1. Hidden connection.
The concealed connection is mainly used inside the profile to play the role of concealment and beauty. Half round head bolts and hexagon socket bolts are mainly used. Before connection, it is necessary to punch and tap the predetermined position of the profile, and then directly tighten it with bolts.
2. Embedded connection.
Embedded connection is mainly to put the bolt and nut into the profile groove, and then tighten the connection. The commonly used bolts and nuts for embedded connection include T-type bolt, T-type nut, slider nut, elastic nut and spring nut. It can automatically position and lock during installation, and the installation process is simple and convenient.
3. External connection.
In addition to the concealed connection and embedded connection mentioned above, there are also bolts and nuts installed outside the profile or accessories, that is, the appearance of bolts and nuts can be clearly seen from the appearance. The commonly used bolts and nuts include flange nuts, square nuts, flat machine bolts, round stud bolts, etc. During the connection process, the wrench can be used to realize the fastening function from the outside, which is simple and convenient, but the appearance is not beautiful.
The above is what we are talking about. If you don't understand anything, please leave us a message.
