Cold rolled seamless steel tube pipe
Seamless Steel Pipe
Smooth surfaces
Precise dimensions
Good performance
Variety of cross-section shapes
High metal utilization
01
Material
Cold rolled seamless steel pipe is mainly made of carbon steel, alloy steel and stainless steel. Among them, carbon steel is a cost-effective material with high strength, good abrasion resistance and cheap price. Alloy steel added some alloy elements, such as chromium, molybdenum, etc., can improve its corrosion resistance and high-temperature resistance. Stainless steel has good corrosion resistance and aesthetics.
02
Standard
The specifications of cold rolled seamless steel tube is generally labeled according to the outer diameter and wall thickness. The common outer diameters are φ6mm, φ8mm, φ10mm, φ12mm, φ14mm, φ16mm, φ18mm, φ20mm and so on, and the wall thicknesses are usually 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm and so on. Of course, it can also be customized according to customers' requirements.
03
Mechanical Property
The mechanical properties of cold rolled seamless steel pipe include tensile strength, yield strength, elongation and other indicators. In general, the tensile strength is required to be above 400MPa, the yield strength is above 240MPa, and the elongation is above 15%. These indicators can ensure the durability and safety of the pipe in the process of use.
Production process
1. Material selection and preparation: Select high-quality steel as raw material, and carry out cutting, descaling and other treatments to ensure the quality and cleanliness of the raw material.
2. Forming and welding: The treated steel is formed and processed, and continuously rolled through cold rolling mill to form a seamless steel pipe. The forming process requires attention to the control of parameters such as temperature, pressure and rolling speed to ensure the quality and precision of the steel pipe.
3. Heat treatment and cooling: The formed steel pipe needs heat treatment to improve its mechanical properties and corrosion resistance. Common heat treatment methods include annealing, normalizing, quenching and so on. After heat treatment, the steel pipe needs to be cooled to prevent deformation and cracking.
4. Inspection and cutting: The treated steel pipe is subjected to quality inspection, including appearance inspection, size measurement, non-destructive testing and so on. After qualified, they are cut as needed to meet different lengths.
USE
1. Fluid Conveying: Cold rolled seamless steel pipe is an important piping material for conveying fluids, such as conveying water, oil and natural gas. Due to its seamless structure, it makes the fluid flow more smoothly in the pipeline and reduces the resistance and energy loss of the fluid.
2. Structural support: Because of its high strength and good plasticity, cold rolled seamless steel pipe is often used as a support material for various structures, such as bridges, buildings, pylons and so on. Its excellent mechanical properties and stability make the structure more solid and reliable.
3. Mechanical Manufacturing: In the field of mechanical manufacturing, cold rolled seamless steel pipe also plays an important role. It can be used as the raw material of mechanical parts, such as shafts, sleeves, bearings, etc., providing a solid material foundation for mechanical manufacturing.
In conclusion, as an important metal material, cold rolled seamless steel pipe has a wide range of applications in various fields. Understanding its role and use, production process and precautions is important for the correct use and maintenance of steel pipe.
