High-Voltage Steel Transmission Towers
IEC & ASTM Certified Lattice and Tubular Structures for 110kV-800kV Power Grids
Engineered for extreme weather conditions. Deployed across China Southern Power Grid networks and major Southeast Asian infrastructure projects.
Transmission Infrastructure Excellence
For 23 years, Xytower has manufactured high-tensile steel transmission towers supporting national power grids. Our 1,000-employee facility produces 50,000+ tons annually, utilizing Q235, Q345, and Q420 grade steel with advanced hot-dip galvanization (ISO 1461 compliant) ensuring 30+ year service life in coastal and high-humidity environments.
Steel Tower Product Lines
Comprehensive solutions engineered for voltage classes from 66kV to 800kV, designed to meet IEC, ASTM, and GB standards
Most Popular
Angular Steel Lattice Towers
Voltage: 110kV-500kV | Material: Q345B/Q420B | Zinc Coating: ≥86μm
Traditional robust design for high-voltage corridors. Optimized for seismic zone applications with proven performance across Southeast Asian grids.
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Tubular Steel Poles
Voltage: 220kV-800kV | Material: Q460 High-tensile | Wind Load: 36m/s+
Reduced wind resistance profile ideal for typhoon-prone regions. Minimal footprint design for constrained right-of-way applications.
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Steel Monopoles
Height: 15m-60m | Base: Polygonal/Round | Connection: Slip joint/Flange
Aesthetic solutions for urban substations and constrained right-of-way applications. Easy installation with minimal foundation requirements.
View Technical DetailsEngineering Standards & Materials
| Steel Grade | Standard | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Application |
|---|---|---|---|---|---|
| Q235B | GB/T 700 | ≥235 | 370-500 | ≥26 | Standard members, bracing |
| Q345B | GB/T 1591 | ≥345 | 470-630 | ≥21 | Primary load-bearing members |
| Q420B | GB/T 1591 | ≥420 | 520-680 | ≥19 | High-stress joints, large towers |
| Q460C | GB/T 1591 | ≥460 | 550-720 | ≥17 | Ultra-high voltage towers |
| Environment Class | Standard | Zinc Thickness (μm) | Service Life | Applications |
|---|---|---|---|---|
| Rural/Inland | ASTM A123 | 65-75 | 30+ years | Standard installations |
| Industrial/Urban | ISO 1461 | 75-86 | 30+ years | Substation structures |
| Coastal/Humid | ISO 1461 | 86-100 | 40+ years | Southeast Asia projects |
| Marine/Extreme | ASTM A123 | 100+ | 50+ years | Offshore, chemical plants |
| Design Parameter | Standard Reference | Standard Rating | Enhanced Rating |
|---|---|---|---|
| Wind Speed | IEC 60826 | 30 m/s | 42 m/s (Typhoon zones) |
| Ice Loading | CIGRE TB 344 | 0-10 mm | 10-30 mm (High altitude) |
| Seismic Intensity | DL/T 5154 | 8 degree | 9 degree (Seismic zones) |
| Temperature Range | GB/T 2694 | -20°C to +40°C | -40°C to +50°C |
All designs validated by PLS-CADD and MS-Tower software for structural integrity under extreme loading conditions. Third-party verification by SGS/BV available upon request.
Manufacturing & Quality Assurance
Precision Manufacturing
Automated CNC punching lines ensure ±1mm accuracy in tower member fabrication. Our hydraulic pressing systems create high-strength bolt connections using Grade 8.8 and 10.9 fasteners per GB/T 5782 specifications. Computer-controlled angle cutting minimizes material waste while maintaining structural integrity.
Quality Control Protocol
100% ultrasonic testing of weld seams ensures defect-free connections. Zinc coating thickness verified by calibrated magnetic gauges at multiple points per ISO 1461 requirements. Full traceability through material certificates and production batch records. Third-party inspection by SGS/Bureau Veritas available upon request.
Proven Performance in Southeast Asia
Climate-adapted designs deployed across challenging terrain
Malaysia
230kV Double-Circuit Line, 150km corridor
Myanmar
National Grid Extension, 132kV Monopoles
Thailand
Suburban Network Upgrade, 115kV Lattice Towers
Climate-adapted designs withstand tropical humidity, monsoon winds up to 42 m/s, and seismic activity up to intensity 9.
Custom Engineering Support
Our 50-person technical team provides foundation design guidance, load analysis, and assembly supervision. From initial surveying to final energization, we ensure your transmission infrastructure meets all technical requirements and regulatory standards.
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