mill production through finished pole delivery.

• ASTM A572 Grade 50 Steel: Meets rigorous international procurement specifications for utility transmission structures. The controlled chemistry and fine-grain microstructure provide superior toughness at low temperatures, critical for projects in cold-climate regions.
• 1000KGF Design Load: Engineered for 66KV transmission lines, heavy-angle suspension positions, and terminal dead-end structures where maximum mechanical capacity per pole is essential for line reliability.
• Three-Section Flange Assembly: Precision-machined flange connections with Grade 8.8 galvanized bolts provide rigid, inspectable joints that maintain structural continuity under combined bending, torsion, and axial loading.
• Complete Material Certification: Full ASTM A572 material test reports including chemical composition, tensile strength, yield strength, elongation, and Charpy V-notch impact values accompany every shipment.
• Seismic Zone Qualification: Base plate and anchor bolt design incorporates ductile yielding mechanisms that provide energy dissipation capacity for high-seismic regions, validated through nonlinear structural analysis.
• Integrated Grounding System: Factory-welded grounding pads at base and mid-height positions with stainless steel hardware provide reliable earthing connections for lightning protection and fault current dissipation.

The 58FT ASTM A572 transmission pole is purpose-built for 66KV transmission corridors, grid interconnection tie-lines, and primary substation entry structures. Its ASTM material certification makes it directly acceptable for World Bank, Asian Development Bank, and African Development Bank funded electrification projects.

The pole supports all standard 66KV hardware including composite long-rod insulators, vertical break disconnect switches, and OPGW attachment brackets. Custom structural analysis for line angles up to 60 degrees, broken wire conditions, and construction/maintenance loading cases is available through Hongxin's engineering department.

Three-section pole sets are individually wrapped, flange faces protected, and packed in heavy-duty steel-framed crates for ocean freight. Complete ASTM A572 material certification package, flange machining inspection records, robotic weld NDT reports, ISO 1461 galvanization measurements, and final assembly verification are provided.

Third-party inspection welcomed. Standard 12-month warranty. Minimum order: 10 pieces. Delivery: 35-45 days.