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减压型倒流防止器

减压型倒流防止器

产品系列水利控制阀系列

阀门检验和试压GB/T13927

阀门结构长度GB/T12221

法兰尺寸GB/T17241.6

阀门装配前表面涂环氧树脂粉末并GB/T17219

产品特点

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