A high-strength bolt is a high-strength bolt, which is a standard part. Under normal circumstances, high-strength bolts can bear greater load than ordinary bolts of the same specification. Mainly used in steel structure engineering. A very important feature of high-strength bolts is that they are limited to single use. They are generally used for permanent connections. Repeated use is strictly prohibited!

The difference between high-strength bolts and ordinary bolts is the difference in material strength.
1. The material of ordinary bolts is made of Q235 (namely A3).
2. The material of high-strength bolts is 45# steel, alloy steel (such as 20MnTiB, 35VB) or other high-quality materials. After being made, heat treatment is carried out to improve the strength.