气动截止阀 HYJ641H-16,HYJ641H-25,HYJ641H-40,HYJ641H-16-DN50,HYJ641H-40-DN125
65,
HYJ641H-25-DN80,HYJ641H-25-DN100,HYJ641H-25-DN125,HYJ641H-25-DN150,HYJ641H-25-DN200,
HYJ641H-25-DN250,HYJ641H-25-DN300,HYJ641H-40-DN50,HYJ641H-40-DN65,HYJ641H-40-DN80,
HYJ641H-40-DN100,HYJ641H-40-DN150,HYJ641H-40-DN200,HYJ641H-40-DN250,HYJ641H-40-DN300,

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