Heavy-Duty Municipal & Highway Lighting Infrastructure
Explore our core certified series engineered in our 100,000 m² Gaoyou production base. Tender-ready with complete structural calculations, weld certifications, and DIALux simulations.
OEM PUBLIC TRANSIT Series Municipal High Mast Poles
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URBAN-GRID Series Steel Power Distribution Poles
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Custom XINTONG Full Series Municipal Poles
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Custom High-Strength Extreme Condition Poles
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OEM AIRPORT-PORT SERIES High Mast System
Product SpecificationsThe 9-Meter Single Arm Lighting Column: Global Engineering Archetype
Why the 9-meter (30 ft) single-arm configuration remains the global gold standard for dual-lane carriageways, secondary arterials, and modern smart logistics corridors.
In municipal highway and highway transportation design, the 9-meter single arm street light pole represents a finely calibrated intersection of optical geometry, aerodynamic resistance, and structural mechanics. As urban centers expand and logistics infrastructure links metropolitan fringe hubs, roadway lighting must achieve stringent uniformity thresholds (typically $U_0 \ge 0.40$ and $U_l \ge 0.70$ under CIE 115 and EN 13201 classes M2 to M4) while minimizing installation footprints and lifecycle maintenance overhead.
Structural Mass vs. Dynamic Deflection
A single arm creates an eccentric dead load combined with directional aerodynamic drag. Our structural designs implement tapered conical or octagonal sections with tapers ranging from 11 mm/m to 14 mm/m, ensuring top deflection remains within strict limits (< 1% under 160 km/h wind speeds) to prevent luminaire flicker and structural fatigue.
Cyber-Physical Convergence
Modern 9m poles no longer serve solely as light supports. Today's procurement specifications require internal dual-chamber raceways to isolate 400V/230V AC lines from low-voltage DC data bus cables, accommodating IoT nodes, environmental sensors, 5G microcell transceivers, and ANPR surveillance systems without signal cross-talk.
Continuous Single-Seam Fabrication
Unlike split or welded segmented poles that introduce heat-affected zone (HAZ) vulnerabilities, our 9-meter shafts are precision-formed from a single steel plate via CNC hydraulic tandem press brakes. The longitudinal weld is executed via submerged arc welding (SAW) without transverse butt joints, delivering superior torsional integrity.
China Factory 4.0: Industrial Scale, Traceability & Metallurgical Integrity
Inside our 100,000 m² Gaoyou industrial production base: How vertical integration safeguards tender delivery timelines, structural accuracy, and decades of corrosion protection.
Traceable Raw Steel Metallurgy
We source prime hot-rolled structural steel coils exclusively from premier domestic mills (Baosteel, Shougang) in certified Q235B, Q355B, and Q355D grades. Every batch is accompanied by EN 10204 3.1 Mill Test Certificates verifying tensile, yield, and Charpy impact properties.
1600-Ton CNC Tandem Press Brakes
Two synchronized 800-ton CNC press brakes spanning up to 14 meters ensure that conical, octagonal, or polygonal profiles achieve uniform bend radiuses down to $\pm 0.5\text{ mm}$ tolerance. Single-stroke cold forming prevents micro-cracking along bend apexes.
Robotic Submerged Arc Welding
Automated SAW lines deploy precision tracking sensors to deposit continuous, slag-free longitudinal welds. Base plates are welded both internally and externally with deep-penetration fillets inspected via Non-Destructive Testing (NDT / Ultrasonic Testing).
Full-Immersion Hot-Dip Galvanizing
Fabricated poles are degreased, acid-pickled, fluxed, and dipped into 99.995% pure molten zinc at $450^\circ\text{C}$. Internal and external surfaces achieve a minimum coating thickness of $86\,\mu\text{m}$ ($610\,\text{g/m}^2$) complying with ISO 1461 and ASTM A123.
