ASTM A179 Heat-Exchanger And Condenser Tubes
Product Specifications
seamless steel tube
ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes.
ASTM A179 or ASME SA179 cold drawn seamless carbon steel tube is applicable to tubular heat exchanger, condenser different similar heat transfer equipment with the minimum wall thickness.
This type of cold drawn seamless steel tube is widely used in chemical engineering, carbon treatment, oil refining, nuclear electric power generation, aviation, and so forth. STM A179 or ASME SA179 seamless carbon steel pipe is also used for manufacturing boiler water cold wall, economizer, reheater and steam cylinder.
ASTM A179 Chemistry Composition:
| C, % | Mn, % | P, % | S, % |
| 0.06-0.18 | 0.27-0.63 | 0.035 max | 0.035 max |
Other carbon and alloy steel can be made.
ASTM A179 Mechanical Properties:
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HRB |
| 325 min | 180 min | 35 min | 72 max |
ASTM A179/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) |
Cold drawn heat exchangers tubes with average wall thickness (sizes in inches)
| Average wall thickness | ||||||||||||
| diameter | BWG (inch) | 14 (.083) | 13 (.095) | 12 (.109) | 11 (.120) | 10 (.134) | 9 (.148) | 8 (.165) | 7 (.180) | 6 (.203) | 5 (.220) | |
| [mm] | [inch] | [mm] | 2,11 | 2,41 | 2,77 | 3,05 | 3,40 | 3,76 | 4,19 | 4,57 | 5,16 | 5,59 |
| 12,70 | 1/2 | lb/ft | 0.369 | 0.41 | 0.445 | 0.487 | 0.523 | 0.557 | ||||
| 0.5 | kg/m | 0,551 | 0,612 | 0,678 | 0,726 | 0,780 | 0,829 | |||||
| 15,88 | 5/8 | lb/ft | 0.48 | 0.537 | 0.6 | 0.647 | 0.703 | 0.754 | ||||
| 0.625 | kg/m | 0,716 | 0,801 | 0,897 | 0,965 | 1,046 | 1,124 | |||||
| 19,05 | 3/4 | lb/ft | 0.591 | 0.664 | 0.745 | 0.807 | 0.881 | 0.952 | ||||
| 0.75 | kg/m | 0,881 | 0,989 | 1,110 | 1,203 | 1,312 | 1,418 | |||||
| 22,23 | 7/8 | lb/ft | 0.702 | 0.791 | 0.891 | 0.967 | 1.06 | |||||
| 0.875 | kg/m | 1,045 | 1,177 | 1,326 | 1,439 | 1,577 | ||||||
| 25,40 | 1 | lb/ft | 0.812 | 0.918 | 1.037 | 1.128 | 1.239 | 1.346 | 1.471 | 1.575 | ||
| 1 | kg/m | 1,212 | 1,366 | 1,550 | 1,681 | 1,845 | 2,006 | 2,192 | 2,347 | |||
| 31,75 | 1 1/4 | lb/ft | 1.034 | 1.172 | 1.328 | 1.448 | 1.597 | 1.741 | 1.912 | 2.056 | 2.272 | 2.417 |
| 1.25 | kg/m | 1,542 | 1,744 | 1,980 | 2,159 | 2,377 | 2,595 | 2,848 | 3,063 | 3,383 | 3,606 | |
| 38,10 | 1 1/2 | lb/ft | 1.256 | 1.426 | 1.619 | 1.769 | 1.955 | 2.137 | 2.353 | 2.537 | 2.814 | 3.009 |
| 1.5 | kg/m | 1,870 | 2,121 | 2,413 | 2,636 | 2,909 | 3,184 | 3,504 | 3,779 | 4,191 | 4,481 | |
| 50,80 | 2 | lb/ft | 1.699 | 1.933 | 2.201 | 2.409 | 2.67 | 2.929 | 3.246 | 3.499 | 3.896 | 4.185 |
| 2 | kg/m | 2,533 | 2,876 | 3,281 | 3,591 | 3,974 | 4,362 | 4,816 | 5,210 | 5,807 | 6,232 | |
| 63,50 | 2 1/2 | lb/ft | 2.143 | 2.44 | 2.783 | 3.05 | 3.385 | 3.717 | 4.126 | 4.46 | 4.98 | 5.36 |
| 2.5 | kg/m | 3,194 | 3,631 | 4,148 | 4,547 | 5,039 | 5,539 | 6,128 | 6,641 | 7,424 | 7,983 | |
| 76,20 | 3 | lb/ft | 2.586 | 2.947 | 3.365 | 3.691 | 4.102 | 4.508 | 5.006 | 5.421 | 6.064 | 6.536 |
| 3 | kg/m | 3,855 | 4,385 | 5,016 | 5,502 | 6,104 | 6,717 | 7,440 | 8,072 | 9,040 | 9,734 | |
Certificate
Our Certificate：
| ISO 9001 | IATF 16949 |
Why Choose Tenjan?
(1) Large Scale Production，Strong R&D Capability
The annual production capacity can reach 60,000 tons under years of development. Every-year R&D investment and a team of technicians enable Tenjan with strong R&D capability. Tenjan has full system of production with advanced equipment, such as perforation, pickling, cold rolling, cold drawing, straightening, flaw detection, tensile test and machining.
(2) Quality Control
Every batch of products can be traced and guaranteed by the raw material certificate and steel tube quality certificate. Complete quality control system, following ISO9001, to ensure a full inspection process such as pull force test, chemical composition test and eddy current detection.
(3) Certification
The chairman of Tenjan, Mr. Wensheng Gu, is one of the major constitutors of national standard Couplers for Rebar Mechanical Splicing JG/T 163-2013. And Tenjan has won the Quality System Certificates of ISO9001 and IATF16949.
(4) Major Customer Case
We have long-term relationship with customers such as BMW, MCC, CNNP, CRRC, Midea, Sinohydro, China Pingmei, China Academy of Building Research and so on.
(5) Export Countries
Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total six continents over 20 countries, and which has been consistently trusted by customers.
(6) Customer Service
Tenjan provides considerate service to every customer with fast feedback, quality track and technical support.