Overview of hot-rolled seamless pipe
Hot-rolled seamless pipe is a widely used pipe material. Its manufacturing process adopts hot rolling processing technology, which can meet the requirements of high strength, high precision and high heat resistance. Hot-rolled seamless pipe is widely used in petroleum, chemical industry, aviation, aerospace, nuclear energy, transportation, construction and other fields due to its characteristics of no joints, high strength, pressure resistance and corrosion resistance.
Dimensions and specifications of hot-rolled seamless pipe
The dimensions and specifications of hot-rolled seamless pipe are generally classified according to three aspects: outer diameter, wall thickness and length. The following are the commonly used dimensions and specifications of hot-rolled seamless pipe:
1. Outer diameter
The outer diameter of hot-rolled seamless pipe is generally between 21.3mm and 660mm, and the commonly used specifications are φ57mm, φ76mm, φ89mm, φ108mm, φ159mm, φ219mm, φ273mm, φ325mm, φ377mm, φ426mm, φ508mm, φ610mm, etc.
2. Wall thickness
The wall thickness of hot-rolled seamless pipes is generally between 2.11mm and 60mm, and the commonly used specifications are SCH40, SCH80, SCH160, XXS, etc.
3. Length
The length of hot-rolled seamless pipes is generally 6m~12m, and can also be customized according to customer needs.
Features of hot-rolled seamless pipes
1. No joints
After processing, the hot-rolled seamless pipe has no welded joints on its surface, which makes it more pressure-bearing and corrosion-resistant.
2. High strength
The strength of hot-rolled seamless pipes is generally about 30% higher than that of welded steel pipes, which can meet the requirements of high strength, high precision and high heat resistance.
3. Pressure resistance
The hot-rolled seamless pipe has a strong pressure-bearing capacity and is suitable for conveying high-temperature and high-pressure fluids.
4. Corrosion resistance
The surface of the hot-rolled seamless pipe can effectively prevent corrosion after chemical treatment.
Application fields of hot-rolled seamless pipes
Hot-rolled seamless pipes are widely used in the fields of petroleum, chemical industry, aviation, aerospace, nuclear energy, transportation, construction, etc. They are mainly used to transport fluids such as oil, natural gas, water, and various chemical fluids and high-temperature fluids such as geothermal and nuclear energy. In addition, hot-rolled seamless pipes are also widely used in the manufacture of mechanical parts, bicycle frames, high-pressure steam boilers, etc.
Conclusion
Hot-rolled seamless pipes are a kind of pipe with wide application. Its size specifications are generally classified according to the outer diameter, wall thickness and length. Hot-rolled seamless pipes have the characteristics of no joints, high strength, pressure resistance, and corrosion resistance. They are suitable for the fields of petroleum, chemical industry, aviation, aerospace, nuclear energy, transportation, construction, etc., and are a widely used pipe.
