About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
ASTM A179/A179M covers seamless cold-drawn low-carbon steel tubes for heat exchangers, condensers and similar heat-transfer equipment. These seamless steel tubes are specified by material, dimensions, heat treatment and testing requirements.
| Specification Item | Standard Technical Details |
|---|---|
| Standard | ASTM A179/A179M; ASME SA179/SA179M |
| Product Type | Seamless cold-drawn low-carbon steel tube |
| Material | Low-carbon steel |
| Manufacturing Process | Seamless, cold drawn |
| Heat Treatment | Heat treated after the final cold-drawing pass |
| Outside Diameter | 1/8–3 in (3.2–76.2 mm), inclusive |
| Main Applications | Heat exchangers and condensers |
The chemical composition requirements for ASTM A179/A179M seamless cold-drawn steel tubes are as follows:
| Element | Composition (%) |
|---|---|
| Carbon | 0.06–0.18 |
| Manganese | 0.27–0.63 |
| Phosphorus | ≤0.035 |
| Sulfur | ≤0.035 |
The mechanical properties of ASTM A179/A179M tubes are specified as follows:
| Property | Requirement |
|---|---|
| Tensile Strength | ≥325 MPa |
| Yield Strength | ≥180 MPa |
| Elongation | ≥35% |
| Hardness | ≤72 HRB |
ASTM A179/A179M covers seamless cold-drawn low-carbon steel tubes with outside diameters from 1/8 in to 3 in (3.2–76.2 mm). Heat exchanger and condenser tubes are commonly specified by outside diameter (OD) and wall thickness, with BWG commonly used to indicate tube wall thickness.
M = 0.0246615 × (D − t) × t
Where:
M = theoretical weight (kg/m)
D = outside diameter (mm)
t = wall thickness (mm)
The following are representative ASTM A179 tube sizes for heat exchanger and condenser applications. Actual OD, wall thickness and tube length depend on the order requirements.
| Outside Diameter D (in) | Outside Diameter D (mm) | BWG | Wall Thickness t (mm) | Nominal Weight M (kg/m) |
|---|---|---|---|---|
| 1/2" | 12.70 | 18 | 1.24 | 0.35 |
| 16 | 1.65 | 0.45 | ||
| 5/8" | 15.88 | 18 | 1.24 | 0.45 |
| 16 | 1.65 | 0.58 | ||
| 14 | 2.11 | 0.72 | ||
| 3/4" | 19.05 | 18 | 1.24 | 0.54 |
| 16 | 1.65 | 0.71 | ||
| 14 | 2.11 | 0.88 | ||
| 12 | 2.77 | 1.11 | ||
| 1" | 25.40 | 16 | 1.65 | 0.97 |
| 14 | 2.11 | 1.21 | ||
| 12 | 2.77 | 1.55 | ||
| 10 | 3.40 | 1.85 | ||
| 1-1/4" | 31.75 | 14 | 2.11 | 1.54 |
| 12 | 2.77 | 1.98 | ||
| 10 | 3.40 | 2.38 | ||
| 1-1/2" | 38.10 | 14 | 2.11 | 1.87 |
| 12 | 2.77 | 2.41 | ||
| 10 | 3.40 | 2.91 | ||
| 8 | 4.19 | 3.50 | ||
| 2" | 50.80 | 14 | 2.11 | 2.53 |
| 12 | 2.77 | 3.28 | ||
| 10 | 3.40 | 3.98 | ||
| 8 | 4.19 | 4.82 | ||
| 2-1/2" | 63.50 | 12 | 2.77 | 4.15 |
| 10 | 3.40 | 5.04 | ||
| 8 | 4.19 | 6.13 | ||
| 3" | 76.20 | 12 | 2.77 | 5.01 |
| 10 | 3.40 | 6.10 | ||
| 8 | 4.19 | 7.44 |
ASTM A179/A179M includes the following tests and inspections for seamless cold-drawn tubes:
| Test Requirement | Purpose |
|---|---|
| Flattening Test | Checks the tube for cracking during flattening. |
| Flaring Test | Checks the tube's ductility during flaring. |
| Flange Test | Used as a substitute for the flaring test when specified. |
| Hardness Test | Verifies the hardness of the finished tube. |
| Hydrostatic Test | Checks each tube for leakage under hydrostatic pressure. |
| Nondestructive Electrical Test | May be used instead of hydrostatic testing when specified by the buyer. |
Q1. What is ASTM A179 used for?
ASTM A179/A179M covers seamless cold-drawn low-carbon steel tubes for heat exchangers, condensers and similar heat-transfer equipment.
Q2. What is the difference between ASTM A179 and SA179?
ASTM A179 is the ASTM specification, while SA179 is the corresponding ASME designation for seamless cold-drawn low-carbon steel tubes.
E-mail: sales@eastern-steels.com
