Parameter
|
Standard |
GB22795 |
|
Name |
Expansion bolts |
|
Material |
carbon steel and alloy steel |
|
Grade |
4.8 grade, 5.8 grade, 8.8 grade |
|
Nominal Diameter |
M2-M30 |
|
Pitch |
0.4-3.5 |
|
Surface treatment |
ZP,YZ |
|
Alias |
Expansion bolts, Expansion nails, Expansion screws |
Expansion bolts consist of several components, including countersunk head bolts, expansion tubes, flat washers, spring washers and hexagonal nuts, which work together to realize the fixing function. It generates strong friction through the tight extrusion of the expansion tube and the hole wall, and can provide reliable anchorage to withstand many forms of external forces. It can be applied in different scenarios, such as fixing heavy equipment or resisting the action of wind on billboards. Expansion bolts are effective in maintaining the stability of the object to be fixed and ensuring safety.
Due to the simple and quick installation process and high installation efficiency, it can greatly save labor costs in large-scale installation projects. For example, in a large shopping mall decoration project, if the expansion bolts are used to fix various decorative materials and shelves, the installers can complete a large number of installation work in a short time, reducing the number of manual labor hours, thus reducing the overall installation costs. The fixing effect of expansion bolts is greatly affected by the condition of the substrate, so they need to be selected and adjusted according to the actual situation during installation.


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