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CN110761726A
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Steel box body operation platform
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CN110761721A
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Under-pressure operation wellhead platform capable of being used for slope
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A kind of petroleum machinery
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A kind of fast absorbing oil device for emergency processing oil accident
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CN108674813A
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A kind of quick detachable external thread petroleum machinery workpiece protective cover
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CN108612613A
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A kind of fuel oil filtering device for petroleum machinery
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CN108360998A
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Preventer safety switch construction
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CN108301801A
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Steel wire rope conveying-type blanking plug
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CN108331547A
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Blowout-proof operating machine
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CN108360999A
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Gas well blocking device
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CN108343376A
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Hollow screw drilling tool
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CN108443384A
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A kind of oil exploitation drilling platforms damping device
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CN108527163A
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A kind of oil drill rocker inner surface reconditioning cleaner
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CN108339790A
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Helicoid hydraulic motor cleaning device
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CN108253867A
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A kind of measuring chamfer diameters of connectors of oil drilling tool dedicated unit
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CN108343742A
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A kind of combined sealed mechanism of external floating roof tank
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CN108340318A
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A kind of oil drilling tools external screw thread thread protector handling instrument
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CN108405499A
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Helicoid hydraulic motor circulation cleaning device
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CN108340001A
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Automatic correction bracket for machining deep holes of non-magnetic drilling tools
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CN108317251A
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A kind of pressure buffer device of underwater sealing mechanism
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