GB/T 4171 is a national standard in China, which mainly specifies the technical requirements and testing methods for weather-resistant structural steel. Weather-resistant structural steel is a kind of steel with excellent atmospheric corrosion resistance. By adding specific alloy elements and optimizing the smelting process, it can resist corrosion in outdoor environments and extend its service life.
The main chemical components of GB/T 4171 weather-resistant structural steel include carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), copper (Cu) )wait. The proportion and content of these elements have an important impact on the weather resistance, mechanical properties and process performance of steel.
The production method of GB/T 4171 weather-resistant structural steel mainly involves key processes such as steelmaking, continuous casting, and rolling, as well as corresponding quality control measures. First, during the steelmaking process, the raw material composition and smelting process are reasonably controlled to ensure that the steel obtains the required chemical composition. During the continuous casting process, the casting speed, cooling conditions and dimensional accuracy of the steel billet need to be controlled to ensure that the internal quality and organizational structure of the steel billet meet standard requirements. During the rolling process, the shape, size and mechanical properties of the steel are controlled by adjusting parameters such as rolling temperature, reduction, and rolling speed.
Weather-resistant structural steel under the GB/T 4171 standard is mainly used to manufacture hot-rolled and cold-rolled steel plates, steel strips and section steel with atmospheric corrosion resistance. These products are widely used in a variety of fields, including but not limited to vehicles, pidges, containers, buildings, towers and other structures, and are used to make welded structural parts, such as bolted, riveted and welded structural parts. In general, GB/T 4171 weather-resistant structural steel is widely used in many fields. Its excellent corrosion resistance and good welding performance make it an important material for building durable and stable structures.
