ASTM A179 heat exchanger tube

Stardand :

ASTM A179,ASME SA179 Seamless cold-drawn Heat-Exchanger and Condenser Tubes
ASTM A179,ASME SA179 steel tubes covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.
ASTM A179,ASME SA179 covers tubes 1/8 to 3 inch. [3.2 to 76.2 mm], inclusive, in outside diameter

ASTM A179,ASME SA179 Seamless Heat-Exchanger and Condenser Tubes – Details:

Manufacture: Seamless process ,cold drawn.
Wall thickness(WT): 2.0 mm——14.27 mm.
Outer diameter (OD): 12.7mm——76.2 mm
Length: 20FT or 40FT, specified length as required.
Ends: Plain End, Beveled End, Treaded

Additional Info:

Port of Shipment: Tianjin, China
Payment Terms: T / T, LC
Delivery: 7-15 days after payment
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required

Manufacture:

ASTM A179,ASME SA179 steel tubes are made by the seamless process and shall be cold drawn.

Heat Treatment of ASTM A179,ASME SA179:

ASTM A179,ASME SA179 steel tubes are heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.

Chemical Composition of ASTM A179,ASME SA179 Seamless Heat-Exchanger and Condenser Tubes:

Material	Chemical Composition(%)
	C	Si	Mn	P	S
ASTM A179	0.06-0.18	≤ 0.25	0.27-0.63	≤0.035	≤0.035

Mechanical Propertie of ASTM A179,ASME SA179 Seamless Heat-Exchanger and Condenser Tubes:

Grade	ASTM A179
Tensile Strength(MPa)	≥325
Yield Strength(MPa)	≥180
Elongation,%	≥35
Hardness, HRB	≤72

Note —Tubing smaller in outside diameter and having a thinner wall than indicated in this specification is available. Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in outside diameter or with a wall thickness under 0.015 in. [0.4 mm].

The Dimensional Tolerances of ASTM A179,ASME SA179 Seamless Heat-Exchanger and Condenser Tubes :

Outside Diameter, in. [mm]	Wall Thickness, %
	0.095[2.4] and Under		Over 0.095 to 0.150 [2.4 to 3.8], incl		Over 0.150 to 0.180 [3.8 to 4.6], incl		Over 0.180,[4.6]
	Over	Under	Over	Under	Over	Under	Over	Under
Seamless, Cold-Finished Tubes
	Over				Under
1 1 ⁄ 2 [38.1] and under	20				0
Over 1 1 ⁄ 2 [38.1]	22				0

Tolerances of Outside Diameter

Outside Diameter,in. [mm]	Permissible Variations, in. [mm]
Outside Diameter,in. [mm]	Over	Under
Under 1 [25.4]	0.004 [0.1]	0.004 [0.1]
1 to 1 1 ⁄ 2 [25.4 to 38.1], incl	0.006 [0.15]	0.006 [0.15]
Over 1 1 ⁄ 2 to 2 [38.1 to 50.8], excl	0.008 [0.2]	0.008 [0.2]
2 to 2 1 ⁄ 2 [50.8 to 63.5], excl	0.010 [0.25]	0.010 [0.25]
2 1 ⁄ 2 to 3 [63.5 to 76.2], excl	0.012 [0.3]	0.012 [0.3]
3 to 4 [76.2 to 101.6], incl	0.015 [0.38]	0.015 [0.38]
Over 4 to 7 1 ⁄ 2 [101.6 to 190.5], incl	0.015 [0.38]	0.025 [0.64]
Over 7 1 ⁄ 2 to 9 [190.5 to 228.6], incl	0.015 [0.38]	0.045 [1.14]

Tolerances of Length

Method of Manufacture	Outside Diameter, in. [mm]	Cut Length,in. [mm]
Method of Manufacture	Outside Diameter, in. [mm]	Over	Under
Seamless, cold-finished	Under 2 [50.8]	1 ⁄ 8 [3]	0 [0]
	2 [50.8] and over	3 ⁄ 16 [5]	0 [0]
	2 [50.8] and over	3 ⁄ 16 [5]	0 [0]

Mechanical Tests Required:

(1) Flattening Test—One flattening test shall be made on specimens from each of two tubes from each lot or fraction thereof.
(2) Flaring Test—One flaring test shall be made on speci- mens from each of two tubes from each lot or fraction thereof.
(3) 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
(4) Hardness Test—Rockwell hardness tests shall be made on specimens from two tubes from each lot.
(5) Hydrostatic Test—Each tube shall be subjected to the hydrostatic test, or a nondestructive electric test

Surface Condition:

Finished tubes shall be free of scale. A slight amount of oxidation will not be considered as scale.

Application:

ASTM A179,ASME SA179 seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.