ASTM A210 Seamless Boiler Tubes are carbon steel pipes specifically manufactured for use in boiler tube protection, superheaters, and heat exchangers that operate under medium pressure. Engineered in accordance with ASTM A210/ASME SA210 standards, these seamless carbon steel tubes ensure high thermal conductivity, mechanical strength, and corrosion resistance—making them ideal for demanding industrial systems.

ASTM A210 tubes

One flattening test shall be made on specimens from each end of one finished tube from each lot, but not the one used for the flaring test. Tears or breaks occur at the 12 or 6 o’clock positions on Grade C tubing with sizes of 2.375 in. [60.3 mm] in outside diameter and smaller shall not be considered a basis for rejection. One flaring test shall be made on species-men from each end of the one finished tube from each lot, but not the one used for the flattening test.

Produced through hot-rolling or cold-drawing, ASTM A210 tubes are designed to withstand continuous exposure to steam, pressure, and fluctuating temperatures. Their seamless construction eliminates weld seams, reducing the risk of leakage, failure, or weakness under stress. Cold-finished tubes are normalized or stress-relieved to ensure structural uniformity and durability.

The carbon steel tubing used in A210 offers a cost-effective solution for boiler maintenance and new installations, capable of handling high temperatures and internal pressure conditions. Applications include medium-pressure steam boilers, feedwater heaters, and shell-and-tube heat exchangers in power generation, petrochemical, oil refining, and industrial HVAC systems.

Available in outer diameters from 1/2" to 5", with wall thicknesses up to 12.7 mm, these medium pressure pipes are manufactured to precise tolerances for dimensional accuracy and installation efficiency. Ends can be beveled or plain, and surface treatments such as oiling or varnishing help prevent oxidation during storage and transport.

With superior boiler tube protection and enhanced heat transfer performance, ASTM A210 tubes meet critical requirements for mechanical integrity, thermal endurance, and cost-effectiveness in long-term industrial use.

ASTM A210 Grade C Seamless Boiler and Superheater Tubes
OD (mm)	Wall Thickness (mm)
OD (mm)	2	2.5	3	3.5	4	4.5	5	6	6.5-7	7.5-8	8.5-9	9.5-10	11	12
Φ25-Φ28	●	●	●	●	●	●
Φ32		●	●	●	●	●	●
Φ34-Φ36		●	●	●	●	●	●
Φ38		●	●	●	●	●	●
Φ40			●	●	●	●	●
Φ42			●	●	●	●	●
Φ45			●	●	●	●	●	●
Φ48-Φ60			●	●	●	●	●	●	●
Φ63.5				●	●	●	●	●	●	●
Φ68-Φ73					●	●	●	●	●	●
Φ76					●	●	●	●	●	●	●	●	●	●
Φ80					●	●	●	●	●	●	●	●	●	●
Φ83					●	●	●	●	●	●	●	●	●	●
Φ89					●	●	●	●	●	●	●	●	●	●
Φ95					●	●	●	●	●	●	●	●	●	●
Φ102					●	●	●	●	●	●	●	●	●	●
Φ108					●	●	●	●	●	●	●	●	●	●
Φ114						●	●	●	●	●	●	●	●	●
Φ121						●	●	●	●	●	●	●	●	●
Φ127						●	●	●	●	●	●	●	●	●

Key Benefits

Corrosion Resistance

Tubes resist oxidation and corrosion in steam and flue gas environments, protecting boiler systems from long-term degradation.

Thermal Efficiency

Excellent heat transfer properties support efficient energy use in boiler and superheater systems.

Weldability

Designed for easy fabrication and joining, suitable for bending, welding, and mechanical forming operations.

Cost-Effective

Low carbon content and high machinability reduce processing time and maintenance costs over long-term operation.

Structural Strength

Withstands medium pressure and cyclic thermal loads in industrial heating systems and boilers.

Versatile Applications

Used across industries including oil refineries, thermal power plants, and petrochemical installations.

Technical Specifications

Chemical Composition of ASTM A210 tubes
Grade	C(Max)	Mn	Si(Min)	P(Max)	S(Max)
A1	0.27	Max.0.93	0.10	0.035	0.035
C	0.35	0.29~1.06	0.10	0.035	0.035

Mechanical Properties of ASTM A210 tubes
Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
A1	≥ 415	≥ 255	≥ 30
C	≥ 485	≥ 275	≥ 30

Comparison of ASTM A210, A192, and A179 Tubes
Feature	ASTM A210 Grade A1	ASTM A192	ASTM A179
Material Type	Carbon Steel	Carbon Steel	Low Carbon Steel
Application	Medium Pressure Boilers, Superheaters	High Pressure Boilers, Superheaters	Heat Exchangers, Condensers
Manufacturing Process	Hot Rolled or Cold Drawn	Hot or Cold Finished	Cold Drawn
Tensile Strength (MPa)	≥415	≥325	≥325
Yield Strength (MPa)	≥255	≥180	≥180
Elongation (%)	≥30	≥35	≥35
Max Carbon Content (%)	0.27	0.18	0.06
Corrosion Resistance	Moderate (with coatings)	Good (High pressure service)	Moderate (Low temp environments)
Key Strength	Higher tensile & thicker wall capability	Optimized for high-pressure systems	Excellent thermal conductivity

ASTM A210 / ASME SA210 specifies seamless carbon steel tubes designed for boiler tubes, superheaters, and heat exchangers in medium-pressure systems.

Carbon ≤ 0.27%, Manganese ≤ 0.93%, Phosphorus ≤ 0.035%, Sulfur ≤ 0.035%. Silicon is not specified but may be present in trace amounts.

Minimum tensile strength: 415 MPa, minimum yield strength: 255 MPa, elongation ≥ 30%, with typical hardness ≤ 80 HRB.

Tubes are tested for flaring, flattening, hardness, hydrostatic pressure, and may undergo non-destructive testing (NDT) per ASTM A450/A450M.

Yes. Cold-drawn tubes must be normalized or stress-relieved at temperatures ≥ 650°C (1200°F) to ensure consistent mechanical performance.

Outer diameter: 1/2″ to 5″ (12.7–127 mm). Wall thickness tolerance: +20% / –0% for OD ≤1½″, +22% for larger OD. Length tolerances vary by order.

Widely used in medium-pressure boilers, steam superheaters, feedwater heaters, and thermal power plant pipelines across the energy and petrochemical sectors.

Industrial Applications

ASTM A210 tubes are widely used in industries requiring high-temperature, high-pressure, and durable tubing.

Power Generation

Crucial in boilers and superheaters for generating steam in power plants.

Petrochemical Industry

Used in heat exchangers, condensers, and high-temperature piping in refineries.

Pharmaceutical Industry

Employed in heat exchangers and processing equipment for sterility and stability.

Industrial Boilers

Utilized in various industrial boilers for reliable heating and cooling performance.

Heat Exchangers

Facilitates efficient heat transfer in various industrial processes.

Process Industries

Suitable for reliable fluid and gas transfer in high-temperature and pressure systems.

ASTM A210 tubes