Top Quality Double Hex Bolt - Carriage Bolt, Square Neck Round Head Carriage Bolt Gr4.8 8.8 Full Thread Cup Head Round Head Hot Dipped Galvanized Carriage Bolts – Changlan

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Generally speaking, a bolt is used to connect two objects, usually through a light hole. It needs to be used in conjunction with a nut. Tools are usually spanners. The head is hexagonal head more, general larger. Carriage bolts are used in the groove. The square neck is stuck in the groove during installation to prevent the bolt from turning and carriage bolts can move in parallel in the groove. Because of the round head of the carriage bolt, there is no design of available assistance tools such as cross grooves or inner hexagons, which can also play an anti-theft role in the actual connection process

Company introduction

Handan Chang Lan Fastener Manufacturing Co., Ltd. formerly Yongnian Tiexi Changhe fastener factory was large-scale standard fastener manufacturer in Yongnian District. The company is located in standard fastener distribution center of Hebei Yongnian, covering an area of 3,050 square meters, was close to Tianjin Port and Qingdao ports, export is very convinedtly. The company has multi position cold heading machine, model 12b, 14b, 16b, 24b, 30b, 33b; has hot forging machine, model has 200 tons, 280 tons, 500 tons, 800 tons;

Has a variety of supporting equipment, including rolling machine, rolling machine, oil press, etc. for bolts, nuts, double stud bolts , foundation bolts and complete product testing equipment. With an experienced technical research and development team, high-quality management personnel and spacious production environment.

Now we know a lot of parts in order to be able to have a fixed effect better, often need to use up all kinds of fixed with screws or bolts, and now technology and has been in constant progress of science and technology, and under such circumstance, we have appeared more and more special screws, such as our carriage screws and carriage bolts,

With the continuous improvement of carriage screw factory for this kind of products, they have made greater changes in corrosion resistance and strength, so in this case, our products are also better used in many high-end equipment connections, and its application scope is still expanding.

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