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Qingdao Sangao metal Structure Co.,Ltd is a professional 220kv steel tubular pole manufacturer and factory,Website:http://www.china-weldedpipes.com, we have been exporting high quality 220kv steel tubular pole made in China for years, welcome to contact us.We have got a lot of production licenses and qualifications, and can produce all kinds of 220KV Tublar Steel Tower. High resistive galvanized stainless steel is used in their manufacturing process to ensure high resisitivity againstcorrosion, heat, humidity etc. This product, transmission tower 220kv, is a typical type of our various towers.