ASTM A179 Pipe

Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger & Condenser Tubes

ASTM A179 is the standard specification for seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Because these tubes are cold-drawn, they possess superior dimensional accuracy, a smooth surface finish, and excellent thermal conductivity. They are designed to be expanded into tube sheets and are essential components in refineries and petrochemical plants.

Technical Specifications

Feature	Details
Standard	ASTM A179 / ASME SA179
Grade	Low Carbon Steel
Outside Diameter	1/8" to 3" (3.2mm to 76.2mm)
Wall Thickness	0.035" to 0.500" (0.9mm to 12.7mm)
Manufacturing	Seamless Cold-Drawn
Length	Fixed Length, Single Random, Double Random

Mechanical Properties

Property	ASTM A179 Value (Min)
Tensile Strength	47,000 psi (325 MPa)
Yield Strength	26,000 psi (180 MPa)
Elongation (in 2 in.)	35%
Hardness (Rockwell B)	72 HRB Max

Chemical Composition (%)

Element	Percentage
Carbon (C)	0.06 - 0.18%
Manganese (Mn)	0.27 - 0.63%
Phosphorus (P)	0.035% Max
Sulphur (S)	0.035% Max

Features and Benefits of ASTM A179 Tube

Cold-drawn process ensures exceptional surface smoothness and dimensional precision
High thermal conductivity for efficient heat transfer in energy systems
Excellent ductility for easy bending, coiling, and expansion into tube sheets
Subjected to rigorous testing including Flattening, Flaring, and Hydrostatic tests
Low carbon content provides good weldability for assembly maintenance
Consistent performance in sub-zero and moderately high temperatures

Applications & Uses

Heat Exchangers

The standard tube for shell and tube heat exchangers used in heating and cooling fluids.

Condensers

Widely used in steam condensers for power generation and refrigeration cycles.

Petrochemical

Essential for preheaters and processing units in refineries and chemical plants.