GB/T 3087 Seamless Boiler Tubes
Material Specification
GB/T 3087 seamless boiler tubes are designed for manufacturing high-quality seamless steel pipes used in low and medium-pressure boilers. These tubes are essential for ensuring the safe and efficient operation of boilers, which are critical components in various industrial applications.
Key Features
High Quality: GB/T 3087 tubes are known for their excellent quality, ensuring reliability and longevity in boiler applications.
Versatility: Suitable for both low and medium-pressure boilers, making them versatile for various industrial uses.
Corrosion Resistance: These tubes offer good resistance to corrosion, which is crucial for maintaining the integrity of the boiler system.
Heat Resistance: Designed to withstand high temperatures, ensuring efficient heat transfer and operation.
Precision Manufacturing: Produced with precise dimensions and tolerances, ensuring a perfect fit and optimal performance.
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.17 - 0.24 |
| Silicon (Si) | 0.17 - 0.37 |
| Manganese (Mn) | 0.35 - 0.65 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | ≤ 0.25 |
| Nickel (Ni) | ≤ 0.25 |
| Copper (Cu) | ≤ 0.25 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 410 - 550 |
| Yield Strength (MPa) | ≥ 235 |
| Elongation (%) | ≥ 24 |
| Hardness (HB) | ≤ 156 |
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 7.85 |
| Melting Point (°C) | 1420 - 1460 |
| Thermal Conductivity (W/m·K) | 48.3 |
| Specific Heat Capacity (J/kg·K) | 460 |
Process Performance
| Performance | Description |
|---|---|
| Weldability | Good |
| Machinability | Moderate |
| Formability | Excellent |
| Heat Treatment | Normalizing |
Steel Grade
GB/T 3087 seamless boiler tubes are typically produced in two grades:
10#: This grade is known for its excellent machinability and weldability, making it suitable for various applications where forming and welding are required.
20#: Offers higher strength compared to 10#, making it ideal for applications requiring enhanced mechanical properties.
Application
GB/T 3087 seamless boiler tubes are widely used in:
Boiler Manufacturing: Essential for constructing low and medium-pressure boilers.
Heat Exchangers: Used in heat exchanger systems due to their excellent thermal conductivity.
Petrochemical Industry: Utilized in various petrochemical processes where heat resistance is crucial.
Power Plants: Integral in power generation systems for efficient heat transfer.
Possible Alternative Grades
While GB/T 3087 is a popular choice, other standards and grades can be considered based on specific requirements:
ASTM A106: A standard specification for seamless carbon steel pipes for high-temperature service.
DIN 17175: A German standard for seamless tubes used in boiler construction.
EN 10216-2: A European standard for seamless steel tubes for pressure purposes.
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