GB/T5310 20G High Pressure Boiler Seamless Steel Pipe: A Key Component for Power Generation
1. Product Description: GB/T5310 20G High Pressure Boiler Seamless Steel Pipe is a type of carbon steel pipe designed for use in high-pressure boiler systems. These pipes are manufactured to the GB/T5310 standard, which specifies the requirements for seamless steel pipes suitable for high-pressure service. The '20G' grade indicates a specific level of mechanical properties that provide the necessary strength and durability for boiler applications.
2. Product Parameters:
Parameter | Description |
Grade | 20G |
Material | Carbon Steel (Seamless) |
Standard | GB/T5310 |
Size Range | Various diameters and wall thicknesses as per GB/T5310 |
Length | Standard lengths, customizable upon request |
Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
Surface Treatment | As-rolled, annealed, or normalized |
3. Mechanical Properties:
Property | Requirement |
Tensile Strength | ≥410 MPa (59,500 psi) |
Yield Strength | ≥240 MPa (34,700 psi) |
Elongation | ≥20% in 50 mm (2 in) or 4D, whichever is greater |
Hardness | Typically Rockwell B 90 max for tubes ≤ 2 in (50 mm) in diameter |
4. Chemical Composition:
Element | Typical Range (%) |
Carbon | 0.17 - 0.24 |
Manganese | 0.35 - 0.65 |
Phosphorus | ≤ 0.025 |
Sulfur | ≤ 0.025 |
Silicon | 0.17 - 0.37 |
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