Opening: When Standard Poles Aren't Enough
Some spaces demand more than a 12-meter pole can deliver.
A 25m high mast light isn't just a taller version of a standard street light-it's a completely different class of structure, designed for:
Airports – Apron, cargo areas, runway approaches
Seaports – Container terminals, berths, storage yards
Rail yards – Marshaling yards, loading areas, intermodal facilities
Highway interchanges – Cloverleaf intersections, toll plazas
Large sports complexes – Stadium perimeters, training fields
Industrial sites – Refineries, mines, manufacturing campuses
When you need to illuminate one to two acres from a single point, 25m high mast lights are the answer.
What Is a 25m High Mast Light?
Definition
A high mast light is a tall lighting structure-typically 15m to 50m in height-equipped with a ring of multiple floodlights mounted on a raising and lowering system at the top. Unlike fixed-head lighting, high masts allow maintenance personnel to lower the luminaire ring to ground level for safe, efficient service.
Why 25 Meters?
| Height | Typical Application | Coverage Radius |
|---|---|---|
| 15m-18m | Small ports, truck terminals | 40-50m |
| 20m-25m | Airports, rail yards, highway interchanges | 60-80m |
| 25m-30m | Major seaports, large industrial sites | 80-100m |
| 30m-50m | Stadiums, major airports, special applications | 100-150m+ |
25 meters represents the sweet spot where one structure effectively covers 80-100 meter diameter areas with uniform illumination, making it the most specified height for large-scale industrial and transportation lighting.
Three Core Components
| Component | Function | Key Feature |
|---|---|---|
| Pole Structure | Vertical support, withstands wind and weight | Tapered octagonal section, hot-dip galvanized |
| Luminaire Ring | Houses floodlights, lowers for maintenance | Raises and lowers via winch system |
| Lifting System | Allows safe ground-level maintenance | Winch, cable, pulley, latch mechanism |
The Pole Structure
Design Specifications
| Parameter | Specification |
|---|---|
| Overall Height | 25m ±0.5m |
| Material | Q345B / Q460 high-strength steel |
| Section Shape | Octagonal (8-sided) or conical round |
| Wall Thickness | 8mm – 20mm (tapered, thicker at base) |
| Base Diameter | 600mm – 900mm (at ground level) |
| Top Diameter | 200mm – 300mm (at 25m height) |
| Sections | 2-3 sections, flanged or telescopic |
| Base Plate | 1000mm × 1000mm × 30-40mm steel |
| Anchor Bolts | 8-12 bolts, M36-M48, 1500-2000mm embedment |
| Design Standard | GB/T 2694, IEC 60598, ASTM A572 |
Structural Features
| Feature | Benefit |
|---|---|
| Tapered octagonal section | Optimal strength-to-weight ratio, reduced wind load |
| Flanged section connections | Simplified transport, field assembly |
| Reinforced base | Extra thickness for moment resistance |
| Internal access ladder | Optional safety climb system |
| Cable entry box | Weatherproof, located at base |
Wind Load Capacity
| Parameter | Rating |
|---|---|
| Design Wind Speed | 160-180 km/h (45-50 m/s) |
| Seismic Zone | Up to magnitude 8 (optional) |
| Safety Factor | ≥2.0 on yield strength |
| Maximum Deflection | ≤1.5% of height (≤375mm at top) |
The Luminaire Ring
Configuration Options
| Configuration | Description | Application |
|---|---|---|
| Ring Type | Circular ring, 8-16 floodlights evenly spaced | Airports, seaports, symmetrical areas |
| Rectangular Frame | Rectangular or square frame, 4-12 floodlights | Highway interchanges, asymmetrical areas |
| Double-Tier Ring | Two rings, upper and lower, 12-24 floodlights | High-precision lighting, sports fields |
Typical Luminaire Configuration
| Parameter | Specification |
|---|---|
| Number of Floodlights | 4 / 6 / 8 / 10 / 12 / 16 / 20 / 24 |
| Floodlight Wattage | 400W – 1500W per unit |
| Total Installed Power | 5kW – 30kW per pole |
| Luminaire Type | LED floodlight / Metal halide (optional) |
| Beam Angle | Narrow (15°-30°) for long distance, wide for area |
| Distribution | Symmetric or asymmetric as required |
Lighting Performance
| Parameter | Target |
|---|---|
| Illuminance | 20-50 lux (average, varies by application) |
| Uniformity (Emin/Eavg) | ≥0.5 |
| Glare Control | UGR ≤25 for transport applications |
| Color Temperature | 4000K-5700K (neutral to cool white) |
| CRI | ≥70 (standard), ≥80 (premium) |
The Raising and Lowering System
Why a Raising and Lowering System?
