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D971X-16電動對夾軟密封蝶閥
電動蝶閥閥門型號：D971X，D941X，D971F46，D941F46通徑規(guī)格：DN50～DN1200結構形式：中線型（對夾式，法蘭）閥體材質：球墨鑄鐵
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