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Heavy Duty Angle Tower

The Heavy Duty Angle Tower is a high-rigidity self-supporting steel lattice tower designed for large-angle transmission line deviations and heavy-load transmission corridors.

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Product Overview

The Heavy Duty Angle Tower is a high-rigidity self-supporting steel lattice tower designed for large-angle transmission line deviations and heavy-load transmission corridors.

Core Features

Built with Q420B/Q460 high-strength thick-walled angle steel to carry the heavy unbalanced loads generated at 60°–90° line angles.
Critical joints are reinforced with multi-tier thick gusset plates to distribute concentrated stresses and reduce tearing risks at member intersections.
Integrated with rigid anti-torsion bracing systems to maintain tower stability under broken-wire and uneven ice-loading conditions.
Protected with a ≥100 μm hot-dip galvanized coating to resist atmospheric corrosion in coastal, industrial, and high-humidity environments.

Technical Specifications

Parameter	Standard Specification / Range
Material Grade	Q355B, Q420B, Q460, ASTM A572 GR50 / GR65
Anti-Corrosion	Hot-Dip Galvanizing (ASTM A123 / ISO 1461, Zinc Thickness ≥100 μm)
Voltage Level	220 kV–500 kV and UHV Backbone Transmission Lines
Line Angle Range	60°–75° (Heavy Type A) / 75°–90° (Heavy Type B / Terminal Type)
Design Standards	ASCE 10-15, TIA-222-H, EN 1993, IEC 60826
Welding Inspection	100% Ultrasonic Testing (UT) and Magnetic Particle Testing (MT)
Radiographic Testing (RT)	Available upon project requirements
Fasteners Grade	Grade 8.8 or 10.9 hot-dip galvanized bolts with double nuts and heavy-duty lock washers

Compliance & Technical Support

International Standard Compliance

Fabrication follows international transmission tower standards including ASCE 10 and EN 1993, with welding procedures compliant with AWS D1.1 and CE requirements.

Onsite Technical Guidance

Engineering personnel can be dispatched to overseas project sites to support foundation construction and tower erection.

24-Hour Remote Support

Global technical support is available, with component replenishment verification and response completed within 48 hours.

FAQ

Q: Can the tower be customized for different conductor configurations and circuit arrangements?

A: Yes. Cross-arm dimensions, attachment locations, and node structures can be adjusted according to conductor type, bundle configuration, circuit quantity, and line deviation requirements.

Q: Is the tower suitable for river crossings, valley crossings, and other long-span transmission projects?

A: Yes. Structural verification can be performed based on span distance, conductor tension, and site-specific terrain conditions.

Q: How does the tower adapt to steep terrain with significant elevation differences?

A: Customized unequal leg extensions can be provided to match site topography and reduce foundation excavation requirements.

Q: What are your standard production lead time and payment terms?

A: Production typically takes 40–50 days after drawing approval. Terms are 30% T/T deposit and 70% balance against the B/L copy or after SGS inspection approval.

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