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Bolts made of high strength steel or requiring a large preload can be called high strength bolts. High strength bolts are mainly used for connecting Bridges, rails, high pressure and ultra high pressure equipment. The fracture of this kind of bolt is brittle fracture. High strength bolts used in ultra-high pressure equipment need to be prestressed to ensure the sealing of containers. Grade 12.9 HEX Bolt is a grade of high strength bolt with higher strength. Many customers will also choose Grade 12.9 HEX Bolt because of hardness.
Our company is a professional manufacturer of high-strength bolts. Since its establishment, we have been adhering to the principle of good faith and cooperation. We have established cooperative relations with many customers at home and abroad, and welcome new and old customers to negotiate cooperation.
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