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本产品的品牌是北京中石化阀门,型号是U41SM,材质是球墨铸铁,连接形式是法兰,公称通径是15-50(mm),适用介质是水,压力环境是常压,工作温度是高温,标准是国标,流动方向是单向,驱动方式是手动,零部件及配件是配件,用途是截止,类型(通道位置)是二通式,密封材料是SM