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ASTM A213 TP316L Stainless Steel U TUBE For Boiler and Heat Exchanger
This product is a high-performance U-Tube specifically designed for boilers, superheaters, heat exchangers, and condensers operating under high-pressure, high-temperature, and corrosive environments. Manufactured from ASTM A213 TP316L, a low-carbon austenitic stainless steel, it offers superior corrosion resistance, high-temperature strength, and excellent formability and weldability, making it a critical component for thermal efficiency and long-term equipment reliability.
1.Chemical & Mechanical Properties
ASTM A213 TP316L Chemical Composition (%)
|
| C |
Mn |
P |
S |
Si |
Cr
|
Ni
|
Mo
|
|
≤ 0.35%
|
≤ 2.00%
|
≤ 0.045% |
≤ 0.03% |
≤ 1.00% |
16%-18% |
10.00%-14.00% |
2.00%-3.00% |
Mechanical Properties
| Tensile Strength |
Yield Strength |
Elongation (in 50mm) |
Hardness |
| ≥485 MPa |
≥170 MPa |
≥35% |
≤217 HB (Brinell) |
Available Size Range
Outer Diameter (OD): Common range from 9.53mm (3/8") to 25.4mm (1"), other sizes available upon request.
Wall Thickness (WT): Common range from 0.8mm to 2.5mm (corresponding to different ODs).
U-Bend Radius (R): Customized according to customer design and tube bundle layout.
Straight Leg Length: Precisely cut as per customer drawings.
2. Key Advantages
- Superior Corrosion Resistance
The addition of Molybdenum (Mo) in TP316L provides enhanced resistance to pitting and crevice corrosion compared to 304 series, making it ideal for chloride-containing environments.
The "L" grade denotes a maximum carbon content of 0.030%, which minimizes the risk of carbide precipitation during welding and exposure to the sensitization temperature range (425-860°C), thus preventing intergranular corrosion.
- Excellent High-Temperature Properties
Maintains good mechanical strength and creep resistance at elevated temperatures, ensuring structural integrity under prolonged service.
- Precision U-Bending Process
Advanced bending techniques ensure uniform wall thickness, no wrinkling, or excessive thinning at the U-bend. The smooth inner surface minimizes pressure drop and maintains consistent heat transfer efficiency.
3. Key Applications
Heat Exchanger (Shell-side less corrosive) —— To handle thermal expansion
Condenser / Seawater Cooler —— Resist chloride ion corrosion
Boiler / Superheater —— High-temperature strength & oxidation resistance
Petrochemical and Chemical Processing —— Resist intergranular corrosion after welding
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Why Choose Our 316L U-Tubes?
- Full Traceability: Each batch of materials has a complete material certificate to ensure compliance with standards and specifications.
-
Superior Workmanship: Professional pipe bending technology ensures defect-free U-bends, extending equipment lifespan.
-
Customized Solutions: We can provide precise customized production based on your specific drawings and technical requirements.
-
Global Certifications: Our products conform to international standards such as ASTM, ASME, and EN, and serve customers worldwide.
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