High-Voltage Polygonal Monopole Transmission Towers
220kV - 500kV Solutions for Constrained Right-of-Way Applications
Engineered for Urban and High-Density Transmission Corridors
Xytower's proprietary polygonal forming technology delivers exceptional structural efficiency for constrained right-of-way applications. Our high-voltage monopole towers are manufactured from high-strength steel grades (Q345, Q420, Q460) and optimized for typhoon-prone Southeast Asian climates. With 1,000 skilled employees and 23 years of manufacturing excellence, we maintain full compliance with China Southern Power Grid standards and international IEC specifications.
- 40% smaller footprint compared to conventional lattice towers — ideal for urban corridors and congested substation entries
- Anti-climbing security features — integrated deterrents prevent unauthorized access in populated areas
- Multi-circuit configuration capability — supports single, double, or triple circuit arrangements with optimized head designs
Manufacturing Capacity: Annual output of 80,000+ tonnes with ISO 9001:2015 certified quality management systems.
Technical Parameters
| Parameter | Standard Range | Custom Options | Unit |
|---|---|---|---|
| Voltage Class | 220kV, 330kV, 500kV | 66kV, 110kV, 750kV | kV |
| Height Range | 18 - 60 | Up to 80 | m (ft) |
| Shaft Sections | Polygonal (8/12/16 sides) | Custom polygon profiles | — |
| Diameter Range | 300 - 2000 | Up to 2500 | mm |
| Material Grade | GB/T Q345, Q420, Q460 | ASTM A572 Gr50, Gr65 | — |
| Wall Thickness | 6 - 25 | Up to 32 | mm |
| Galvanization | ≥86 μm (ASTM A123) | ≥100 μm (ISO 1461) | μm |
| Wind Speed Rating | 35 - 55 | Up to 60 (typhoon zones) | m/s |
| Design Standards | IEC 60826, GB 50545 | ASCE 48, EN 50341 | — |
| Foundation Load | Consult datasheet | Project-specific analysis | kN |
| Deflection Limit | H/100 (service), H/75 (ultimate) | Per client specification | — |
Manufacturing Excellence
CNC Forming Technology
Automated rolling mills achieve ±1mm accuracy on polygonal profiles. Multi-stage forming process ensures uniform wall thickness distribution and precise dimensional tolerances for optimal structural performance.
Welding Quality Assurance
AWS D1.1 certified welders with 100% ultrasonic testing on critical seams. Automated submerged arc welding (SAW) for longitudinal seams ensures penetration and eliminates defects in high-stress zones.
Surface Treatment
23-stage surface preparation including shot blasting and chemical cleaning. Zinc coating uniformity testing with magnetic thickness gauges ensures 86-120μm coverage for 50+ year corrosion protection.
Application Scenarios
Urban Transmission Corridors
Narrow corridor installation with minimal land acquisition requirements. Aesthetic camouflage options available including green coatings and architectural cladding for sensitive urban environments.
Engineering Considerations: Reduced electromagnetic field (EMF) exposure at ground level due to compact footprint. Anti-climbing features and integrated safety systems for populated areas.
Quality Certifications & Standards
Project References Southeast Asia Focus
Malaysia 500kV Transmission Line
Tropical climate with high humidity (85%+), seasonal monsoons, and coastal proximity requiring enhanced corrosion protection.
Enhanced zinc coating (120μm), specialized sealant at flange connections, and tropical-grade paint system for UV resistance.
Myanmar Urban Grid Upgrade
Severely constrained right-of-way in high-density urban corridor with strict height restrictions and vibration concerns.
Compact head design with optimized conductor spacing. Integrated climbing pegs with anti-climb guards for maintenance access.
Technical Downloads
High-Voltage Monopole Technical Datasheet
CAD Drawings
Installation Guidelines
Foundation Load Data Sheet
Galvanization Test Reports Sample
Ready for Your Next Infrastructure Project?
Join government and utility partners in Southeast Asia who trust Xytower's 23 years of manufacturing excellence. Our engineering team is ready to support your technical requirements from concept to commissioning.