one、definition

two、Production process

1. raw material preparation：Select low-carbon steel or alloy steel that meets the requirements as raw materials。
2. heating：Feed the steel billet into the heating furnace，Heat to the appropriate temperature，Make it achieve sufficient plasticity。
3. rolling：After rough rolling、Intermediate rolling and precision rolling processes，Press the steel billet into the desired channel steel shape through a rolling mill。
4. Cooling and shaping：Hot rolled channel steel needs to undergo cooling treatment，Usually using water cooling or air cooling methods。Afterwards, possible internal stresses and uneven surfaces will be removed through a plastic surgery machine。
5. Inspection and packaging：Strict inspection of finished products，Including visual inspection、chemical composition、Mechanical performance testing, etc。Qualified channel steel will be packaged，To protect it from corrosion and mechanical damage。

three、Performance characteristics

1. high strength：Hot rolled channel steel has high tensile strength and yield strength，Capable of withstanding large loads。
2. Good plasticity and weldability：Easy to process into various shapes，And the welding performance is good，Can meet different engineering requirements。
3. corrosion resistance：After special treatment，Has good corrosion resistance，Suitable for different environments and media。
4. Good material uniformity：High temperature rolling makes the internal structure more uniform，Increased the strength and toughness of the material。
5. Good torsional performance：The cross-sectional shape of channel steel makes it perform excellently in structures that require resistance to torque。

four、application area

1. building structure：Widely used in bridges、building、In building structures such as roof trusses。
2. Machinery manufacturing：Used for manufacturing bearing supports、Mechanical components such as connectors。
3. automobile making：Applied to body structure and chassis components。
4. ship domain：Used for supporting and reinforcing ship structures。

five、standard

six、summarize