Instructions for use of threaded drill rods Factory ...
2021-7-27 · In order to use the threaded connection drill rods normally and ensure the normal failure mode (thread wear, fatigue fracture), the following points must be paid attention to: 1. Make sure that the thread of the drill rod and the connecting sleeve are well matched (preferably provided by the same manufacturer); the specifications (diameter of the drill rod) match: large specifications and high ...
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