500kV Lattice Steel Tower for Power Line

For production capacity, our factory delivers an annual output up to 50,000 tons, supporting large-batch orders and customized drawing development for global projectsThe full producing process covers raw-material inspection, CNC cutting, precision welding, drilling, pre-assembly, galvanizing and final dimension re-check before shipment.

Strict quality assurance runs through every procedure: incoming material sampling, intermediate process monitoring and finished-product full-item inspection are implemented. Authoritative test data including mechanical load-bearing reports and galvanizing thickness records are available, with SGS and TÜV test reports supplied upon request. We hold ISO 9001, CE-EN 1090-1 and EN 10025 certifications to satisfy European market requirements.

Proven project cases cover multiple overseas EHV transmission projects. Our towers have been widely deployed in cross-border grid-connection and renewable-energy power-transmission programmes, gaining positive feedback from power-grid operators for stable long-term field operation.

Application Scenarios of 500kV Lattice Steel Tower for Power Line

The 500kV lattice steel tower is key extra-high-voltage transmission infrastructure, widely applied in long-distance bulk power delivery scenarios.

It is adopted for main trunk power transmission lines connecting large-scale thermal, hydro and wind-solar renewable energy power bases to regional central power grids, transferring massive electricity from energy-rich zones to load-intensive urban and industrial areas.

It fits diverse terrain conditions, including flat plains, mountainous hilly regions, river-crossing sections and coastal wind-prone zones. Multiple tower types cover tangent, tension, angle, terminal and trans-river crossing towers for different line functions.

It serves national inter-regional grid interconnection projects, cross-border power transmission programmes, as well as new-energy supporting outgoing lines for wind farms and solar power stations. Besides backbone overhead transmission circuits, it also applies for substation outgoing inlet-outlet segments, adapting to harsh working conditions such as heavy ice coating, strong wind and high humidity for reliable year-round grid operation.

Standard Routine Maintenance Guidelines for 500kV Lattice Steel Tower for Power Line

Regular routine maintenance is critical to guarantee long-term safe operation of 500kV lattice steel tower and avoid structural failure caused by corrosion, loose fittings or external damage.

Visual & structural inspection

Carry out ground visual patrol quarterly and close-up climbing inspection annually. Check main and auxiliary members for deformation, bending, crack and bolt missing or loosening. Verify all connection bolts reach specified torque value; retighten loose fasteners and replace damaged bolts and gaskets immediately.

Anti-corrosion maintenance

Inspect hot-dip galvanized surface for peeling, rust spots and abrasion. Treat local corrosion area with anti-rust coating; re-galvanizing is required for severely corroded components. Focus on tower base, joint nodes and coastal high-humidity sections with higher corrosion risk.

Accessory and foundation check

Inspect earthing devices for breakage or poor connection, test earthing resistance regularly. Examine tower foundation for settlement, crack, water accumulation and surrounding soil erosion; reinforce foundation if displacement occurs. Check attachment parts including warning plates, anti-climbing devices and marking signs for completeness.

Post-extreme weather inspection

Perform special maintenance after strong wind, heavy ice, thunderstorm or flood. Prioritize checking structural distortion, foundation stability and galvanized layer damage. Keep complete maintenance records and submit inspection reports for traceability.

Differences & Importance: 220kV Double Circuit Lattice Tower vs 500kV Lattice Steel Tower

Key Differences

Voltage & transmission capacity

The 220 kV double-circuit lattice tower carries two power circuits on one tower, mainly for regional secondary power grid transmission with medium power-transfer capacity. The 500 kV lattice steel tower belongs to extra-high-voltage level for bulk-energy long-distance delivery, featuring far higher power-transmission capacity.

Structure & mechanical requirement

220 kV double-circuit tower has relatively compact frame, smaller cross-section steel members and moderate height. Its load design targets medium wind-ice load. 500 kV tower uses heavier-duty Q355 series steel, larger member cross-sections, greater tower height and wider conductor spacing to meet high-voltage insulation clearance, resisting stronger wind, ice and seismic loads.

Material & certification baseline

Both adopt hot-dip galvanizing anti-corrosion treatment. Yet 500 kV towers follow stricter EN 1090-1, EN 10025 standards with more stringent SGS/TÜV test requirements on mechanical performance and galvanizing thickness.

Application scenarios

220 kV double-circuit towers serve urban-suburban power supply, local wind-solar plant outgoing lines and intra-provincial grid links. 500 kV towers are applied for national main trunk grids, cross-region energy transmission and large-scale new-energy base output channels.

Importance

220 kV double-circuit towers improve land-use efficiency by accommodating two circuits, easing regional power distribution pressure. 500 kV lattice towers realize large-volume long-distance electricity transportation, balancing energy resource allocation. Matching proper tower type avoids insulation risk or structural overload, securing overall grid stability.

FAQ for 500kV Lattice Steel Tower

Q1: What main steel material do you use for 500kV lattice steel tower?

A: We adopt Q355B high-strength structural steel complying with EN 10025 standard. All components go through hot-dip galvanizing treatment for anti-corrosion, suitable for coastal, icy and high-wind environments.

Q2: Do you support custom design according to client drawings?

A: Yes. Our technical team can review and process customer-provided technical drawings. We support custom height, tower type (tangent, tension, angle, crossing tower), wind-ice load parameters for different project requirements. Full pre-assembly is available before shipment.

Q3: What certifications and test reports can you provide?

A: We hold ISO 9001 quality management certificate and EN 1090-1 CE certification. SGS / TÜV third-party test reports covering mechanical load test, galvanizing thickness and material chemical composition can be supplied upon request.

Q4: What is your production capacity and typical lead time?

A: Annual production capacity reaches over 50,000 tons for steel tower products. Normally lead time is 30-45 working days, subject to order quantity and drawing confirmation.

Q5: Can your 500kV tower adapt to different terrain and weather conditions?

A: Yes. Our towers are engineered for plains, mountains, river-crossing and coastal areas. We customize design against heavy ice, strong wind and seismic conditions to satisfy local grid standards.

Q6: What about after-sales and technical support?

A: We offer drawing consultation, production progress tracking, loading guidance and standard routine-maintenance guidelines. Our team helps resolve on-site installation questions.

Q7: What is your trade term? Can you deliver to European ports?

A: FOB, CIF and CFR are acceptable. We have rich experience exporting to Hamburg and other European ports, responsible for proper container packing and complete shipping documents.

Q8: How do you guarantee product quality during manufacturing?

A: Strict multi-step inspection: raw material incoming inspection, in-process dimension & welding monitoring, finished-piece inspection and pre-assembly check. Defective parts will be replaced before delivery.