Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
Add to Cart
What is ASTM A179?
ASTM A179/A179M is a standard specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes. ASTM A179/A179M includes seamless cold-drawn mild steel tubes of minimum wall thickness for tubular heat exchangers, condensers, and similar heat transfer equipment.ASTM A179/A179M includes tubes with outside diameters from 1⁄8 to 3 inches [3.2 to 76.2 mm]. This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.
Features of ASTM A179 U Bend Tube
Mechanical Properties of ASTM A179
| Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation (%) |
| ≥180 | ≥325 | ≥35 |
Chemical Composition of ASTM A179
| ASTM A179/A179M Chemical Components (%) | |||||||
| C | Si | Mn | P | S | Mo | Cr | V |
| 0.06-0.18 | / | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / |
ASTM A179 U bend tube Wall Thickness Tolerance
| ASTM A179/A179M Seamless, Cold-Finished Tubes | ||
| Outside Diameter | Wall thickness Tolerance % | |
| Over (+) | Under (-) | |
| 1 ½ (38.1) | 20 | 0 |
| Over 1½ (38.1) | 22 | 0 |
Dimensional Tolerance of ASTM A179
| ASTM A179/A179M Cold-Finished Seamless Tubes | ||
| Outside Diameter | 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) |
Length Tolerance of ASTM A179
| ASTM A179/A179M Cold-Finished Seamless Tubes | ||
| Outside Diameter | Cut Length, in.(mm) | |
| 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 allowable length variations apply to the pipe before bending. They apply to cut lengths including 24 feet [7.3 meters]. For lengths in excess of 24 feet [7.3 m], the above overrun shall be increased by 1/8 inch [3 mm] for each 10 feet [3 m] or fraction thereof over 24 feet or 1/2 inch [13 mm], whichever is less. | ||
Application
