Seamless Steel Tube for Heat Exchanger and Condenser

This news page covers boiler and heat exchanger tubes in relation to Seamless Steel Tube for Heat Exchanger and Condenser. The content highlights standards such as ASTM A179, EN10216-1, EN10216-2, DIN17175 and size and dimension requirements, end-use applications. Buyers can use the page to check whether the product, grade, size range, inspection requirements and delivery details match their inquiry.

Should cold-rolled or hot-rolled tubes be selected for heat exchangers?

Cold-rolled tubes are more suitable for heat exchangers. The cold-rolling process offers the following advantages:

1.Surface Quality and Mechanical Performance:

Cold rolling allows metal materials to be processed at room temperature, resulting in improved mechanical properties and surface quality. Cold-rolled tubes have smooth surfaces and high dimensional accuracy, which enhances heat exchange efficiency.

2.Corrosion Resistance and Pressure Endurance:

The cold-rolling process refines the metal's grain structure, improving its strength and toughness. This makes cold-rolled tubes more resistant to corrosion, high temperatures, and pressure, making them ideal for harsh environments.

3.Manufacturing Precision:

Cold-drawn tubes have high manufacturing precision and uniform wall thickness, improving the seal and pressure resistance of the piping.

4.Comparison with Hot-Rolled Tubes:

While hot-rolled tubes offer higher production efficiency and lower costs, their surface quality and mechanical properties are inferior to those of cold-rolled tubes. Hot rolling can introduce residual stress within the metal, affecting its overall and localized buckling characteristics. Additionally, the surface of hot-rolled tubes tends to be rough, and their structure and properties are less uniform than those of cold-rolled tubes.

Conclusion:

Cold-rolled tubes are more widely used in heat exchangers, especially in high-temperature, high-pressure, and corrosive environments, where they demonstrate superior stability and durability.

Seamless Steel Tube for Heat Exchanger and Condenser

ASTM A179

DIN17175 ST35.8/ST45.8/15Mo3/10CrMo910

EN10216-1 P235TR1/P235TR2/P265TR1/P265TR2

EN10216-2 P235GH/P265GH/13CrMo4-5/10CrMo9-10

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