Product Overview
This 220 kV double circuit tower uses Q355B micro-alloyed steel for the main legs, with back-to-back angle assemblies over 200 mm wide butt welded with gusset plates at the joints to raise shear capacity. Six conductor arms keep phase spacing safe through the angle point, and the body carries three maintenance platforms and a full climbing ladder. The whole tower is heavily galvanized at 100-140 microns for coastal salt spray and industrial atmospheres.
Specifications
| Parameter | Value |
|---|---|
| Voltage class | 220 kV double circuit |
| Tower type | Tension / angle tower (0 – 60 degrees) |
| Tower height | 35 m – 75 m |
| Base width | 5 m – 12 m |
| Main member | Q355B / Q345B built-up angle |
| Conductor arms | 6 (three levels each side) |
| Zinc coating | 100 – 140 microns |
| Design ice load | 10 – 20 mm |
| Basic wind speed | 30 – 38 m/s |
| Seismic level | 8 degree |
Applications
Supplied for tension sections and angle points on 220 kV trunk lines and for compact double circuit upgrades of urban transmission corridors. Past projects include transmission works in Pakistan, hydro power evacuation lines in Ethiopia, a dedicated mine power line in Chile and cross-border interconnection schemes in Southeast Asia.
Packing / Delivery / Payment
Packed tower by tower, with long members braced by timber and protected at the ends, and foundation stubs and base plates boxed separately and marked by foundation number. Loaded in 40HQ containers or break bulk. Lead time is 45-60 days. Payment by L/C at sight or T/T with 30% deposit. We issue EN 10204 3.2 witnessed certificates, BV inspection reports, zinc coating thickness records, packing list and Certificate of Origin.