9-Meter Single Arm Technical Specification Matrix
Comprehensive engineering benchmarks for procurement authorities, consulting engineers, and EPC contractors. All dimensions can be adapted to localized project wind speed zones and luminaire payloads.
| Engineering Parameter | Conical Tapered Standard | Octagonal High-Wind | Multifunctional Smart Spec |
|---|---|---|---|
| Nominal Mounting Height | 9.0 m (30 ft) to luminaire spigot | 9.0 m (30 ft) to luminaire spigot | 9.0 m (Base shaft + telemetry extension) |
| Arm Configuration & Reach | Single curved arm: 1.2 m – 2.0 m outreach | Single angular arm: 1.5 m – 2.5 m outreach | Integrated cantilever with internal cable run |
| Shaft Geometry & Taper | Round conical (12 mm/m taper) | 8-sided octagonal (14 mm/m taper) | Step-conical or square transition |
| Material Specification | Q235B / S235JR (Yield $\ge 235\text{ MPa}$) | Q355B / S355JR (Yield $\ge 355\text{ MPa}$) | Q355D / ASTM A572 Grade 50 |
| Wall Thickness ($\mathbf{t}$) | 3.0 mm – 3.5 mm nominal | 3.75 mm – 4.5 mm heavy duty | 4.0 mm – 5.0 mm modular reinforced |
| Top / Bottom Diameters | Top: $\varnothing 60 - 76\text{ mm}$ / Bottom: $\varnothing 168 - 180\text{ mm}$ | Top: $75\text{ mm A/F}$ / Bottom: $190 - 210\text{ mm A/F}$ | Top: $\varnothing 89\text{ mm}$ / Bottom: $\varnothing 219\text{ mm}$ |
| Base Flange Plate | $300 \times 300 \times 16\text{ mm}$ (PCD $240\text{ mm}$) | $350 \times 350 \times 20\text{ mm}$ (PCD $280\text{ mm}$) | $400 \times 400 \times 24\text{ mm}$ (Gusset reinforced) |
| Anchor Bolts Assembly | $4 \times \text{M}20 \times 700\text{ mm}$ (Gr. 4.8 / 8.8) | $4 \times \text{M}24 \times 900\text{ mm}$ (Gr. 8.8 Galvanized) | $4 \text{ or } 8 \times \text{M}27 \times 1000\text{ mm}$ (ASTM F1554) |
| Aerodynamic Wind Rating | 140 km/h (38.8 m/s) basic gust | 180 km/h (50.0 m/s) hurricane class | 200 km/h (55.5 m/s) extreme zone |
| Corrosion Protection | Hot-dip galvanized EN ISO 1461 ($>86\,\mu\text{m}$) | HDG + Thermoset Polyester Powder ($160\,\mu\text{m}$) | Duplex C5-M Marine Coastal Anti-Corrosion |
Real-World Deployment: Addressing Global Procurement Constraints
From hyper-arid Middle Eastern deserts to high-salinity coastal ports and sub-zero Eurasian highways, how our customized 9m single arm poles endure localized site stressors.
Coastal Ports & Humid Tropics
Case Focus: Cebu Baseport & Chancay Gateway: Extreme marine humidity requires more than standard zinc. We deploy duplex coating systems combining shot-blasting to Sa 2.5, hot-dip galvanizing, and electrostatic pure polyester powders (AkzoNobel / Tiger Drylac) tested for 1,000+ hours under ASTM B117 salt fog exposure.
Desert Arterials & High Thermal Deltas
Case Focus: Kuwait & Saudi Highway Arterials: Ambient temperatures soaring above $50^\circ\text{C}$ accompanied by severe sand abrasion demand UV-stabilized architectural powders and gasketed access doors with IP65 ingress ratings. Internal wiring brackets and handhole junctions prevent fine sand penetration.
Severe Sub-Zero Continental Corridors
Case Focus: Manas Airport – Bishkek Highway: Steppe winters drop to $-40^\circ\text{C}$. Common structural steels can undergo ductile-to-brittle transitions under dynamic wind vibrations. We specify impact-tested Q355D steel with certified Charpy V-notch energy ($\ge 27\text{ Joules}$ at $-20^\circ\text{C} / -40^\circ\text{C}$).
Frequently Asked Questions (Technical & Commercial)
Clear, uncompromising technical answers compiled directly from our structural engineering division for procurement directors, quantity surveyors, and project managers.
