ASTM A249 Stainless Steel Heat Exchanger Tubes
Standard:ASTM A249 / ASME SA249
Manufacturing Process:Electric Resistance Welded (ERW), Welded, Cold Worked Welded
Material Grades :TP304, TP304L, TP304H, TP309S, TP310S, TP316, TP316L, TP316Ti, TP317L, TP321, TP321H, TP347, TP347H
Outside Diameter :6.35 mm – 76.2 mm (1/4" – 3")
Wall Thickness : 0.5 mm – 3.5 mm
Length:Up to 25 m (Straight), U-Bent Tubes Available
Tube Form:Straight Tubes, U Tubes, Coil Tubes (Customized)
Surface Finish:Bright Annealed, Pickled, Annealed & Pickled
Heat Treatment:Solution Annealed, Bright Annealed
End Finish:Plain End, Deburred Ends
Inspection:Eddy Current Test, Hydrostatic Test, Air Underwater Test, PMI, Dimensional Inspection, Visual Inspection
Send E-mail:info@gneestainless.com
Tel:+8615824687445
Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a249 stainless steel heat exchanger tubes in China. With abundant experience, we warmly welcome you to wholesale customized astm a249 stainless steel heat exchanger tubes from our factory. For price consultation, contact us.
What is the ASTM A249 specification?
The ASTM A249 specification covers welded tubes of nominal wall thickness made from various grades of austenitic steel, intended for use in applications such as boilers, superheaters, heat exchangers, or condensers.
ASTM A249 Stainless Steel Welded Tube Supplier and Manufacturer
As a professional manufacturer of stainless steel tubing, GNEE Stainless Steel offers a comprehensive range of ASTM A249 welded heat exchanger tubes. Available grades include TP304, TP304L, TP316, TP316L, TP321, TP321H, TP347, TP347H, TP309S, and TP904L, with surface finishes such as Bright Annealed (BA) and Annealed & Pickled (AP). Designed for applications including heat exchangers, condensers, boilers, and superheaters, these tubes undergo solution heat treatment and rigorous testing-including tensile, flattening, flaring, hardness, and grain size tests, as well as 100% hydrostatic or non-destructive testing-to ensure stable performance under thermal cycling and exposure to corrosive media.
1.1 Tubing sizes and wall thicknesses usually furnished to this specification are: 1/8 in. [3.2 mm] inside diameter to 12 in. [304.8 mm] outside diameter and 0.015 to 0.320 in. [0.4 to 8.1 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished, provided such tubing complies with all other requirements of this specification.
1.2 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] inside diameter or thinner than 0.015 in. [0.4 mm] in wall thickness.
1.3 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in the order.
ASTM A249 Welded Stainless Steel Tubes Specification
ASTM A249 TP304 TP316L Chemical Composition (%)
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Ti | Nb |
|---|---|---|---|---|---|---|---|---|---|---|
| TP304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–11.0 | - | - | - |
| TP304L | ≤0.035 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–12.0 | - | - | - |
| TP316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | - | - |
| TP316L | ≤0.035 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | - | - |
| TP321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.0–19.0 | 9.0–12.0 | - | ≥5×C | - |
| TP347 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.0–19.0 | 9.0–13.0 | - | - | ≥10×C |
ASTM A249 TP304 TP316L Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB Max) |
|---|---|---|---|---|
| TP304 | ≥515 | ≥205 | ≥35 | ≤201 |
| TP304L | ≥485 | ≥170 | ≥35 | ≤201 |
| TP316 | ≥515 | ≥205 | ≥35 | ≤217 |
| TP316L | ≥485 | ≥170 | ≥35 | ≤217 |
| TP321 | ≥515 | ≥205 | ≥35 | ≤217 |
| TP347 | ≥515 | ≥205 | ≥35 | ≤217 |
ASTM A249 stainless steel welded pipes tolerance:
|
OD |
THK. |
L |
|
|
＜25.40mm |
±0.10mm |
±10.00% |
OD＜50.8mm +3.0mm -0mm OD≥50.8mm +5.0 -0mm |
|
≥25.4mm~38.1mm |
±0.15mm |
||
|
≥38.1mm~50.8mm |
±0.20mm |
||
|
≥50.8mm~63.5mm |
±0.25mm |
||
|
≥63.5mm~76.2mm |
±0.30mm |
||
|
≥76.2mm~101.6mm |
±0.38mm |
||
|
≥101.6mm~190.5mm |
+0.38mm -0.64mm |
||
|
≥190.5mm~228.6mm |
+0.38mm -1.14mm |
ASTM A249 Welded Tubes Available Sizes
| Outside Diameter (mm) | Wall Thickness (mm) | Typical Application |
|---|---|---|
| 6.35 | 0.5–1.0 | Instrumentation Heat Exchangers |
| 9.52 | 0.7–1.2 | Condensers |
| 12.70 | 0.7–1.5 | Heat Exchangers |
| 15.88 | 0.8–1.5 | Shell & Tube Heat Exchangers |
| 19.05 | 1.0–2.0 | Boilers |
| 25.40 | 1.2–2.5 | Petrochemical Equipment |
| 31.75 | 1.5–3.0 | Pressure Heat Exchangers |
| 38.10–76.20 | 2.0–3.5 | Industrial Heat Transfer Systems |
What are the common size specifications for ASTM A249 heat exchanger tubes?
