ASTM A213 TP304 Stainless Steel U Bend Tube For Heat Exchanger
Material：Stainless Steel
Surface Treatment：Polished
Usage：Pipeline Transport, Mining, Construction & Decoration, Special Purpose
Section Shape：Round
Size：Od 6mm-530mm Wt: 1.00mm-20mm
Length：4000-12000mm
Material Grade：304 /304L/316/316L
Cetificate：ISO
Payment Term：L/C T/T
Delivery Time：15-20 Days Ex.Mill
Transport Package：in Bundles or Standard Export Seaworthy Packing
Specification：/2''-42''
Production Capacity：20000 Ton/Tons / Month
ASTM A213 TP304 Stainless Steel U Bend Tube For Heat Exchanger
304 stainless steel tubing is a low-carbon austenitic stainless steel designed for corrosive and high-temperature environments such as heat exchangers, boilers, and condensers.
GNEE supplies ASTM A213 TP304 stainless steel U-bends, seamless heat exchanger tubes manufactured using an 18/8 chromium-nickel alloy (304 grade) cold-forming process. U-bends are straight tubes cold-bent into the desired U-shape using a specialized bending machine, commonly used in heat exchangers, condensers, and other applications requiring compact designs. They are suitable for applications demanding high heat transfer efficiency and corrosion resistance, such as power plants, the petrochemical industry, food processing, and HVAC systems.
ASTM A213 TP304 U-bend pipe specifications
Material: TP304L (UNS S30403) – low carbon version of 304 stainless steel
Process: Seamless, cold-worked, and bright annealed
Finish: Bright, smooth, oxide-free internal and external surface
Bend Radius: Customizable (typically 1.5×OD, 2×OD, etc.)
Standards: ASTM A213 / ASME SA213
Size Range: OD 6–38 mm; WT 0.5–3.0 mm; Lengths up to 30 meters (straight) before bending
Specification
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%) |
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.
Testing & Inspection
Tensile Strength
Reverse bending test
Flattening test
Flare test
Flange test
Dimensional
Hydrostatic Test
Pneumatic Test
Hardness
Eddy Current test
Intergranular Corrosion (option)
ASTM A213 TP304 Stainless Steel U Bend Tube Manufacturer
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.
high quality packaging
Packaged in bales or laminated wooden crates, wrapped in plastic, and appropriately protected to ensure seaworthiness for transport, or as required.
Marking must comply with Specification A1016/A1016M. Marking must include information on whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.
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