钻杆接头的各种纵向开裂属于低应力脆性断裂。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
本实用新型提供了一种连接电阻低,使用方便的低压接头。
The utility model provides a low-voltage joint with low connection resistance and easy use.
本实用新型提供了一种连接电阻低,使用方便的低压接头。
The utility model provides a low-voltage joint with low connection resistance and easy use.
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