ASTM A213 TP304 Stainless Steel U Bend Tube For Heat Exchanger
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ASTM A213 TP304 is a standard specification for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes. It covers multiple grades, including the widely used stainless steel grades TP304, TP304L, TP316, and TP316L.
The ASTM A213 TP304 stainless steel U-bend tube is a seamless heat exchanger tube made from 18/8 chromium-nickel alloy (Grade 304) through cold forming, shaped into a U-bend. These tubes are commonly used in heat exchangers, condensers, and other applications requiring compact designs. They are suitable for applications demanding efficient heat transfer and corrosion resistance, such as power plants, petrochemical industries, food processing, and HVAC systems.
Advantages of ASTM A213 TP304 U Bend Tube for Boiler
Space-Saving Design: ASTM A213 TP304 stainless steel U-bends offer efficient space utilization, particularly in heat exchangers and condensers. They help reduce the overall length of the tube bundle, making them suitable for applications with limited space.
educed Stress and Fatigue: ASTM A213 TP304 U-bends are designed to minimize stress and fatigue in the bend area. The smooth curve of the U-bend helps evenly distribute stress, reducing the likelihood of tube failure due to fatigue or excessive stress concentration.
Enhanced Heat Transfer: The seamless ASTM A213 TP304 U-bend design enhances heat transfer by creating turbulence and improving fluid flow characteristics. This improves heat transfer efficiency in applications where heat transfer is critical.
Simplified Installation and Maintenance: ASTM A213 TP304 U-bends are easy to install and replace, making maintenance and repairs more convenient. The U-bend shape facilitates pipe installation, especially in confined spaces.
Chemical Composition of ASTM A213 TP304 Stainless Steel U Bend Tube
| Grade | C | Mn | Si | P | S | Ni | Cr | |
| TP304 | Min | 8.0 | 18.0 | |||||
| Max | 0.08 | 2.0 | 1.0 | 0.045 | 0.03 | 11.0 | 20.0 |
Mechanical Properies of ASME SA213 TP304 Stainless Steel Tube
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) | Hardness | |
| Rockwell (HRB) | Brinell(HBW) | ||||
| TP304 | ≥70(485) | ≥25(170) | ≥35 | ≤90 | ≤192 |
Wall Thickness Tolerance of ASME SA213
| Welded, Hot-Finished Tubes | Type | Wall Thickness Tolerance |
| OD Range | Average(-) | |
| 6~65mm(Incl.) | SMLS&WLD | (-12.5%,+20%) |
| >65mm | SMLS&WLD t/D≤5% | (-12.5%,+22.5%) |
| >65mm | SMLS&WLD t/D>5% |
(-12.5%,+15%) |
Applications:
Petrochemical & Chemical: Used in refineries, chemical plants, and other facilities for heat transfer and cooling processes.
Power Generation: Employed in both conventional and nuclear power plants for condenser cooling and heat recovery systems.
HVAC: Utilized in air conditioning and refrigeration units for efficient heat exchange.
Food & Beverage/Pharmaceutical: Applied in processing equipment for tasks like pasteurization, sterilization, and cooling of products.
GNEE Stainless Steel is a specialized manufacturer of Stainless Steel U Bend Tube / Stainless Steel U bent Tubes for U Tube Heat Exchanger (U bent Stainless Steel Tube for U bent Tube Heat Exchanger). Our U Bend Tube Tube-bending production line, installed in 2008. Solution annealing after bending will be processed to lower the residual stress, and followed by Hydrostatic testing/Pneumatic test and Dye Penetrant testing if required.
Our Stainless Steel U bend Tube / U bent Stainless Steel tubes included ASTM A213 ASME SA213 TP304 TP304L TP304H TP316 TP316L TP316Ti TP317 TP317L TP317LMN TP321 TP321H TP347H TP309S TP310S TP310H 904L N08904 254SMo S31254, ASME SA789 S31803 S32205 S32750 S32304 S32760 S32101.
Fully compliant with ASTM A213/ASME SA213 standards, with options for mill test certificates (EN 10204 3.1) and third-party inspection reports to ensure traceability and adherence to international quality requirements.
