Steel towers used for telecommunications consist of steel materials treated by hot-dip galvanization (zinc plating). Specifications for main bridge components call for HDZ55 plating with 550 g of zinc per 1 m² and an average film thickness of about 80 μm, while those for hand rails and gratings call for 350 g of zinc per 1 m².

It was originally accepted that zinc plating would halt the progress of corrosion through the formation of white rust (mainly zinc hydroxide), which provides protection. However, in environments where corrosion can be severe such as islands and coastal areas and hot-spring areas, there are many situations in which corrosion can progress, as listed in Table 1, leading to the formation of red rust (iron oxide) (Fig. 4). Moreover, if the corrosion of steel together with wastage is allowed to continue, the main columns or other components of a steel tower may have to be replaced.

2.product features
(1) beautiful shape, multi-style;
(2) strong wind resistance, the highest resistance to 12 grades of wind;
(3)strong seismic performance, the highest resistance to earthquakes of M = 8, the design of the basic earthquake acceleration value is 0.20 g;
(4) can be customized according to the requirements of various specifications, to meet different needs of customers.