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Yongding Yongding adicionou um novo artigo Outro
2020-12-21 07:07:12 -

Coating thickness of heavy hex bolts
Bolts that are made of high-strength steel or require a larger pre-tightening force can be called heavy hex bolts. High-strength bolts are mostly used for the connection of bridges, steel rails, high pressure and ultra-high pressure equipment. The fracture of this kind of bolt is mostly brittle fracture. High-strength bolts applied to ultra-high pressure equipment need to be prestressed in...

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