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As2129 Table D, Table E As4087 Large Size Cast Iron Flange Butterfly Valve with Manual Operation, Find Details and Price about Big Size Ductile Iron Butterfly Valve Double Flange Eccentric Butterfly Valve from As2129 Table D, Table E As4087 Large Size Cast Iron Flange Butterfly Valve with Manual Operation - Tianjin Tanggu TWT Valve Co., Ltd.