JIS G3461 Seamless Steel Boiler and Heat Exchanger Tubes
1. Product Description: JIS G3461 Seamless Steel Boiler and Heat Exchanger Tubes are high-quality tubes designed for use in boilers and heat exchangers. These tubes are manufactured from carbon steel and alloy steel, ensuring seamless construction that provides uniform wall thickness and excellent mechanical properties. The JIS G3461 standard specifies the requirements for these tubes, which are intended for high-temperature and high-pressure applications.
2. Product Features:
- Seamless Construction: Offers consistent wall thickness and enhanced safety.
- High-Temperature Resistance: Suitable for applications with demanding thermal conditions.
- Pressure Resistance: Designed to withstand high internal pressures.
- Dimensional Accuracy: Meets strict dimensional and geometrical standards.
- Quality Assurance: Complies with the JIS G3461 standard for reliability.
3. Product Parameters:
| Parameter | Description |
| Standard | JIS G3461 |
| Material | Carbon and Alloy Steel (Seamless) |
| Grade | STBX, STBX-A, STPA, STPA-A, STPI, STPI-A, and others |
| Size Range | Various diameters and wall thicknesses as per JIS G3461 |
| Length | Standard lengths, customizable upon request |
| Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
| Surface Treatment | As-rolled, annealed, or normalized |
4. Mechanical Properties:
| Property | Typical Requirements |
| Tensile Strength | Varies by grade, e.g., STBX: ≥415 MPa (60,000 psi) |
| Yield Strength | Varies by grade, e.g., STBX: ≥205 MPa (30,000 psi) |
| Elongation | Typically ≥20% in 50 mm (2 in) or 4D, whichever is greater |
| Hardness | Varies depending on heat treatment |
5. Chemical Composition:
| Element | Typical Range (%) by Grade (Example: STBX) |
| Carbon | 0.16 - 0.22 |
| Manganese | ≤0.50 |
| Phosphorus | ≤0.025 |
| Sulfur | ≤0.025 |
| Silicon | ≤0.35 |
6. Product Applications:
- Boiler Tubes: Used for steam generation in high-pressure boilers.
- Heat Exchangers: Ideal for various heat exchanger applications in industries such as petrochemical, refining, and power generation.
- Pressure Vessels: Suitable for construction of high-pressure vessels and reactors.
- Superheater and Reheater Tubes: Employed in superheater and reheater sections of power plants.
Product Image
Company Profile
Factory Tour
team introduction
Applications
