D41X/J、D341X/J法兰式衬胶蝶阀
面议D41X/J、D341X/J法兰式衬胶蝶阀
面议D371X,D71X,D371J,D341J对夹式软密封蝶阀
面议DX7K41X DX7K41H蓄能罐式缓闭止回蝶阀
面议DS41X/H DS341X/H伸缩蝶阀
面议D41W D341W通风蝶阀
面议D361焊接式连接方式,多层次硬密封偏心结构
面议D43H、D343H法兰式金属硬密封
面议D73H、D373H对夹式金属硬密封
面议D73H(对夹式) D43H(法兰式)金属硬密封蝶阀
面议DK43H,DU43H,DT43H,DQ43H电动法兰硬密封蝶阀
面议D971X,DK73H,DU73H,DT73H,DQ73H对夹式电动硬密封蝶阀
面议D941X,DK41X,DU41X,DT41X,DQ41X法兰式电动衬胶蝶阀
面议