GB/T 24591 SA556B2 Hot Rolled Seamless Steel Tubes for High-Pressure Feedwater Heater
Material
The material used for manufacturing GB/T 24591 SA556B2 hot rolled seamless steel tubes for high-pressure feedwater heater is primarily carbon steel.
Specification
The specifications for GB/T 24591 SA556B2 hot rolled seamless steel tubes for high-pressure feedwater heater are as follows:
- Outer Diameter: 15.9mm - 38.1mm
- Wall Thickness: 2.77mm - 5.16mm
- Length: 5000mm - 13000mm
- Standard: GB/T 24591
Key Features
The key features of GB/T 24591 SA556B2 hot rolled seamless steel tubes are:
- High-pressure resistance: These tubes are specifically designed to withstand high-pressure conditions in feedwater heaters.
- Seamless construction: The tubes are produced using a seamless manufacturing process, ensuring a smooth and uniform internal surface without any welding.
- Hot rolled: The tubes are made by hot rolling, which enhances their strength and ensures a sturdy structure.
- Precise dimensions: GB/T 24591 SA556B2 tubes are manufactured with precise outer diameter, wall thickness, and length to meet the required specifications.
Chemical Composition
| Chemical Elements | Mass Percentage |
| Carbon (C) | 0.18-0.23 |
| Silicon (Si) | 0.15-0.35 |
| Manganese (Mn) | 0.60-1.00 |
| Phosphorus (P) | 0.030 |
| Sulfur (S) | 0.030 |
| Chromium (Cr) | 0.90-1.20 |
| Molybdenum (Mo) | 0.15-0.25 |
Mechanical Properties
The mechanical properties of GB/T 24591 SA556B2 hot rolled seamless steel tubes are as follows:
| Properties | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| Minimum Value | 565 | 410 | 21 |
| Maximum Value | 705 | 515 | 30 |
Steel Grade
The steel grade for GB/T 24591 SA556B2 hot rolled seamless steel tubes is SA556B2.
Application
These hot rolled seamless steel tubes are specifically used in high-pressure feedwater heaters. They are suitable for applications where resistance to high pressure, corrosion, and heat is required. Feedwater heaters are crucial components in power plants and other industrial facilities where heat exchange between steam and water takes place.
Possible Alternative Grades
In addition to GB/T 24591 SA556B2, other potential alternative grades that may be considered for the same application are SA210A1, SA210C, SA213T11, SA213T22, and SA213T91. These alternative grades offer similar characteristics and can be used as substitutes depending on the specific requirements and constraints of the application.
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