Most of the bolt balls are used for the net structure, the main structural characteristics are: a ball has a number of holes with internal wires, used to connect a number of rods at a point.
Bolt ball is mainly used in downhole oil production device without tubing, casing explosion diameter expander, tubing diameter gauge and other fields. It is also applied to the connection between the bar and the bar in the steel frame.
The characteristics of
(1) strong adaptability, no additional node eccentricity.
(2) avoid a lot of on-site welding workload.
(3) convenient transportation and installation.
(4) more parts and components, high processing accuracy requirements.
(5) the process is complex and the manufacturing cost is high.
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