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Compact ultrahigh pressure oil (gas) production wellhead device
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CN111963105A
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Ultrahigh pressure kill manifold with throttling pipeline
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Piston type pressure gauge buffer
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Lifting type check valve capable of reducing water hammer damage
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Connecting pipeline between ultrahigh pressure fracturing manifold and wellhead device
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Economical and practical hydraulic driving mechanism for plug valve
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Ultrahigh-pressure sand-proof plug valve with easily replaced core
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Driving mechanism for hydraulic and manual rapid conversion of fracturing flat valve
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Manual driving mechanism for plug valve
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A kind of oil field valve heating and thermal insulation set
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A kind of Combined casing head abrasionproof bushing takes out tool
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A kind of novel rotating wheel formula manual throttle valve
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Special cleaning head for field installation of wellhead equipment
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Split hand wheel and hydraulic drive flat valve
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Overlap-type hand wheel and hydraulic driving flat valve
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Manual two-section hidden-rod integrated flat valve
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Single-stage casing head with field-replaceable hanger
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Universal measuring tool and measuring method of diameter of trapezoid packing ring groove
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Tangential vortex annulus fracturing wellhead device
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Fracturing-extraction well head device with combined sealing, directional separation and abrasion resistance
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