The differences between steel structure bolts and ordinary structural bolts

Steel structure bolts are mainly used in steel structure projects to ensure the stability and safety of the structure; while common bolts have a wide range of applications and are suitable for general connection needs. Steel structure bolts are made of high-strength steel, with high strength grades and strong load-bearing capacity; while common bolts are usually made of lower-strength steel, with relatively lower strength grades. Steel structure bolts are designed with special shapes and sizes, such as large hexagon bolts, to enhance load-bearing capacity and sealing performance; common bolts have relatively smaller head and thread sizes, and are designed for general use. Steel structure bolts are usually not reusable because they are designed as part of a permanent connection; while common bolts, due to their lower strength and strong disassemblability, can be reused.

Specifically, the differences between steel structure bolts and common bolts include:
Shape and size: The head of large hexagon bolts is larger, with wider hexagonal heads and threads, and a larger diameter. This design makes large hexagon bolts have stronger load-bearing capacity and better sealing performance when connecting. The head and thread sizes of common bolts are relatively smaller, suitable for general connection needs.
Material and strength: Large hexagon bolts are made of high-strength steel, such as 45# steel and 35# steel, which can withstand greater loads without breaking. Common bolts are usually made of materials like Q235 steel, with relatively lower strength grades.
Application scenarios: Large hexagon bolts are widely used in steel structure fields such as buildings, bridges, and towers. Although common bolts are also used to connect components, due to their relatively lower load-bearing capacity and sealing performance, they are usually not suitable for applications with high requirements for connection strength.
Installation requirements: Due to their special shapes and sizes, the installation of large hexagon bolts requires special tools and professional workers. The installation process of common bolts is relatively simple and generally does not require special tools or professional skills.
Reusability: Large hexagon bolts are usually not reusable. Common bolts can be reused.