D343H-16C DN350,D343H-16C DN400,D343H-16C DN450,多层次硬密封蝶阀 wena蝶阀
D671X-10C DN50,D671X-10C DN65,D671X-10C DN80 气动对夹式蝶阀 wena蝶阀
D371X-10C DN50,D371X-10C DN65,D371X-10C DN80,对夹式软密封蝶阀 wena蝶阀
D371X-16P DN125,D371X-16P DN150,D371X-16P DN200
D343H-16C DN50,D343H-16C DN65,D343H-16C DN80,多层次硬密封蝶阀 wena蝶阀
D343H-16C DN350,D343H-16C DN400,D343H-16C DN450
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