Handan Zhengda Steel Pipe Co., Ltd (“ZDP” in English for short) is one of ten mainly supported enterprise by Handan government, one of the top 100 enterprises in Hebei, one of the top 500 manufacturers in China, one of the top 500 private enterprises in China, high and new tech enterprises in China. Dealing with ERW steel pipe, galvanized pipe, spiral pipe, square pipe, steel-plastic composites pipe, Zhengda pipe comprehensive strength has been one of top 3 in steel pipe industry. Focusing on manufacture and sales, it is a modern comprehensive enterprise of technology research, trade, cultural development.