Engineered Portfolio
Certified Municipal & Highway Pole Solutions
Precision-manufactured structural lighting assets engineered directly in our 100,000 m² automated facility for worldwide infrastructure tenders.
Market Dynamics & Structural Science
Global Commercial Landscape: The 7-Meter Octagonal Pole Standard
Across international arterial roads, collector streets, and industrial corridors, the 7-meter (23-foot) octagonal steel pole represents the structural inflection point balancing optimal photometric distribution, wind-drag minimization, and cost-effective raw material yield.
Aerodynamic Vortex Shedding
Unlike cylindrical poles prone to destructive Von Kármán vortex resonance, the multi-faceted octagonal geometry (8 edges) introduces controlled boundary-layer turbulence. This design dramatically minimizes crosswind oscillation, lowering critical fatigue stress on top-mounted luminaires and solar PV brackets.
Structural Rigidity & Mass Ratio
Fabricated through CNC press-brake cold-forming from single-sheet Q235B/Q355B low-alloy steel, the octagonal cross-section yields a higher section modulus (Z) per kilogram of steel compared to traditional round poles. This structural geometry allows for leaner nominal wall thicknesses (3.0mm to 4.0mm) without compromising bending moment resistance.
Global Photometric Conformity
In accordance with CIE 115 and IESNA RP-8 street lighting recommendations, a 7m mounting height delivers the ideal cut-off luminaire distribution for two-lane (7m-8m width) roadways. It prevents disability glare (TI < 10%) while achieving high overall uniformity (Uo ≥ 0.40) at standard spacing intervals of 25m to 35m.
| Nominal Height | Top / Base Across Flats (A/F) | Wall Thickness | Flange Base Plate | Anchor Bolts (PCD) | Design Wind Velocity | Applicable Standard |
|---|---|---|---|---|---|---|
| 7.0 Meters (Single Section) | 65 mm / 130 mm | 3.0 mm (Q235B) | 260 x 260 x 12 mm | 4 x M18 x 500 mm (PCD 200) | Up to 140 km/h (38.8 m/s) | EN 40-3 / BS 5649 |
| 7.0 Meters (Heavy Duty Solar) | 70 mm / 145 mm | 3.5 mm (Q235B) | 280 x 280 x 14 mm | 4 x M20 x 600 mm (PCD 220) | Up to 160 km/h (44.4 m/s) | AASHTO LTS-6 / EN 40 |
| 7.0 Meters (Typhoon / High-Wind) | 75 mm / 155 mm | 4.0 mm (Q355B) | 300 x 300 x 16 mm | 4 x M22 x 700 mm (PCD 240) | Up to 200 km/h (55.5 m/s) | ASTM A595 Grade A / AS 4676 |
Manufacturing Supremacy
Automated Efficiency & Supply Chain Velocity
Operating from Gaoyou, Jiangsu—the global epicenter of street lighting infrastructure—Yangzhou Xintong integrates automated steel processing, robotics welding, and metallurgical protection under one roof.
100,000m²
State-of-Art Facility
25+ Years
Established Since 1999
500,000+
Poles Commissioned
80+
Countries Exported
Single-Seam CNC Hydraulic Forming
Our facility houses 14-meter 1200-ton tandem CNC hydraulic press brakes. An entire 7-meter pole shaft is formed from a single trapezoidal steel plate in one setup, eliminating circumferential transverse welds and drastically reducing stress concentrations along the shaft body.
Automated Submerged Arc Welding
Longitudinal seams undergo automated Submerged Arc Welding (SAW) with tracking sensors, providing 100% full-penetration welding without porosity or slag entrapment. Ultrasonic and magnetic particle non-destructive testing (NDT) are performed in-house in strict accordance with AWS D1.1.
Full-Immersion Hot-Dip Galvanization
Equipped with internal hot-dip galvanizing baths operating at 450°C, all poles conform to ASTM A123 / ISO 1461. A uniform zinc coating layer (minimum 86 microns / 610 g/m²) metallurgically bonds internally and externally, guaranteeing over 25 years of corrosion-free exterior performance.
Field Deployments
Localized Application Scenarios for 7M Octagonal Poles
Engineered flexibility allows the 7-meter octagonal configuration to be seamlessly adapted across varying environmental, functional, and urban infrastructure landscapes.
Off-Grid Solar Integration
Equipped with reinforced structural gussets at the base and top tenon adaptations for heavy PV arrays (150W-300W monocrystalline panels) and lithium battery brackets, serving off-grid highway sectors across the Middle East, Africa, and Latin America.
