The design service life is typically 50 years; verticality is controlled to within 1/1000 of the tower height; and grounding resistance is ≤4Ω (≤10Ω in special regions).
Load-bearing capacity must comply with the GB 50545-2010 standard (e.g., tangent towers must withstand wind pressure corresponding to a wind speed of 30 m/s).
Material grades: Q235 and Q345 for standard transmission lines; Q420 and Q460 for extra-high voltage lines or heavy-load areas (yield strength increases sequentially).
Complies with the GB/T 2694-2018 standard; main structural materials typically include Q235, Q345, or Q420 steel; hot-dip galvanized coating thickness ≥85 μm; design wind speed 25–55 m/s; operating temperature range -60°C to 60°C; seismic intensity rating of 8; grounding resistance ≤4Ω; and verticality deviation <1/1000.
