ASTM A179 Tube & ASME SA179 Seamless Steel Tubes Supplier & Manufacturer
Amardeep Steel is a leading ASTM A179 / ASME SA179 heat exchanger tube supplier, manufacturer, and exporter. ASTM A179 seamless steel tubes are carbon steel tubes specifically designed for efficient heat transfer applications such as heat exchangers and condensers.
These ASTM A179 tubes are widely used in industries like chemical processing, petrochemical, oil & gas, and power generation, where high temperatures and pressure variations are common. The carbon steel composition ensures excellent thermal conductivity along with good strength and durability, making it suitable for demanding environments.
The tubes are manufactured using a seamless cold-drawn process, ensuring uniform structure, precise dimensions, and high mechanical strength. Each ASTM A179 seamless tube undergoes rigorous testing to ASTM A450/A450M, including hydrostatic testing, flattening test, flaring tests, and eddy current inspection to maintain quality standards.
Amardeep Steel has supplied ASTM A179 / ASME SA179 tubes to clients in chemical processing, power generation, and oil & gas across 50+ countries. EN 10204 3.1 mill certificates and third-party inspection (TPI) are available for all orders.
For boiler tube applications, see our ASTM A192 Boiler Tubes and ASTM A210 Tubes.
What is ASTM A179 / ASME SA179 Tube?
ASTM A179 / ASME SA179 tubes are seamless, cold-drawn low carbon steel tubes designed for heat exchangers, condensers, and similar heat transfer equipment. Known for their smooth surface finish, tight dimensional tolerances, and excellent thermal conductivity, these ASTM A179 seamless steel tubes offer better performance compared to hot-finished tubes. Their corrosion resistance and mechanical strength make them suitable for power plants, marine systems, petrochemical industries, and boiler applications.
After the final cold drawing pass, tubes are heat treated at 1200 °F [650 °C] or higher per ASTM A179 requirements; this normalizes internal stress and ensures the specified mechanical properties are met.
ASTM A179 Seamless Steel Tube Specification (ASME SA179)
| Product | ASTM A179 Seamless Steel Tubes |
| Specification | ASTM A179 / ASME SA179 |
| Standard | ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes |
| Size OD (In mm) | 1/8" (3.2 mm) to 3" (76.2 mm). Standard warehouse range: 3/4" to 3"; sizes below 3/4" available on request. |
| Wall Thickness (BWG, mm) | 16 BWG (1.651 mm), 14 BWG (2.108 mm), 12 BWG (2.769 mm), 10 BWG (3.404 mm), 8 BWG (4.191 mm) |
| Application | Tubular heat exchangers, condensers, and similar heat transfer equipment (ASTM A179/A179M) |
| Length | 5800 mm; 6000 mm; 6096 mm; 7315 mm; 11800 mm and custom. Max length: 27000 mm. U-bend available on request. |
| Product Marking | ASTM A179 or ASME SA179, size, heat no., lot no., and manufacturer name or logo. |
| Other Testing | Hydrostatic Test, Flattening Test, Flaring Test, Eddy Current (NDT) — per ASTM A450/A450M |
| Type | Seamless – Cold Drawn |
| Form | Round |
| International Standards | ASME, API, EN, DIN, ISO |
| End | Plain End, Beveled End, Coupling |
| Inspection | Third Party Inspection, Buyer Inspection |
| Packing | Weaving Bag, Seaworthy Bundles, Wooden Case if required |
| Specials | Sizes and Specification other than above can be manufactured on request |
| Certification | EN 10204 3.1 |
| Delivery Time | 1-2 Days for Material in Stock, 7-30 Days for Make to Order Materials |
Tubes conform to the applicable provisions of ASTM A450/A450M (General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes).
ASTM A179 Tube Chemical Composition
| C | Mn | P≤ | S≤ | Si≤ |
| 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 | 0.25 |
Si is not explicitly mandated in ASTM A179 but is controlled in practice. Product analysis per ASTM A450/A450M is performed on each heat to confirm compliance.
ASTM A179 Seamless Tube Mechanical Properties
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness (HRB) |
| ≥325 | ≥180 | ≥35 | ≤72 |
Mechanical properties apply to tubes with OD ≥ 1/8" (3.2 mm) and wall thickness ≥ 0.015" (0.4 mm) per ASTM A179 Section 1.2.
Need ASTM A179 / ASME SA179 tubes for your project?
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ASTM A179 / SA179 Equivalent Material Comparison
|
ASTM |
UNS No. |
KOREA / JAPANESE (KS/JIS) Symbol |
KS/JIS Number |
DIN Type |
DIN |
DIN |
Material No. |
B.S |
B.S Grade |
NBN Type |
NBN Grade |
AF NF |
UNI Type |
UNI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
ASTM A179 / SA179 |
K01200 |
STBH 340 / STB 35 |
D3563 / G3461 |
St 35.4 |
1629 |
1.0309 |
3606 |
CFS 320 |
D 37-2 |
629 (3b) |
TU 37 C / A49-215 (3a) |
C 14 |
5462 |
Also comparable to: St 35.8 (DIN 17175, Mat. No. 1.0305) per DIN 2391 cold-drawn specification.
ASTM A179 / ASME SA179 is commercially interchangeable — SA179 is the ASME Boiler and Pressure Vessel Code adoption of ASTM A179 and carries identical chemical and mechanical requirements. Specify SA179 when ASME certification is required for pressure equipment.
