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彈性硬密封法蘭蝶閥 D343H

彈性硬密封法蘭蝶閥 D343H

產品名稱：彈性硬密封法蘭蝶閥 D343H

法蘭連接尺寸:GB/T9113.1-2000；GB/T9113.2-2000       GB/T9115.1-2000；GB/T9115.2-2000

所屬系列：法蘭蝶閥系列

設計標準 :GB/T12238-1989

結構長度:GB/T12221-1989

壓力試驗:GB/T13927-1992；JB/T9092-1999

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