D373H-16C对夹多层次金属硬密封蝶阀DD373H-16C
面议D373H-16C对夹多层次金属硬密封蝶阀DD373H-16C
面议D672FP-16C气动二偏心软密封对夹蝶阀D672FP-16C耐高温
面议D971X-1电动对夹软密封蝶阀LD971X-16防爆型
面议D671X-16气动对夹式软密封蝶阀JD671X-16
面议D943H-16C电动三偏心金属硬密封法兰蝶阀D943H-16C
面议D941X-16电动法兰式软密封蝶阀DD941X-16衬胶、耐磨
面议D41X-16手柄法兰式软密封蝶阀DD41X-16
面议D341X-16涡轮法兰软密封蝶阀XD341X-16
面议D343H-16C涡轮三偏心金属硬密封法兰蝶阀DD343H-16C
面议