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Casing Dog

1、套管打捞矛

...水力打捞矛 wash down spear套管打捞矛 casing dog; casing ear; tricasing spear下冲打捞矛 jar down spear ...

2、捞管器

捞管器 casing catcher; casing dog; mandrel socket; tube extractor; tubing catcher

bull dog casing spear套管打捞矛

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