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Expandable tubular patch system is consist of firing room, expansion head, centre rod, Expandable tubular, sealing rubber, expansion pipe joint, etc.
Fluid through the center rod transmission pressure to launch room, reach a critical pressure expansion head move up, expand and sealing strip compression suspension on the basis of casing.
Expandable tubular anchor, expansion head under the effect of high pressure liquid, the force expansion pipe straight upward. Expansion process can separate hydraulic expansion, also can liD alone, also can be combined hydraulic lift, finished until inflation subsidies.
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