D73H进口手动对夹式硬密封蝶阀D73H

D43H进口法兰硬密封蝶阀D43H

D373H进口蜗轮对夹式硬密封蝶阀D373H

D343H进口蜗轮法兰硬密封蝶阀D343H

D973H进口电动对夹式硬密封蝶阀D973H

D943H进口电动法兰硬密封蝶阀D943H

D673H进口气动对夹式硬密封蝶阀D673H

D643H进口气动法兰硬密封蝶阀D643H

D941X进口法兰电动蝶阀D941X

D671X进口对夹式气动蝶阀D671X

D71X进口手柄对夹式软密封蝶阀D71X

D41X进口手柄法兰软密封蝶阀D41X