| Standard: | ASTM A213/ASME SA213 | Material: | TP304/304L; 1.4301/1.4307 |
|---|---|---|---|
| Type Of Tube: | U-bend/Straight Seamless Tube | Application: | Heat Exchanger， Condenser |
| Outside Diameter: | 1/4”-1” Or Custom Size | Wall Thickness: | BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10 |
| Length: | Custom Length | Delivery Condition: | Annealed&Pickled |
| Packing: | Plywood Case/Iron Case | Mill Test Certificate: | EN10204 3.1/EN10204 3.2 |
| High Light: | a213 stainless steel u bend tube， tp304 stainless steel u bend tube， 1/8′ stainless steel u bend tube | ||
ASTM A213/ASME SA213 TP304/304L STAINLESS STEEL SEAMLESS U BEND HEAT EXCHANGER TUBE
Overview:
The TP304/304L U bend tube is primarily manufactured from stainless steel grades 304 or 304L. These grades are composed of iron， chromium， and nickel， with the addition of a small amount of carbon. Grade 304L contains lower carbon content than 304， which helps to minimize the risk of sensitization and improve its resistance to intergranular corrosion.
This U shape enables the tube to be installed in heat exchangers， where it is bent and formed into a bundle of tubes to facilitate the transfer of thermal energy between two fluids. TP304/304L U bend tubes are widely used in heat exchanger systems， particularly in applications involving the transfer of heat between fluids. These tubes are commonly found in industries such as chemical processing， oil and gas， power generation， HVAC (heating， ventilation， and air conditioning)， and refrigeration.
TP304/304L stainless steel grades offer excellent corrosion resistance in various environments， including freshwater， atmospheric conditions， and mild acidic or alkaline solutions. They are resistant to corrosion from organic and inorganic acids， making them suitable for use in heat exchanger applications where contact with corrosive media may occur.
TP304/304L stainless steel exhibits good high-temperature strength and can withstand elevated temperatures without significant loss of mechanical properties. This property is crucial in heat exchanger applications where the tubes may be subjected to elevated temperatures.
Specification:
| Specification | ASTM A213 & Its equivalent ASME， DIN & EN Standard. |
| Grades | TP304/304L; 1.4301/1.4307 |
| Type | U Bend Seamless Tube |
| Outside Diameter | 1/4'' to 1'' or custom size |
| Wall Thickness | BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10 |
| Length | As per Customer requirement， Maximum upto 22 Meter Long. |
| Delivery Condition | Solution Annealed & Pickled |
| Ends | Plain End， Beveled End |
| Other Testing | Product Analysis， Eddy Current Test， Hydrostatic Test， Ultrasonic Test， Flattening Test， Hardness Test， Tensile Test etc. |
| Dimension | All Pipe & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Packing | Plywood Case/Iron Case |
Chemical Composition:
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni |
| 304 | S30400 | 0.08 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 18.0-20.0 | 8.0-11.0 |
| 304L | S30403 | 0.035 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 18.0-20.0 | 8.0-12.0 |
Mechanical Properties:
| Grade | Tensile Strength， min， ksi (MPa) | Yield Strength， min， ksi (MPa) | Elongation in 2 in. or 50mm， min (%) | Hardness | Solutioning Temperature， min， °F(°C) | |
| Rockwell | Brinell/Vickers | |||||
| 304 | 75(515) | 30(205) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
| 304L | 70(485) | 25(170) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
Equivalent Grades:
| Standard | WERKSTOFF NR. | Unified Numbering System | European Standards | AFNOR | British Standards | GOST | Japanese Standards |
| 304 | 1.4301 | S30400 | X5CrNi18-10 | Z7CN18‐09 | 304S31 | 08Х18Н10 | SUS 304 |
| 304L | 1.4306 / 1.4307 | S30403 | X2CrNi18-9 / X2CrNi19-11 | Z3CN18‐10 | 304S11 | 03Х18Н11 | SUS 304L |
Applications:
1. Chemical Processing: TP304/304L U bend tubes are utilized in various chemical processing equipment， including heat exchangers， reactors， and condensers. These tubes can withstand corrosive chemicals and provide reliable heat transfer， making them suitable for chemical processing applications.
2. Oil and Gas Industry: TP304/304L U bend tubes are employed in heat exchangers and condensers used in oil and gas processing facilities. They play a crucial role in the cooling and heating of fluids involved in refining processes， natural gas processing， and offshore platforms.
3. Power Generation: TP304/304L U bend tubes are utilized in power plants for heat exchange applications. They can be found in both conventional power plants and nuclear power plants， performing tasks such as cooling turbine condensers and heat recovery systems.
4. HVAC (Heating， Ventilation， and Air Conditioning): TP304/304L U bend tubes are used in HVAC systems for heat transfer processes， including air conditioning， refrigeration， and heat recovery. They efficiently transfer thermal energy between hot and cold fluids， contributing to effective temperature control in buildings and other HVAC applications.
5. Food and Beverage Industry: TP304/304L U bend tubes are applied in heat exchangers for food and beverage processing. They facilitate the pasteurization， sterilization， and cooling of liquids， providing hygienic and efficient heat transfer in the production of dairy products， beverages， and other food processing applications.
6. Pharmaceuticals: TP304/304L U bend tubes are used in pharmaceutical manufacturing equipment， particularly in processes where temperature control and heat transfer are crucial. These tubes are utilized in heat exchangers and condensers to effectively cool or heat pharmaceutical products during various manufacturing steps.
