ASTM A179 is equivalent to China's No. 10 high-quality low-carbon steel. The American ASTM standard of high-quality low-carbon structural steel has strict requirements on the surface finish of the steel pipe and the hardness of the steel. There is no perfect match for domestic steel grades. No. 10 high-quality carbon steel can only be said to be similar or similar to A179, but it cannot be completely replaced. Simply replacing with No. 10 steel may result in unqualified inspection. A179 is suitable for cold drawn high-quality low-carbon seamless steel tubes for heat exchangers and condensers.
Sulfur: MAX 0.035%
Size range of ASTM A179 seamless steel pipe
Outer - diameter: The outer - diameter range is from 1/8 inch to 3 inches, that is, 3.2mm to 76.2mm.
Wall thickness: however, it does not apply to pipes with an outer diameter less than 1/8 inch (3.2mm) or a wall thickness less than 0.015 inch (0.4mm) for mechanical property requirements. While the standard does not specify a maximum wall thickness, the actual thickness is typically determined based on application needs.
Length: The standard does not specify the length of the steel pipe. Usually, the length of seamless steel pipes is 6m to 12m, and it can also be customized according to requirements.
Characteristics of ASTM A179 seamless steel pipe
1. Low Carbon Steel Composition
Contains a maximum of 0.06% carbon, ensuring good ductility, easy forming, and excellent weldability.
2. Cold-Drawn Manufacturing
Produced using a cold-drawing technique for enhanced dimensional accuracy, fine surface finish, and improved strength.
3. Superior Heat Transfer Efficiency
Designed for heat exchangers and condensers, offering excellent thermal conductivity.
4. Good Forming Capability
Supplied in an annealed state, making it easy to bend, flare, and expand without cracking.
5. Consistent Wall Thickness
Maintains uniform thickness throughout, contributing to reliable thermal performance.
6. Optional Corrosion Protection
Performs well in clean environments; can be externally coated to resist corrosion in harsher conditions.
7. High-Quality Assurance
Undergoes strict inspections such as hardness, hydrostatic, and flaring tests to ensure dependable operation.
Application of ASTM A179 seamless steel pipe
ASTM A179 seamless steel pipes are mainly used in heat exchange equipment, and can also be used in machinery manufacturing, shipbuilding and other fields, as follows:
1. Heat exchange equipment: Due to its good thermal conductivity and corrosion resistance, it is a commonly used pipe material for tubular heat exchangers, condensers and similar heat transfer equipment.
2. Boiler system: This seamless pipe can withstand certain high temperatures and high pressures and can be used for related pipes in boilers to ensure heat exchange efficiency and stable operation of the boiler.
3. Chemical industry: ASTM A179 seamless pipe has a certain tolerance to some chemical media and can be used to transport chemical media such as acids and alkalis. It can ensure the safety and stability of the pipeline to a certain extent and reduce the risk of medium leakage.
4. Shipbuilding Industry: It can be used to manufacture marine boilers and superheaters, as well as Class I and Class II pressure piping systems. Specially treated (such as adding copper) to create seawater corrosion-resistant versions, it can operate stably in marine environments.
5. Mechanical manufacturing: It can be used to manufacture hydraulic cylinder tubes, bearing sleeves and other mechanical parts. With its good mechanical properties, it can meet the use requirements of parts and ensure the normal operation of mechanical devices.
Read more: ASTM A106 Seamless Carbon Steel Pipe