ASTM A179/ ASME SA179 Wall Thickness Tolerance
|
Outside Diameter — In. (mm) |
Over (+) % |
Under (−) % |
|---|---|---|
|
1½ (38.1) and under |
20 |
0 |
|
Over 1½ (38.1) |
22 |
0 |
ASTM A179 Seamless Steel Tube OD Tolerance
|
OD — In. (mm) |
Over (+) In. (mm) |
Under (−) In. (mm) |
|---|---|---|
|
Under 1 (25.4) |
0.004 (0.10) |
0.004 (0.10) |
|
1 to 1½ (25.4 to 38.1), Incl. |
0.006 (0.15) |
0.006 (0.15) |
|
Over 1½ to 2 (38.1 to 50.8), Excl. |
0.008 (0.20) |
0.008 (0.20) |
|
2 to 2½ (50.8 to 63.5), Excl. |
0.010 (0.25) |
0.010 (0.25) |
|
2½ to 3 (63.5 to 76.2), Excl. |
0.012 (0.30) |
0.012 (0.30) |
ASTM A179 Tube Cut Length Tolerance
|
Length Range |
Over (+) |
Under (−) |
|---|---|---|
|
≤ 24 ft [7315 mm] |
+1/8" [3.2 mm] |
0 |
|
> 24 ft [7315 mm] |
+3/16" [4.8 mm] |
0 |
Source: ASTM A179/A179M Table 3
ASTM A179/ SA179 Cold Rolled High Precision Boiler Tubing Hydrostatic Test Pressures
| OD 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 Seamless Tube Dimensions
|
OD (mm) |
WT 2 |
WT 2.5 |
WT 3 |
WT 3.5 |
WT 4 |
WT 4.5 |
WT 5 |
WT 6 |
WT 6.5–7 |
WT 7.5–8 |
WT 8.5–9 |
WT 9.5–10 |
WT 11 |
WT 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ø25–Ø28 |
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Ø32 |
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Ø34–Ø36 |
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Ø38 |
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Ø40 |
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Ø42 |
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Ø45 |
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Ø48–Ø60 |
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Ø63.5 |
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Ø68–Ø73 |
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Ø76 |
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Ø80 |
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Ø83 |
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Ø89 |
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Ø95 |
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Ø102 |
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Ø108 |
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Ø114–Ø168 |
• |
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ASTM A179 Seamless Steel Tube Applications
ASTM A179/ASME SA179 heat exchanger tubes are preferred for their durability, thermal efficiency, and consistent performance in demanding industrial environments. These tubes are widely used in:
- Power generation: Low-carbon composition provides thermal conductivity up to 50 W/m·K, reducing fouling in shell-and-tube heat exchanger bundles at power plants.
- Chemical processing: Smooth cold-drawn bore surface minimises fluid resistance and facilitates reliable heat transfer between fluids in reactors and processing systems.
- HVAC systems: Uniform wall thickness and tight OD tolerances ensure consistent thermal exchange between refrigerant and air in industrial HVAC units.
- Oil & gas industry: Excellent pressure rating and mechanical strength support temperature regulation in upstream and downstream process equipment.
- Food & beverage industry: Clean-drawn surface finish meets hygiene requirements for heat exchange in food and beverage processing systems.
- Marine / shipbuilding: Corrosion resistance and dimensional stability make A179 tubes suitable for seawater cooling systems and condensers on vessels and offshore platforms.
- Pharmaceutical / sugar mills: Tight dimensional tolerances and smooth bore facilitate clean process heat exchange where contamination control and consistent flow are critical.
These ASTM A179 seamless steel tubes are preferred for their durability, thermal efficiency, and consistent performance in demanding industrial environments.
About Amardeep Steel — Trusted ASTM A179 Tube Manufacturer
Amardeep Steel Centre is a Mumbai-based manufacturer and global exporter of ASTM/ASME-standard industrial tubes and pipes. With ISO-certified facilities and EN 10204 3.1 documentation on all products, Amardeep has supplied heat exchanger tubing to refineries, power plants, and chemical processing plants across the Middle East, Europe, and Southeast Asia. Third-party inspection by SGS, Bureau Veritas, and TÜV is available on request.
FAQ’s About ASTM A179 Tube / SA179 Tubes
What is the chemical composition of SA179 material?
SA179 material contains carbon (0.06–0.18%), manganese (0.27–0.63%), phosphorus (≤0.035%), sulfur (≤0.035%), and silicon (≤0.25%), ensuring strength, durability, and corrosion resistance.
What sizes are available for ASTM A179 / ASME SA179 tubes?
These tubes are available in outer diameters from 1/8" (3.2 mm) to 3" (76.2 mm). Standard warehouse range is 3/4" to 3"; custom OD from 1/8" is available on request. Wall thicknesses range from 16 BWG to 8 BWG.
What industries commonly use these tubes?
ASTM A179 tubes are widely used in power generation, chemical processing, oil & gas, HVAC, food processing, marine/shipbuilding, pharmaceutical, and industrial heat exchanger applications.
What is the difference between ASTM A179 and ASTM A213 tubes?
ASTM A179 covers seamless cold-drawn low-carbon steel tubes for heat exchangers and condensers. ASTM A213 covers seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes — primarily higher-temperature stainless and alloy grades. A179 is the carbon steel heat exchanger standard; A213 is the alloy/stainless equivalent.
Is ASME SA179 the same as ASTM A179?
Yes. ASME SA179 and ASTM A179 share identical chemical composition, mechanical properties, and dimensional tolerances. SA179 is the ASME Boiler and Pressure Vessel Code adoption of the ASTM A179 standard — used when ASME certification is required for pressure equipment.
What testing is performed on ASTM A179 tubes?
Per ASTM A450/A450M, tubes undergo hydrostatic testing, flattening test, flaring test, hardness test, and mechanical (tensile/yield) testing. Eddy current (NDT) testing is available on request. EN 10204 3.1 mill test reports are supplied with every order.
