DETAILS, FICTION AND TYPES OF SUB COLLARS

Details, Fiction and types of sub collars

A Totco ring is not really a sub but is bundled in this article for ease. A small insert is put In the drill string amongst a pin as well as a box relationship.So what I would love to do is return to People roots, speak about the origins of collars, their types, the way to utilize them in scenes and basic safety problems. FOR Instructional Needs ON

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