Round Cold Drawn Seamless Steel Tube DIN 17175 For Heat Resistant Steels
Seamless Steel Tube: Round Cold Drawn Seamless Steel Tube DIN 17175 For Heat Resistant Steels
Material
The round cold drawn seamless steel tube manufactured according to DIN 17175 standards is primarily composed of carbon and alloying elements that enhance its heat resistance and mechanical properties. This composition ensures its suitability for applications involving high temperatures and corrosive environments.
Specification
The specifications for the cold drawn seamless steel tube as per DIN 17175 are detailed below:
| Property | Specification |
|---|---|
| Outer Diameter | 6mm to 219mm |
| Wall Thickness | 1mm to 30mm |
| Length | 5.8m, 6m, 11.8m, 12m, or as required |
| Steel Grade | 10CrMo910, 13CrMo44, 15Mo3, etc. |
| Manufacturing | Hot-finished or cold-finished process |
Chemical Composition
The chemical composition of the round cold drawn seamless steel tube, with various alloying elements, contributes to its heat resistance and overall performance.
| Element | Composition Range (%) |
|---|---|
| Carbon (C) | 0.08 - 0.15 |
| Silicon (Si) | 0.10 - 0.35 |
| Manganese (Mn) | 0.40 - 0.70 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.020 |
| Chromium (Cr) | 0.80 - 1.25 |
| Molybdenum (Mo) | 0.44 - 0.65 |
Mechanical Properties
The mechanical properties of the cold drawn seamless steel tube play a crucial role in its application under high temperatures and stress conditions.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 450 MPa |
| Yield Strength | ≥ 280 MPa |
| Elongation | ≥ 20% |
| Hardness (HB) | ≤ 197 (for normalized tubes) |
Physical Properties
The physical properties of the round cold drawn seamless steel tube influence its behavior during various processes and its performance in demanding environments.
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1420 - 1460°C |
| Thermal Conductivity | 42.7 W/(m·K) |
| Coefficient of Thermal Expansion | 10.4 × 10⁻⁶/°C |
Process Performance
The cold drawing process employed in manufacturing the seamless steel tube enhances its surface finish, dimensional accuracy, and mechanical properties. This process involves pulling the tube through a die to reduce its diameter and wall thickness.
Application
The round cold drawn seamless steel tube, conforming to DIN 17175 standards, finds extensive application in industries requiring heat-resistant components. Some notable applications include:
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Boilers and Heat Exchangers: These tubes are used to withstand high temperatures and pressures in boiler systems and heat exchangers, ensuring efficient heat transfer.
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Power Generation: They are employed in power plants to construct superheater tubes, reheater tubes, and steam pipelines, where heat resistance is crucial.
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Chemical Processing: The tubes are utilized in chemical plants for conveying corrosive fluids at elevated temperatures, maintaining structural integrity.
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Oil and Gas Industry: In refineries and petrochemical plants, these tubes are utilized for high-temperature applications involving transportation of hydrocarbons.
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Automotive Industry: Certain engine components that experience high thermal stress, such as exhaust systems, can benefit from the heat-resistant properties of these tubes.
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At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
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