ASTM A179 ASME SA179 Tubes Heat-Exchanger and Condenser Tubes
We are a professional ASTM A179/ASTM A 179 seamless tube manufacturer and supplier in China, specializing in heat exchanger and condenser tubes for industrial heat transfer applications.
Our SA179 tubes are widely used in power plants, petrochemical, oil & gas, and boiler systems due to their excellent heat transfer efficiency, dimensional accuracy, and mechanical performance.
What is ASTM A179 / ASME SA179 Tube
ASTM A179 (ASME SA179) is the standard specification for seamless cold-drawn low-carbon steel tubes designed for:
- Heat exchangers
- Condensers
- Boilers
- Similar heat-transfer equipment
These tubes feature:
- High thermal conductivity
- Good corrosion resistance
- Excellent forming and welding properties
- Uniform wall thickness and precise dimensions
ASTM A179 Tube Specifications
| Item | Details |
|---|---|
| Standard | ASTM A179 / ASME SA179 |
| Type | Seamless Cold Drawn |
| Application | Heat Exchanger / Condenser |
| Size Range | 1/8” to 3” (3.2 – 76.2 mm) OD |
| Length | 16 ft, 20 ft, 24 ft or customized |
| Manufacturing | Cold Drawn |
Typical Sizes
- 3/4” (19.05 mm)
- 1” (25.4 mm)
- 1¼” (31.75 mm)
- 1½” (38.1 mm)
- 2” (50.8 mm)
- 2½” (63.5 mm)
- 3” (76.2 mm)
Wall Thickness (BWG):
16, 14, 12, 10, 8 BWG
Chemical Composition
| C | Mn | P | S |
|---|---|---|---|
| 0.06–0.18 | 0.27–0.63 | ≤0.035 | ≤0.035 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥325 MPa |
| Yield Strength | ≥180 MPa |
| Elongation | ≥35% |
| Hardness | ≤72 HRB |
Applications of ASTM A179 Tubes
ASTM A179 tubes are widely used in:
- Power Generation Plants
- Chemical Processing Industry
- Oil Refining
- Heat Exchanger Systems
- Condensers
- Boilers (economizer, reheater, steam systems)
ASTM A179 tube/ASME SA179 Tube Wall Thickness Tolerance
| Seamless, Cold-Finished Tubes | ||
| Outside Diameter In. (mm) |
Wall thickness Tolerance % | |
| Over (+) | Under (-) | |
| 1 ½ (38.1) and under |
20 | 0 |
| Over 1½ (38.1) | 22 | 0 |
ASTM A179/ASME SA179 Tube Outside Diameter Tolerance
| Cold-Finished Seamless Tubes | ||
| Outside Diameter In. (mm) |
Permissible Variations In. (mm) | |
| Over (+) | Under (-) | |
| Under 1 (25.4) | 0.004 (0.1) | 0.004 (0.1) |
| 1 to 1 ½ (25.4 to 38.1), Incl | 0.006 (0.15) | 0.006 (0.15) |
| Over 11⁄2 to 2 [38.1 to 50.8], Excl | 0.008 (0.2) | 0.008 (0.2) |
| 2 to 21⁄2 [50.8 to 63.5], Excl | 0.010 (0.25) | 0.010 (0.25) |
| 21⁄2 to 3 [63.5 to 76.2], Excl | 0.012 (0.3) | 0.012 (0.3) |
ASTM A179/ASME SA179 Tube Cut Length Tolerance
| Cold-Finished Seamless Tubes | ||
| Outside Diameter, In.(mm) |
Cut Length ,in.(mm) | |
| Over(+) | Under(-) | |
| All Sizes | 3⁄16 [5] | 0 [0] |
| Under 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] and over | 3⁄16 [5] | 0 [0] |
| Under 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] and over | 3⁄16 [5] | 0 [0] |
| These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser. | ||
ASTM A179/ASME SA179 Tube Hydrostatic Test Pressures
| Hydrostatic Test Pressures | |
| Outside Diameter of Tube, in. [mm] | Hydrostatic Test Pressure, psi [Mpa] |
| Under 1 [25.4] | 1000 [7] |
| 1 to 11⁄2 [25.4 to 38.1], excl | 1500 [10] |
| 11⁄2 to 2 [38.1 to 50.8], excl | 2000 [14] |
| 2 to 3 [50.8 to 76.2], excl | 2500 [17] |
ASTM A179 / ASME SA179 is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
ASME SA179 Tube Test requirement
Hardness Test
Flattening Test
Flaring Test
Flange Test
Hydrostatic Test (Each tube shall be done this test or a substitute nondestructive electric test)
ASME SA179 Marking Specification
ASTM A179 / ASME SA179 tubes shall be marked according to standard of A450, with product name and order number.
ASME SA179 Tube Packing:
- Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.
- The Product marking shall include the ASTM A179 or ASME SA179, size, heat no., Lot No. and Manufacture name or logo.
How to Order ASTM A179 Tubes
Example:
ASTM A179 Seamless Tube
Size: 3/4 Inch
Thickness: 16 BWG
Length: 5200 mm
Quantity: XX Tons Related Products (Heat Exchanger Tubing System)
- ASTM A192 Boiler Tubes
- ASTM A210 grade C Heat Exchanger Tubes
- ASTM A213 Alloy Steel Tubes
- ASTM A106 Carbon Steel Pipes
- ASTM A210 grade A1 Heat Exchanger Tubes
- ASTM A210 grade A1 SeanlessTubes
