ASTM A179 Steel Tube

ASTM A179 covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular, heat exchanger, condensers, and other heat transfer services. seamless ASTM A 179 steel tube is supplied and produced by cold drawning method. Chemical composition contains carbon, manganese, phosphorus, and sulfur. Test required: hardness test, flattening test, flaring test, flange test, and hydrostatic test.

ASTM A179 Seamless Carbon Tube manufactured by Finego has following advantages: High Dimensional Accuracy, High Strength, Better Corrosion resistance, Fine Finish. ASTM A179 Tube is delivered as annealed, normalized, normalized and tempered condition.Finego also offers Value-Added Fabrication Services: Beveled End, Black Oil Surface,Galvanized Finish,Anti-corrosion oil,Machining.

Finego supplies low temperature seamless carbon steel tube of ASTM A179 specification in product types: Cold Drawn in cut lengths or U tube(bended for heat exchanger application), manufactured for application of critical engineering applications as refineries, power plant, Newclear Power, Fossil Fuel Power Plant.

Application:

ASTM A179 cold drawn heat exchanger steel tubes are widely used in industries such as petroleum, chemical, medical, food, light industry, machinery, instrument, include industrial pipeline and mechanical structure parts, etc.

ASTM A179 tube chemical compositions:

a179 chemical components (%)
c	si	mn	p	s	mo	cr	v
0.06-0.18	/	0.27-0.63	≤0.035	≤0.035	/	/	/

ASTM A179 tube mechanical properties:

a179 mechanical properties
tensile strength (mpa)	yield strength (mpa)	elongation (%)	hardness (hrb)
≥325	≥180	≥35	≤72

ASTM A179 tube wall thickness tolerance:

a179 seamless, cold-finished tubes
outside diameter in. (mm)	wall thickness tolerance %
	over (+)	under (-)
1½(38.1) and under	20	0
over 1½(38.1)	22	0

ASTM A179 tube outside diameter tolerance:

a179 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 1½(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 tube cut length tolerance:

a179 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 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 tube hydrostatic test pressures:

a179 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]

Our advantages of ASTM A179 seamless tube:

We have professional export team.

Our ASTM A179 seamless tube has been strictly tested.

We have a large number of ASTM A179 seamless tube stocks.

ASTM A179 seamless tubes are available in different sizes,shapes,finishes ets.

We have good service&short delivery time to meet the exacting requirements of your projects

We enjoy close working relationships with our customers working with them from concept through to completion often resulting in economy of design and the cost benefits that go with it.

Seamless pipes shall be manufactured by seamless process and shall be cold drawn.
Heat Treatment: Tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.
Surface Condition: Finished tubes shall be free of scale. A slight amount of oxidation will not be considered as scale.

Mechanical Tests Required

Flattening Test—One flattening test shall be made on specimens from each of two tubes from each lot or fraction thereof.
Flaring Test—One flaring test shall be made on specimens from each of two tubes from each lot or fraction thereof.
Flange Test—When specified as a substitute for the flaring test, for tubes having a wall thickness (actual mean wall) less than 10 % of the outside diameter, one test shall be made on specimens from each of two tubes from each lot.
Hardness Test—Rockwell hardness tests shall be made on specimens from two tubes from each lot. The term lot applies to all tubes, prior to cutting, of the same nominal diameter and wall thickness which are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the same heat which are heat treated in the same furnace charge. When the final heat treatment is in a continuous furnace, a lot shall include all tubes of the same size and heat,heat treated in the same furnace at the same temperature, time at heat, and furnace speed.
Hydrostatic Test—Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the purchaser.