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2126 cast steel flange butterfly valve products are offered for sale by suppliers on Alibaba.com, of which butterfly valves accounts for 70%. A wide variety of cast steel flange butterfly valve options are available to you, such as normal temperature, medium temperature and high temperature.You can also choose from stainless steel, alloy and aluminum alloy cast steel flange butterfly valve,as well as from black, white, and silver cast steel flange butterfly valve,and whether cast steel flange butterfly valve is compact, or center line.