Standard poles require aerial lift equipment (bucket trucks, cranes) for maintenance-costly, time-consuming, and weather-dependent. A 25m high mast with a raising and lowering system allows one person on the ground to lower the luminaire ring, perform maintenance safely, and raise it back into position.
| Maintenance Method | Equipment Required | Time | Safety |
|---|---|---|---|
| Fixed head | Bucket truck / crane | 2-4 hours per pole | High risk, weather dependent |
| Lifting System | Hand crank or electric winch | 15-30 minutes | Ground level, all-weather |
System Components
| Component | Function |
|---|---|
| Winch | Manual or electric, 500kg-2000kg capacity |
| Stainless Steel Cable | 6mm-12mm diameter, 7x19 construction |
| Pulley Assembly | Top-mounted, stainless steel sheaves |
| Latching Mechanism | Automatic engagement when fully raised |
| Safety Brake | Prevents uncontrolled descent |
| Lowering Handle | Ground-accessible, removable for security |
| Cable Guide | Maintains alignment during movement |
Winch Options
| Type | Capacity | Operation | Best For |
|---|---|---|---|
| Manual Winch | 500kg-1000kg | Hand crank, low-speed | Remote sites, occasional maintenance |
| Electric Winch | 1000kg-2000kg | Push-button control | Frequent maintenance, multiple poles |
| Motorized (gear) | Up to 3000kg | Motorized with limit switches | Heavy luminaire rings, 24+ fixtures |
Safety Features
| Feature | Purpose |
|---|---|
| Primary latch | Holds ring securely in raised position |
| Secondary safety latch | Redundant locking mechanism |
| Limit switch | Prevents over-winding (electric models) |
| Brake system | Auto-engaging, prevents free fall |
| Cable inspection access | Allows periodic cable condition checks |
echnical Specifications Summary
Complete System Parameters
| Parameter | Specification |
|---|---|
| Overall Height | 25,000 mm (±500mm) |
| Pole Material | Q345B / Q460 high-strength steel |
| Section Shape | Octagonal (8-sided) |
| Wall Thickness | 8mm (top) – 20mm (base) |
| Base Diameter | 600mm – 900mm |
| Top Diameter | 200mm – 300mm |
| Base Plate | 1000×1000×30-40mm |
| Anchor Bolts | 8-12 pieces, M36-M48, 1500-2000mm |
| Surface Treatment | Hot-dip galvanized (100-120μm) + optional powder coat |
| Corrosion Protection | 25+ years |
| Wind Resistance | 160-180 km/h |
| Luminaire Capacity | 4-24 floodlights |
| Total Power | 5kW – 30kW |
| Lifting System | Manual or electric winch |
| Winch Capacity | 500kg – 2000kg |
| Design Standard | GB/T 2694, IEC 60598, ANSI C136 |
25m High Mast Pole Section Details
| Section | Length | Bottom Diameter | Top Diameter | Wall Thickness |
|---|---|---|---|---|
| Lower Section | 8-10m | 800-900mm | 500-600mm | 12-20mm |
| Middle Section | 8-10m | 500-600mm | 300-400mm | 8-12mm |
| Upper Section | 5-8m | 300-400mm | 200-250mm | 8-10mm |
Why Choose Our 25m High Mast Lights
why choose our products
🏭 Pole Manufacturer Advantage
As a specialist in steel poles, we bring structural engineering expertise to every high mast project:
| Our Advantage | What It Means |
|---|---|
| Integrated design | Pole, ring, and升降 system engineered as a complete system |
| Factory direct | No middlemen-competitive pricing |
| Full customization | Built to your site-specific wind, seismic, and luminaire requirements |
| Single source | One supplier for pole, hardware, and luminaires |
✅ Quality Assurance
| Component | Quality Standard |
|---|---|
| Steel | Q345B / Q460, mill certificates provided |
| Welding | CJP (complete joint penetration), radiographically inspected |
| Galvanizing | 100-120μm, ASTM A123 compliant |
| Winch System | 5:1 safety factor, load tested |
| Cable | 7×19 stainless steel, breaking strength >5× working load |
📊 Project Experience
Our 25m high mast lights have been installed in:
International airports (apron and cargo areas)
Major seaports (container terminals)
Highway interchanges (cloverleaf designs)
Industrial facilities (steel mills, refineries)
Rail intermodal facilities