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Electromagnetic testing method of ferromagnetic steel wire rope GBT 21837-2008
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Non destructive testing instrument technical specification for steel wire rope electromagnetic detector GBT 26832-2011
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Inspection, maintenance, repair and use of drilling and workover derrick and substructure SYT6408-2004
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Test and evaluation method for bearing capacity of derrick and substructure of drilling rig and workover rig SY-T 6326-2008
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Recommended Practice for coiled tubing operations in oil and gas wells SYT 6698-2007
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DS-1 vol 4 drilling specialty
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Code for acceptance of new drilling tools QSY TZ 0214-2008
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