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投掷式回压阀
投掷式止回阀是一种钻柱内防喷器,也可用于海上各 种钻井浮动装置上切割钻杆的作业。FT 系列投掷式回压 阀由回压阀总成、就位接头、止动环组成。
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投掷式回压阀
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Drop-in type back pressure valve
Drop-in type back pressure valve is a kind of preventers in the drill stem.It can be used to cut drill pipe for all kinds of offshore drilling float devices.FT series Drop-in type back pressure consists of back pressure valve unit assemblage,insertion joint and stop ring.
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