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JF型箭形止回阀

JF型箭形止回阀

JF型箭形止回阀具有避免高压油气重钻具内喷出的功用,事一种主要的钻柱内防喷东西。
Arrow Back-Pressure Valve Type JF

Model “JF” Arrow Back-Pressure Valve is a sort of pipe inside blowout preventer. It adopts arrow valve structure. It’s directly connected to drill stem, and can prevent high-pressure oil stream from blowing out from drilling tool. vnsc3775威尼斯城官网

作者speedyweb 作者speedyweb vnsc3775威尼斯城官网
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