Successful Delivery of a Batch of Air Preheater Tubes Order
We are thrilled to announce the successful delivery of a batch of 09CrCuSb seamless steel tubes, specifically designed for air preheater applications. This milestone underscores our commitment to delivering high-quality, durable, and efficient solutions tailored to industrial applications’ demanding requirements.
What is 09CrCuSb Steel?
09CrCuSb, also known as ND steel, is a low-alloy steel that offers exceptional resistance to low-temperature sulfuric acid dew point corrosion. This makes it ideal for environments where corrosion is a significant concern, such as air preheaters, economizers, and other heat exchange systems in power plants, chemical industries, and beyond.
The unique composition of 09CrCuSb steel, which includes chromium (Cr), copper (Cu), and antimony (Sb), provides enhanced corrosion resistance, particularly in environments where sulfur-containing flue gases are present. This ensures a longer service life and reduced maintenance costs for critical equipment.
Why Choose Seamless Tubes for Air Preheaters?
Seamless steel tubes are preferred in air preheater applications due to their superior strength, uniformity, and reliability. Unlike welded tubes, seamless tubes are free from weld seams, which can be potential weak points under high pressure and corrosive conditions. This makes them an excellent choice for ensuring the integrity and efficiency of air preheaters, which play a crucial role in improving the thermal efficiency of industrial boilers by recovering heat from flue gases.
Key Benefits of 09CrCuSb Seamless Steel Tubes:
1. Exceptional Corrosion Resistance: The 09CrCuSb material is specifically designed to withstand harsh environments, particularly those involving sulfuric acid dew point corrosion. This ensures a longer lifespan and reduced maintenance downtime.
2. High Thermal Efficiency: The seamless design and superior material properties contribute to efficient heat transfer, enhancing the overall performance of air preheaters.
3. Durability and Reliability: Seamless tubes offer excellent mechanical properties, including high tensile strength and resistance to thermal stress, making them suitable for high-temperature and high-pressure applications.
4. Cost-Effectiveness: 09CrCuSb seamless tubes offer a long-term cost-effective solution by reducing the frequency of replacements and maintenance.
Applications of 09CrCuSb Seamless Steel Tubes:
Air Preheaters: These are used in power plants and industrial boilers to recover heat from flue gases, improving overall thermal efficiency.
Economizers: Enhance the efficiency of boiler systems by preheating feedwater using waste heat.
Heat Exchangers: Ideal for applications requiring resistance to corrosive environments.
Chemical Processing: Suitable for equipment exposed to corrosive chemicals and gases.
Technical Specifications of 09CrCuSb Steel:
Composición química:
– Carbon (C): ≤0.12%
– Silicon (Si): 0.20-0.40%
– Manganese (Mn): 0.35-0.65%
– Phosphorus (P): ≤0.030%
– Sulfur (S): ≤0.030%
– Chromium (Cr): 0.70-1.10%
– Copper (Cu): 0.25-0.45%
– Antimony (Sb): 0.04-0.10%
Propiedades mecánicas:
– Tensile Strength: ≥390 MPa
– Yield Strength: ≥245 MPa
– Elongation: ≥25%
Resistencia a la corrosión:
– Excellent resistance to sulfuric acid dew point corrosion, making it ideal for use in environments with sulfur-containing flue gases.
Cumplimiento de normas:
The 09CrCuSb steel tubes we delivered comply with the GB/T 150.2-2011 standard, which specifies the materials used in pressure vessels. This standard ensures that the materials used in pressure vessels meet stringent requirements for safety, performance, and reliability.
Key Points from GB/T 150.2-2011:
1. Heat Treatment: The steel tubes are delivered in a normalized heat treatment condition, ensuring optimal mechanical properties and corrosion resistance.
2. Mechanical Performance: The mechanical properties of the tubes, including tensile strength, yield strength, and elongation, are strictly controlled to meet the standard’s requirements.
3. Corrosion Testing: Each batch of tubes undergoes rigorous corrosion testing. Two 10 mm long samples are taken from two different tubes and immersed in a 50% H₂SO₄ solution at 70°C ± 2°C for 24 hours. The average corrosion rate must not exceed 80 g/m²·h or 140 g/m²·h, as specified in the purchase contract.
4. Additional Requirements: Any unspecified requirements follow the guidelines outlined in GB 9948, ensuring comprehensive quality control.
Scope of GB/T 150.2-2011:
Applicable Range: The standard covers materials for pressure vessels with design temperatures ranging from -253°C to 800°C and design pressures up to 35 MPa.
Exclusions: The standard does not apply to refrigeration and paper industry containers, glass-lined vessels, simple pressure vessels, and other specific exclusions outlined in TSG R0004.
Our Commitment to Quality:
We pride ourselves on delivering products that meet the highest industry standards. Our 09CrCuSb seamless steel tubes undergo rigorous quality control processes, including material testing, dimensional inspections, and performance evaluations, to ensure they meet our clients’ specific needs.
The successful delivery of this batch of 09CrCuSb seamless steel tubes marks another step forward in our mission to provide innovative and reliable solutions for our clients. We remain committed to advancing our technology and expanding our product offerings to meet the industry’s evolving demands.
If you have any questions about our 09CrCuSb seamless steel tubes or would like to discuss how they can benefit your specific application, please don’t hesitate to contact us at [email protected]. Our team of experts is here to help you find the best solutions for your needs. We look forward to continuing to serve you with high-quality products and exceptional service. Thank you for choosing GOLDEN SUNBIRD as your trusted partner in industrial solutions.
