Strain Tower
Product Overview
The Strain Tower is a self-supporting steel lattice tower used at transmission line tension sections, terminal sections, and angle locations to withstand conductor tension and unbalanced loads.
Core Features
Dual-sided strain attachment points anchor conductor tension and withstand unbalanced loads caused by conductor breakage
Reinforced strain attachment plates and cross-arm joints, reducing localized stress under long-term tension loading
Three-dimensional bracing system, improving torsional resistance for long-span and heavy ice-loading applications
Angle tower-head configuration for lateral loads caused by conductor deviation
86 μm hot-dip galvanized coating providing long-term atmospheric corrosion protection
Technical Specifications
|
Parameter |
Standard Specification / Range |
|
Material Grade |
Q235B, Q355B, Q420B, ASTM A572 GR50 / GR65 |
|
Corrosion Protection |
Hot-Dip Galvanizing (ISO 1461) |
|
Applicable Voltage Level |
35kV–500kV |
|
Design Wind Speed |
30 m/s–60 m/s (Customized According to Site Conditions) |
|
Design Standards |
TIA-222-G/H, IEC 60826, EN 1993, ASCE 10 |
|
Welding Inspection |
100% Ultrasonic Testing (UT) and Magnetic Particle Testing (MT) |
|
Height Range |
9 m–60 m (Customized According to Span and Tower Configuration) |
|
Ultimate Unbalanced Load |
Verified According to Conductor Breakage and Design Loading Conditions |
|
Fasteners Grade |
Grade 8.8 or 10.9 Hot-Dip Galvanized High-Strength Bolts with Double Lock Nuts |
Design Inputs
- Voltage Level
- Span Length
- Design Wind Speed
- Terrain Category
- Conductor Type and Bundle Configuration
- Ice Loading Thickness
- Seismic Requirements (If Applicable)
Manufacturing & Quality Control
Assembly Accuracy Control
A 1:1 physical trial assembly is conducted before shipment to verify hole alignment and assembly accuracy, reducing onsite adjustment requirements.
International Manufacturing Standards
Certified under ISO 9001, fabrication and welding procedures are carried out in accordance with EN 1090 and AWS D1.1 requirements.
Complete Quality Documentation
Material Test Reports (MTR), galvanizing inspection reports, UT/MT inspection reports, and trial assembly records are supplied with shipment.
Packaging & Shipping
Nested Component Packing
Steel members are nested by size, protected with rubber edge guards, and secured on non-fumigation pallets using high-tensile steel straps to reduce transportation damage.
Stamped Identification System
Each component carries a unique stamped identification code and is packed according to installation sequence for easier site inventory management and assembly.
FAQ
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