| Payment Type: | D/P,L/C,T/T |
| Incoterm: | FOB,CFR,CIF,EXW |
| Transportation: | Ocean,Land,Express |
| Port: | Tianjin,Qingdao,Shanghai |
Model No.: GB 5310 20G
Standard: Gb
Material: Q195-Q345, A53-A369, 10#-45#, Cr-Mo Alloy, Mn-V Alloy, Crni Alloy
Section Shape: Round
Place Of Origin: China
Application: Fluid Pipe, Boiler Pipe, Structure Pipe, Hydraulic Pipe
Production Process: Hot Rolled
Certification: Ce
Special Tube: Thick Wall Pipe
Whether Alloy: Is Alloy
Tolerance: ±1%
Category: Seamless Steel Pipe
Processing Service: Bending, Decoiling, Punching, Cutting
| Selling Units | : | Ton |
| Package Type | : | Standard marine packaging, or as required by the customer |
| Picture Example | : |
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GB 5310 20G High Pressure Boiler Tubes
GB 5310 20G high pressure seamless boiler tubes are a type of steel tube designed for use in high-pressure and high-temperature environments.
A 20G Seamless Steel Pipe is a pipe made from 20G steel, known for its high temperature resistance and efficient heat transfer properties.
Is our main production of steel, we can provide 20G Seamless Pipe with high quality and competitive price. Here to introduce you to our 20G seamless pipe basic chemical properties and mechanical properties.
The GB 5310 standard applies to seamless pipes for steam boilers and pipelines that are high pressure and above. The 20G Steel Pipe is the national standard steel grade for GB 5310. The foreign corresponding brand is Germany ST45.
High-pressure boiler tubes are a type of seamless steel pipe. They have very high requirements on the tightness of the steel pipes. The production method is the same as that of seamless tubes, and the requirements are basically the same.
The 20G seamless steel pipe boasts several characteristics that make it an indispensable component in industrial applications:
High Temperature Resistance: The 20G steel's composition allows the pipe to withstand elevated temperatures, making it suitable for applications involving heat transfer and energy conversion.
Seamless Design: The seamless manufacturing process ensures uniformity and eliminates the risk of weak points or leaks, enhancing the overall integrity of the pipe.
Efficient Heat Transfer: The properties of 20G steel facilitate efficient heat exchange, making the pipe ideal for transferring thermal energy between fluids.
Corrosion Resistance: The steel's composition provides inherent resistance to corrosion, extending the pipe's lifespan and reliability in various environments.
Enhanced Efficiency: The exceptional heat transfer properties of 20G steel contribute to efficient energy conversion, ensuring optimal performance in boilers and heat exchangers.
Reliability: The seamless design and high tensile strength of 20G steel pipes enhance their reliability and safety in demanding industrial environments.
Long Service Life: The corrosion-resistant nature of 20G steel extends the service life of the pipes, reducing maintenance requirements and downtime.
20G is a type of high-quality carbon structural steel, commonly used in the production of boiler tubes and pressure vessels due to its excellent mechanical properties and heat resistance.
20G is the steel material of GB 5310- 2008. GB 5310- 2008 standard is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines.
GB 5310 is a Chinese standard that outlines the specifications for seamless steel tubes used in high-pressure boilers. The designation "20G" refers to the material grade of these tubes, indicating that they are made from 20G steel, a low-carbon steel known for its excellent heat transfer properties and high tensile strength.
| Chemical elements | Data |
| Carbon | 0.17-0.23 |
| Silicon | 0.17-0.37 |
| Manganese | 0.35-0.65 |
| Phosphorus(max) | 0.03 |
| Sulfur(max) | 0.03 |
| Chromium(max) | 0.25 |
| Molybdenum(max) | 0.15 |
| Cuprum(max) | 0.2 |
| Nickel(max) | 0.25 |
| Vanadium(max) | 0.08 |
Positive Material Identification (PMI) test is performed on GB5310 20G steel to determine the composition of the material and ensure that it meets the specified chemical composition requirements.
| Properties | Data |
| Yield Strength (Mpa) | 410-550 |
| Tensile Strength (Mpa) | 245 |
| Elongation (%) | 22 |
| W.T.(S) | Tolerance of W.T. | |
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
The versatile nature of 20G seamless steel pipes makes them suitable for a range of industrial applications:
Boilers: In the power generation sector, 20G pipes are used as superheater tubes, reheater tubes, and waterwall tubes in boilers, facilitating the exchange of heat and steam generation.
Petroleum Industry: The pipes find application in petroleum refineries for transporting high-temperature and high-pressure fluids.
Considerations for Usage
When incorporating 20G seamless steel pipes into industrial systems, the following factors should be considered:
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