ASTM A179 Carbon Steel Pipe Specification

2. Seamless API 5CT Casing Pipe - Tianjin United Steel Pipe

ASTM A179/A179M

ASTM A179/A179M (ASME SA179) pipes are designed with seamless cold-drawn low-carbon steel tubes. It is mainly used in tubular heat exchangers, condensers, and other heat transfer equipment.

Required inspections and tests: hardness, flattening, flaring, flange, and hydrostatic tests.

The manufacturing process is seamless, and the tubes are cold-drawn to provide unmatched strength and longevity.

We analyze heat and products thoroughly. This ensures our pipes meet the needed chemical compositions. These include carbon, manganese, phosphorus, and sulfur.

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Specification

Standard: ASTM A179
Procedure: SMLS
Dimensions: 3.2mm -76.2mm, 1/8″ – 3″, DN6 – DN80
Thickness: 1.65-7mm
Unit Length: 3000 mm – 25000 mm
Steel Grade: SA179
Surface Coating: Varnishing, Oiling, Hot Dip Galvanizing
End Type: Square cut, Plain, Bevelled, Threaded, Socket,
Joint Method: Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining: Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

seamless steel pipe_seamless vs welded pipe

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Dimensions

Outside Diameter：	1⁄8 to 3 in. [3.2 to 76.2 mm]
Wall Thickness：	–
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].

Chemical Requirement

The steel used in ASTM A179/A179M steel pipes has the correct carbon, manganese, phosphorus and sulfur composition. UNIASEN will perform rigorous thermal analysis and product analysis.

Chemical Composition
Carbon, %	0.06–0.18
Manganese, %	0.27–0.63
Phosphorus, max, %	0.035
Sulfur, max, %	0.035

Mechanical Requirement

ASTM A179/A179M pipes undergo a series of tests including hardness, flattening, flaring, flange and hydrostatic tests.

Tensile Properties
Tensile strength, min, ksi [MPa]	47 [325]
Yield strength, min, ksi [MPa]	26 [180]
Elongation in 2 in. or 50 mm, min, %	35

Why Choose UNIASEN?

We provide detailed measurements of ASTM A179/A179M pipe sizes. This includes outside diameter, wall thickness and length.

We offer machining services, with standard or custom sizes, to tailor steel pipe to your needs.

The manufacturing process is seamless and cold drawn, ensuring the best quality for the steel grade.

We offer a range of surface coatings to increase corrosion resistance and extend the life of the pipe. End types and fitting methods are designed for easy installation and secure connections.

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