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83/4" HM952XA 222.2 дюймовий сталевого штампованого нафтової свердловини Pdc дриль біт Pdc біт

Нафтова свердловина pdc свердло API, буріння свердловин, професійний свердло, стандарт свердло алмаз, зроблені в Китаї свердло


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