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Cold Rolled Seamless Steel Tube and Pipe
Overview
Cold-drawn seamless pipes are usually made of carbon steel and are produced by piercing the hot billet and then rolling it to reduce its diameter and elongate it. The material then passes through a die and a mandrel plug to achieve precise dimensions and specifications, mainly for use in automobiles, trucks, aircraft, and machinery.
Key Features
High dimensional accuracy
High surface finish
Great advantages in the precision machining industry
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 450-630 MPa |
| Yield Strength | 315 MPa |
| Elongation | 14% |
| Hardness (Rockwell) | B65-B85 |
Steel Grade
| Grade | Chemical Composition |
|---|---|
| 10# | C: ≤0.07%, Si: ≤0.37%, Mn: 0.35-0.65%, P: ≤0.035%, S: ≤0.035% |
| 20# | C: 0.17-0.24%, Si: 0.17-0.37%, Mn: 0.35-0.65%, P: ≤0.035%, S: ≤0.035% |
| 45# | C: 0.42-0.50%, Si: 0.17-0.37%, Mn: 0.50-0.80%, P: ≤0.035%, S: ≤0.035% |
| Q345B | C: ≤0.20%, Si: ≤0.55%, Mn: 1.00-1.60%, P: ≤0.035%, S: ≤0.035% |
Application
The Cold Rolled Seamless Steel Tube and Pipe is widely used in various industries due to its excellent mechanical properties and precise dimensions. Some key applications include:
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Automotive Industry: Used in manufacturing precision parts, exhaust systems, and hydraulic systems for automobiles.
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Construction Industry: Employed in the construction of structures such as bridges, highways, and high-rise buildings.
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Oil and Gas Industry: Utilized for drilling and extraction of oil and gas, as well as in the transportation of petroleum products.
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Machinery Manufacturing: Applied in the production of machinery components, such as cylinders, bearings, and hydraulic systems.
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Boiler and Heat Exchanger Industry: Utilized in manufacturing heat exchangers, boilers, and pressure vessels for various industrial processes.
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