220kv double circuit suspension tower
Place of Origin: China
Type: Transmission Line Steel Tower
Height: 15m~150m
Basic Wind speed: Customize
Materials: Q235B & Q355B equivalent to A36/S235JR & Gr50/S355JR
Surface treatment: Hot-dip galvanized Or other treatments pointed
Lifetime: 20~30 years
Port of Loading: Ningbo, Qingdao, or Shanghai
Package details: Tower members in bundles, small accessories in a wooden box.
220kv double circuit suspension tower belongs to high voltage grade, used for sub-transmission and transmission of bulk quantities of electric power and connection to very large consumers. It includes many types, such as lattice angular tower, tubular tower, monopole, or guyed towers and masts.
After fabrication, all steel towers are delivered to the galvanizing facility to be Hot DIP Galvanized. Towers are processed through the facility by Caustic Cleaning, Pickling, and then fluxing. These strict procedures ensure years of maintenance-free towers. We will take a secondary finish for the client again, which is duplex surface treatment. The duplex coating is applied in our own paint shop.
Duplex surface treatment involves sand-blasting to remove 5-10 microns of the 70-150 micron thick hot dip galvanization coating. This removes any contaminants and roughens the surface. Almost immediately afterwards, in a controlled atmospheric environment, water-based painting, specially developed and manufactured for this purpose, is applied to the tower (structures) to a thickness of 80-120 microns.