Common outside diameters for ASTM A249 heat exchanger tubes are 15.88 mm (5/8"), 19.05 mm (3/4"), and 25.4 mm (1"). Wall thicknesses typically range from 1.25 mm to 2.11 mm. Standard lengths are 6 meters or 12 meters, though custom lengths are also available (up to over 20 meters).
Applications of ASTM A249 Stainless Steel Tubes
Boiler: Transports high-pressure water and steam within a power plant.
Superheater: Reheats steam to a higher temperature before it enters the turbine.
Condenser: Cools hot steam and converts it into liquid within power generation and process systems.
Heat Exchanger: Safely transfers thermal energy between different fluids or gases.
If you need help specifying materials, tell me:What is the operating temperature and pressure?What fluid or gas will flow through the tubes?I can recommend the most suitable grade and wall thickness for your project.
What is the difference between ASTM A249 and ASTM A269?
The primary difference between ASTM A249 and ASTM A269 lies in their intended applications, manufacturing processes (such as cold-working the weld), and testing requirements. ASTM A249 covers welded tubes built for high-heat transfer equipment like boilers and heat exchangers, whereas ASTM A269 covers general-service seamless and welded tubing for corrosion-resistant and low- or high-temperature use.
What is the difference between ASTM A249 and ASTM A213?
The primary difference between ASTM A249 and ASTM A213 is the manufacturing method and material type: ASTM A249 covers welded austenitic stainless steel tubing, whereas ASTM A213 covers seamless ferritic and austenitic alloy-steel tubing. Both specifications apply to tubes used in boilers, superheaters, and heat exchangers.
If you are undecided between A213 (seamless) and A249 (welded), please let us know your design pressure and the medium involved; our technical team can provide recommendations on material selection to help reduce costs and improve efficiency.
Quality Control
All products are available with EN 10204 3.1/3.2 material test certificates, PMI material verification, 100% eddy current testing, hydrostatic testing, and dimensional and surface roughness inspections; third-party inspections by SGS, BV, TÜV, etc., are also accepted.
High-Quality Packaging
End Protection: Each pipe end is fitted with a plastic cap to prevent the ingress of dust and moisture and to protect the beveled or plain end from deformation due to impact.
Individual Protection: Plastic sleeves-each pipe is typically encased in an individual plastic film sleeve to prevent scratches caused by friction between pipes.
Bundling: Hexagonal bundling-loose cargo is usually bundled into a hexagonal shape and wrapped in woven bags or plastic sheeting.
Export-Standard Plywood Cases: This is the most common packaging method for heat exchanger tubes. Plywood cases effectively prevent crushing, bending, and physical damage during sea or land transport.
Marking: Pipe body inkjet marking-includes ASTM A249, material grade, specifications (OD x wall thickness), Heat No., and manufacturer's name.
Hot Tags: astm a249 stainless steel heat exchanger tubes, China astm a249 stainless steel heat exchanger tubes manufacturers, factory, SUS 317 321 316 stainless pipe, Stainless Steel Tube, Seamless Tube Features, 316L Stainless Steel Seamless Pipe, The steel grade 1 4021, Stainless Steel Seamless Pipe
Send Inquiry
You Might Also Like
