ADTO GROUP METAL HARDWARE DIVISION

Project Name:   Beijing National Stadium (Bird's Nest) Location:  Beijing, China Construction Company:  China State Construction Engineering Corporation Building Area:  258,000 square meters Completion Date:  2008 Project Background The Beijing National Stadium, known as the Bird's Nest, was built for the 2008 Beijing Olympic Games. As the main venue for the opening and closing ceremonies, it has become an iconic architectural landmark worldwide. Due to its complex steel structure design, the project required a high standard of bolts and nuts to ensure safety and stability. Applications of Bolts and Nuts Steel Structure Framework: The primary framework of the Bird's Nest utilizes a significant number of high-strength steel components. All connections between steel beams and columns are secured using high-strength bolts (such as M20 and M24 specifications). During construction, torque wrenches were used to check the torque at each connection point to ensure relia...

In the world of mechanical connections, precision and reliability are paramount. One such component that embodies these principles is the   coupling nut , also known as a long nut. This specialized nut plays a critical role in various industries, such as plumbing, HVAC, and automotive, by providing secure and aligned connections between threaded components. What Is a Coupling Nut?   A coupling nut is a type of nut that features threaded openings on both ends. Its unique design includes one end with a right-hand thread and the opposite end with a left-hand thread. This dual-threaded configuration enables the coupling nut to connect two threaded components, such as pipes or rods, simultaneously. The ability to tighten and secure the connection from both ends renders the coupling nut an essential tool for many fastening applications.  Why Use a Coupling Nut?   The primary purpose of a coupling nut is to ensure a robust and stable connection between two threade...