High / Low Pressure Feedwater Heater U-Tubes
High / Low Pressure Feedwater Heater U-Tubes
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Product Information
Product Overview
Our High and Low Pressure Feedwater Heater U-Tubes are purpose-built for large-scale thermal power generation systems. Specially bent into various standard radii to match the assembly structure of power plant feedwater heaters, these U-shaped heat exchange tubes feature a typical design of small diameter, thin wall and extra-long length, which perfectly meets the intensive heat transfer demands of high-efficiency thermal power units.
Manufactured with precision bending and stress relief treatment, our U-tubes deliver uniform bending radius, stable structural performance and zero deformation. They are capable of enduring long-term cyclic changes of temperature and pressure in rigorous thermal power working conditions, effectively avoiding fatigue cracking, leakage and fouling problems. With reliable durability and consistent heat transfer efficiency, these tubes ensure safe, stable and continuous operation for power plant heater systems.
Material Grades
We provide mature and widely applied austenitic stainless steel grades dedicated for feedwater heater U-tubes:
TP304, TP304L, TP316, TP316L
These grades exhibit excellent bendability, weldability, high-temperature stability and outstanding resistance to water medium corrosion. They are the most ideal and mainstream materials for thermal power feedwater heater equipment, fully adapting to long-cycle and high-load operating environments of power generation units.
Production Standards
Our feedwater heater U-tubes are strictly produced and inspected in accordance with ASME SA688, the authoritative international standard for welded austenitic stainless steel tubes for feedwater heaters. To satisfy diversified project requirements, we also support customized production in accordance with customers’ enterprise standards and technical agreements after mutual negotiation.
Key Features & Advantages
Custom U-Bending Processing: Multiple bending radii available to fit high-pressure and low-pressure heater assembly requirements, with high dimensional accuracy and perfect installation compatibility.
Professional Thermal Power Design: Optimized thin-wall and extra-long tube structure ensures high heat exchange efficiency, specially tailored for large thermal power plant working conditions.
Excellent Anti-Fatigue Performance: Residual stress is eliminated after professional processing, enabling strong resistance to cyclic temperature and pressure impact and long-term operational stability.
Superior Corrosion Resistance: Reliable performance against feedwater medium corrosion, reducing tube fouling and extending service life of heater equipment.
Flexible Customization: Compliant with universal international standards and customizable per customer technical specifications to meet personalized project demands.
Applications
Widely used for high-pressure feedwater heaters and low-pressure feedwater heaters in large thermal power plants, these U-tubes serve as core heat exchange components for power generation unit auxiliary systems, applicable for new power plant projects, equipment renovation and replacement supporting services.
Product Size:
| OUTSIDE DIAMETER | WALL THICKNESS | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| NB(inch) | ASME(mm) | SCH10 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 |
| 1/2 | 21.3 | 2.11 | 2.41 | 2.77 | 3.73 | 4.78 | ||||
| 3/4 | 26.7 | 2.11 | 2.41 | 2.87 | 3.91 | 5.56 | ||||
| 1 | 33.4 | 2.77 | 2.9 | 3.38 | 4.55 | 6.35 | ||||
| 1.1/4 | 42.2 | 2.77 | 2.97 | 3.56 | 4.85 | 6.35 | ||||
| 1.1/2 | 48.3 | 2.77 | 3.18 | 3.68 | 5.08 | 7.14 | ||||
| 2 | 60.3 | 2.77 | 3.18 | 3.91 | 5.54 | 8.74 | ||||
| 2.1/2 | 73 | 3.05 | 4.78 | 5.16 | 7.01 | 9.53 | ||||
| 3 | 88.9 | 3.05 | 4.78 | 5.49 | 7.62 | 11.13 | ||||
| 3.1/2 | 101.6 | 3.05 | 4.78 | 5.74 | 8.08 | |||||
| 4 | 114.3 | 3.05 | 4.78 | 6.02 | 8.56 | 11.13 | 13.49 | |||
| 5 | 141.3 | 3.4 | 6.55 | 9.53 | 12.7 | 15.88 | ||||
| 6 | 168.3 | 3.4 | 7.11 | 10.97 | 14.27 | 18.26 | ||||
| 8 | 219.1 | 3.76 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 |
| 10 | 273 | 4.19 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 |
| 12 | 323.8 | 4.57 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 |
| 14 | 355.6 | 6.35 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 |
| 16 | 406.4 | 6.35 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.19 |
| 18 | 457.2 | 6.35 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 |
| 20 | 508 | 6.35 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 |
| 22 | 558.8 | 6.35 | 12.7 | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | |
| 24 | 609.6 | 6.35 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 |
| 26 | 660.4 | 7.92 | ||||||||
| 28 | 711.2 | 7.92 | 15.88 | |||||||
| 30 | 762 | 7.92 | 15.88 | |||||||
Testing Facilities:
• Tensile testing machine
• Hardness testing machine
• Impact testing machine
• Metallurgical microscope with imageanalyser
• Germany Spike desktop full spectrum and portable spectrometer
Packing & Shipping
PACKING | 1. Marking: Size, standard,heat number as customer required |
2. Surface: No 1. Hair Line, Bright | |
3. Inner Packing: steel strong trips on every bundle | |
4. Outer Packing: PE strip wrapping outside | |
5. We also can do as customers' requirements | |
SHIPPING | 1. Shipping by containers |
2. Shipping by bulk ship |
