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China
2010
High strength bolt: grade 8.8, grade 10.9 and grade 12.9. Haoheng one-way bolt is a closed bolt assembly composed of standard screw, special sleeve and conical nut. The conical surface of the nut is embedded and clamped with the sleeve slot to ensure the fixation of the nut and the sleeve, so that the nut and the bolt can be quickly tightened only from the outside. Furthermore, it can also play a guiding role, cooperate with the conical surface of the nut, and further move the nut toward the sleeve to spread one end of the sleeve outward, so as to further ensure the stability and strength of the connection structure and avoid looseness of the connection. Application scenarios: beam column connection, curtain wall and steel structure connection, secondary structure and main frame connection, steel truss chord and web member connection, steel column base connection, steel frame connection of glass roof, safety barrier and main steel beam connection of walkway. Patent No.: zl202022072980. X
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