Smart Urban Arterials
Internal compartment design accommodating IP65 flush service inspection doors, grounding terminals, circuit breakers, and internal routing for IoT smart gateways, environmental sensors, 4G/5G micro-cells, and high-definition PTZ traffic surveillance cameras.
Industrial Estates & Logistics Hubs
Configured with heavy-duty single or twin luminaire cantilever brackets (0.5m - 1.5m outreach) delivering wide beam-spread roadway lighting for round-the-clock distribution centers, seaport access routes, container staging zones, and heavy freight terminals.
Municipal Subdivisions & Parks
Architectural electrostatic polyester powder coating over the galvanized substrate (Duplex System) in specified RAL colors (RAL 7016, RAL 9005, RAL 7024). Provides high UV gloss retention, resistance to de-icing salts, and aesthetic integration into residential neighborhoods.
Procurement Intelligence
Global Tender Trends & EPC Sourcing Strategies
International tender committees (FIDIC contracts, World Bank development loans, and National Highway Authorities) enforce rigorous mechanical and structural governance. Here is how modern procurement managers audit manufacturers.
Raw Material Metallurgical Traceability
Tier-1 EPC tenders require mill test certificates (EN 10204 Type 3.1) proving yield strength (≥ 235 N/mm² for Q235B; ≥ 355 N/mm² for Q355B), elongation (≥ 26%), and chemical composition limits (low silicon and phosphorus control) essential to prevent brittle galvanizing sand-pitting.
Standardized DIALux & Finite Element Calculations
Procurement teams demand certified structural calculation reports verified by Finite Element Analysis (FEA). This confirms that deflection at the pole top under gust factors does not exceed standard tolerances (< 2.5% of total height) while supporting luminaires, brackets, and wind surface areas.
Container Nesting & Packaging Optimization
For overseas projects, shipping costs significantly affect overall tender profitability. Because the 7m octagonal pole features a consistent continuous taper (approx. 11mm/meter to 14mm/meter), our factory utilizes precision wooden cribbing and automated nested loading, allowing up to 120-150 complete shafts per 40ft High Cube container.
Technical Support
Frequently Asked Engineering & Procurement Questions
Direct answers to the most common technical, compliance, and customization inquiries posed by structural consultants, municipal buyers, and international contractors.
Why choose an 8-sided octagonal pole rather than a conical or circular profile for 7-meter heights?
The 8-sided polygonal geometry breaks laminar wind flow, reducing vortex-induced vibrations that lead to metal fatigue. Mechanically, the press-braked edges act as structural longitudinal stiffeners along the entire 7-meter section, enabling superior load-bearing capacity and deflection resistance at equal or lighter steel wall thicknesses.
How does Xintong guarantee the durability of the hot-dip galvanized coating in coastal or high-salinity zones?
We follow strict ASTM A123 / ISO 1461 hot-dip galvanizing standards with multi-stage acid pickling, fluxing, and immersion in 99.99% pure zinc molten baths. For marine environments (C4/C5 corrosion classes), we apply an optional Duplex Coating: a shot-blasted hot-dip galvanized substrate followed by an electrostatic architectural polyester powder coating (70-100 microns), providing proven resistance to salt-spray testing beyond 1,500 hours.
Can the base plate, bolt circle diameter (PCD), and bracket geometry be customized for existing concrete foundations?
Yes. As a dedicated OEM/ODM manufacturer, our engineering team tailors the flange base dimensions (square, circular, or slotted), bolt-hole diameters, PCD, top tenon adapters (60mm, 76mm, or custom), and outreach arm profiles (single, double, or decorative) to match your existing foundation drawings and site conditions.
What documentation and compliance reports are supplied with each export shipment?
Every shipment includes a comprehensive tender-ready documentation package: EN 10204 Type 3.1 Raw Material Mill Test Certificates, Galvanization Coating Thickness Reports, Ultrasonic/Visual Welding Inspection Records, Dimensional Compliance Sheets, and certified structural calculation sheets indicating compliance with EN 40 / AASHTO standards.
What is the standard production lead time for utility-scale orders (e.g., 500 to 2,000 units)?
With 7 integrated production lines spanning cutting, tandem hydraulic bending, automatic SAW welding, and galvanization, our typical throughput for 7-meter octagonal poles exceeds 500 units per week. A volume order of 1,000 poles is typically fabricated and fully prepared for dispatch within 15 to 22 business days following shop drawing confirmation.
Project Catalogue
High Mast, Solar & Distribution Series
Explore our full line of infrastructure equipment engineered for municipal transport, electrical utility distribution, and high-lumen area illumination.
