Company Dynamics

What is the market demand for fasteners after the epidemic? See what these companies say.

In recent years, China's fastener industry has maintained rapid development, and its output, sales and nationalization have continued to increase. Fasteners are widely used in various fields such as machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools and instruments, and are closely related to the development of the equipment manufacturing industry. With the stable development of my country's economy, the demand for the downstream industry of fasteners continues to increase, and the strong support of national policies, the size of the fastener market will continue to rise. In 2019, the overall market size of China's fasteners will reach 140.2 billion billion yuan.

2020-10-17

Fracture Failure Analysis of 10.9 Grade High Strength Bolt

The bolt fracture morphology 1.2 the location and state of the crack shows that the fracture is located between tooth 1 and tooth 2, and is concentrated at the root of the load-bearing surface of tooth 1. Looking up the assembly drawing, it can be seen that the threads of the 3rd to 6th teeth are just located at the counterbore of the mating part, and the 2nd

2020-09-19

China will further reduce the cost of smart bolts

The China Academy of Engineering Physics has brought smart bolts that can detect preload. Fasteners such as bolts have a yield point, which is related to the state of machine operation, the reliability of buildings and even the safety of people's lives and property for precision instruments, aircraft and important buildings. Therefore, in aviation, aerospace, radar, heavy industry and other fields, bolts that can detect preload are gradually popularized.

2019-09-11

Common standards and types of 12.9 grade screws

Common standards and types of 12.9-grade screws can be divided into 12.9-grade external hexagon screws, 12.9-grade hexagon socket head screws (cup heads), 10.9-grade countersunk head hexagon socket screws (flat cups), 10.9-grade semicircular head hexagon socket screws (round cups), 12.9-grade set screws (machine meters), 12.9-grade hexagon socket plug screws and other types according to items. According to the thread is divided into coarse teeth, fine teeth, metric system, imperial system, American system, etc. Grade 12.9 is a relatively hard variety of screws, with high hardness and tensile strength. Its Rockwell hardness (HRC) can reach 39-44, and its tensile strength can reach 122

2019-01-05