FBD932F防爆电动凸耳高性能蝶阀

FBD972F防爆电动不锈钢高性能蝶阀

D972F电动对夹高性能蝶阀

D971X防腐蚀电动UPVC塑料蝶阀

D971X电动PPH对夹塑料蝶阀

FBD971F46防爆电动对夹衬氟蝶阀

FBD973H防爆电动三偏心对夹蝶阀

D973H电动对夹三偏心硬密封蝶阀

D971F46、D941F46电动碳钢衬氟蝶阀

D943H电动法兰三偏心硬密封蝶阀

D972F电动美标凸耳高性能蝶阀

FBD971X防爆电动对夹软密封蝶阀