1. What exact structural design codes are utilized for structural calculations?
We engineer our poles primarily to AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals (LTS-6), European Norm EN 40-3-1 / EN 40-3-3, and Australian standard AS/NZS 4676. For each project, our engineering department submits comprehensive wind-load calculation books, maximum base shear force, overturning moment, and foundation reaction parameters.
2. What are the key differences between conical and octagonal 9-meter shafts?
Conical poles present a round, sleek aesthetic with a lower drag coefficient ($C_d \approx 0.65 - 0.75$), making them ideal for urban centers, boulevards, and pedestrian parkways. Octagonal poles possess 8 distinct longitudinal bending planes that act as natural stiffening ribs, yielding a higher second moment of area ($I_x, I_y$) and superior torsional resistance against gust-induced vibrations on open expressways.
3. How do you guarantee the anti-corrosion life of the 9m pole exceeds 25-30 years?
All fabricated columns undergo full-immersion hot-dip galvanizing according to ASTM A123 / ISO 1461. The steel is dipped in an automated bath containing 99.995% high-grade molten zinc at $450^\circ\text{C}$, yielding an iron-zinc alloy layer ($Gamma$, $Delta$, and $Zeta$ phases) topped by a ductile pure zinc ($Eta$) layer with a total dry film thickness exceeding $86\,\mu\text{m}$. For severe environments, we apply a thermoset polyester powder coat for duplex protection lasting 30+ years.
4. Can the single arm be detached for shipping, or is it integrated with the shaft?
Both options are available. For containerized sea freight optimization, we strongly recommend a slip-fit (spigot sleeve) or internal bolted flange detachable single arm design. This permits nesting the 9-meter tapered shafts inside 40ft High Cube (40HQ) containers, reducing ocean freight costs per unit by over 60% compared to monolithic curved poles.
5. What quality control steps are taken during the welding phase?
All welders are certified according to AWS D1.1 structural welding standards. The longitudinal seam is executed via automated submerged arc welding (SAW). For base flange plate fillets, we perform 100% visual inspection (VT) and random ultrasonic testing (UT) or magnetic particle testing (MT) at designated frequencies to verify zero internal slag, porosity, or incomplete root penetration.
6. What are the standard anchor bolt and foundation provisions provided?
Standard 9-meter installations utilize 4 high-tensile steel anchor bolts (M20 or M24 grade 8.8 or ASTM F1554 Grade 55) with lengths between 700 mm and 900 mm and a $90^\circ$ hook or bottom anchor plate. We provide zinc-plated hardware including 2 leveling hex nuts, 1 locking nut, and 2 heavy washers per bolt, along with a rigid steel positioning template for accurate civil casting.
7. Can you integrate solar panels and batteries onto a 9-meter single arm pole?
Yes. We manufacture customized split-type solar street light poles where the top section includes a 360-degree rotatable PV mounting bracket designed for optimal solar irradiance tilt, while the base or upper shaft hosts a lockable IP67 battery enclosure or supports an integrated lithium (LiFePO4) energy pack.
8. What documentation is supplied to support municipal tender bids?
We provide full tender-support packages including: 2D dimensioned AutoCAD drawings, 3D STEP/IGES models, structural finite element stress reports, certified Mill Test Certificates (EN 10204 3.1), hot-dip galvanizing bath analysis reports, powder coating cross-hatch adhesion test certificates, and complete DIALux lighting calculations.
9. How do you protect the poles from surface damage during international transit?
Poles are bundled using non-abrasive industrial bubble wraps, protective woven poly-bags, and timber cradle separators. Base plates and arm spigots receive reinforced high-density polyethylene edge protectors to prevent metal-to-metal chafing and preserve coating integrity during maritime transit and rough port handling.
10. What is your typical production lead time for full container orders?
For standard custom orders of 100 to 500 units, our average manufacturing lead time is 15 to 20 working days following technical drawing sign-off. High-volume emergency municipal framework deliveries can be phased, utilizing multiple automated production lines operating simultaneously.
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Product SpecificationsConsult with Our Senior Structural Engineers
Skip middlemen and commercial agents. Send your Bill of Quantities (BOQ), tender drawings, or project specifications directly to our manufacturing engineers in Gaoyou, Jiangsu. We return full structural submittal files, foundation calculations, and competitive factory-direct pricing within 24 business hours.