High-Voltage Tapered Steel Monopole Tower
220kV Class | ASTM A572 Grade 65 | Hot-Dip Galvanized
Optimize Right-of-Way Constraints
Optimize right-of-way constraints with Xytower's high-strength tapered monopole solution, engineered for 220kV transmission in tropical climates. Our single-shaft design delivers exceptional performance in congested urban corridors and aesthetic-sensitive environments where traditional lattice towers are impractical.
With 23 years of monopole manufacturing excellence, Xytower has supplied over 15,000 units to transmission projects across Southeast Asia, including critical infrastructure for Malaysia's TNB grid modernization and Myanmar's 230kV backbone network.
- Reduced footprint — Requires 60% less land area than equivalent lattice towers, ideal for dense urban installations
- Anti-twist polygonal construction — 12/16/20-sided shaft geometry eliminates torsional stress under asymmetric wind loads
- Maintenance-free design life — 50+ year structural integrity with hot-dip galvanization per ASTM A123/ISO 1461
- Tropical climate optimization — Engineered for high-humidity, high-salinity Southeast Asian environments
Technical Note: All specifications conform to GB/T 2694-2018, IEC 60652, and client-specific load criteria. Custom engineering available for wind speeds exceeding 45m/s or seismic Zone 8+ applications.
Technical Specifications
Engineering data for procurement and structural analysis
Engineering Advantages
Technical innovations that ensure decades of reliable service
Anti-Corrosion Excellence
Our 23-stage surface preparation process includes shot blasting to Sa2.5, flux immersion, and controlled zinc bath immersion at 450°C. Results in 50-year durability guarantee in C3 environments, backed by accelerated salt spray testing (3,000+ hours).
Modular Climbing System
Internal climbing pegs positioned at 300mm vertical spacing with integrated fall-arrest anchorage points every 6 meters. Internal cable routing gallery eliminates external climbers and reduces EMI exposure to sensitive fiber optic cables.
Foundation Flexibility
Engineered for three foundation types: embedded cage (standard), base plate with anchor bolts (rocky terrain), or drilled shaft (poor soil conditions). Load distribution analysis provided for each configuration with settlement calculations.
Manufacturing Excellence
6-stage precision manufacturing process — from raw steel to finished tower
Raw Material Testing
Spectral analysis for chemical composition, tensile testing for mechanical properties, and ultrasonic inspection for internal defects on all steel plates.
CNC Plasma Cutting
High-definition plasma cutting with ±1mm accuracy. Automatic nesting software optimizes material utilization to 94%+ while maintaining heat-affected zone requirements.
Hydraulic Pressing
1,200-ton press forms polygonal shaft sections with automated springback compensation. CNC roll calibration ensures taper consistency across all segments.
Robotic Welding
AWS D1.1 certified welding procedures with robotic MIG/MAG systems. Full penetration welds on all structural seams with 100% visual + UT inspection.
Hot-Dip Galvanizing
Automated zinc bath with precise temperature control (450±5°C). Centrifuge treatment for threaded components ensures clean, uniform coating.
QC & Dimensional Check
Total station survey for assembly geometry, coating thickness gauge verification, and load test simulation. Digital QC records archived per unit serial number.
Xytower's 1,000-employee workforce includes 126 certified welding inspectors and 34 structural engineers. Our facility maintains CNC accuracy of ±1mm and conducts non-destructive testing (UT/MT) on 100% of critical welds.
Project References
Proven performance across Southeast Asian infrastructure
Malaysia TNB Grid Upgrade
Installation of 45 XYT-MP-220 units for 275kV transmission corridor modernization. Units operational since 2021 with zero corrosion defects reported.
Myanmar 230kV Transmission Line
Custom flange connections engineered for seismic Zone 8 compliance. 67 units spanning 280km backbone infrastructure.
Thailand Provincial Power Authority
Aesthetic monopole design with reduced visual impact for urban Bangkok corridor. 50-year maintenance-free specification.
Related Products
Complete monopole solutions for diverse applications
Monopole vs. Lattice Tower Comparison
| Characteristic | Tapered Monopole | Lattice Tower |
|---|---|---|
| Footprint (Base Area) | 0.8-2.4m diameter | 6-15m per side |
| Visual Impact | Low — single shaft | High — open framework |
| Installation Time | 1-2 days (bolted sections) | 5-10 days (bolt assembly) |
| Climbing Access | Internal — protected | External — exposed |
| Best Application | Urban, aesthetic-sensitive, limited ROW | Rural, long-span, heavy load |
Request Technical Consultation
Our engineering team responds within 24 hours with preliminary drawings and feasibility assessment.