What are bimetallic tubes?

Bimetallic tubes are made of bi-metals like copper-copper alloys, copper-stainless steel, titanium-copper alloys, and others. The outer copper or titanium offers high strength, while the inner copper alloy, stainless steel, etc., offers high corrosion resistance. Bimetallic tube is composed of two different materials: usually inner material is a corrosion resistant alloy (copper, aluminium-brass, titanium) whereas the outer material is a high-stress resistant alloy (stainless steel, carbon steel, titanium). It is, however, possible to manufacture bimetallic tubes with any material combination.

bimetallic tubes material ferrules

What is the fabrication process of the bimetallic finned tube?

In this fast and modern world, the demand for high-quality bimetallic fin tubes has become essential to increase efficiency. For example, the need for finned tubes for heat exchangers reduces repair and costs in electricity supply. Titanium bimetallic finned tubes are the first choice for many such applications to reduce effort and last long.

Bimetallic low-finned tubes like copper-stainless steel are also cost-effective and helpful in many applications across various sectors. Its fabrication includes a tube liner, and the assembled tube passes through many rotatable finning discs to press while extruding fins progressively.

What is the construction material of bimetallic heat exchanger tubes?

Heat exchanger tubes must withstand high temperatures and pressure apart to have high corrosion resistance to transform liquids and gases. Hence the best bimetallic heat exchanger tubes are ideal for providing high strength and corrosion resistance.

The exterior construction materials can be titanium, stainless steel, carbon steel, and others that withstand high temperatures and stress. And the inner construction material can be copper, aluminum-brass, chromium, and others with excellent corrosion resistance. The suitable construction material to make bimetallic tubes depends on the application and its high temperature, pressure, and corrosion resistance needs.

What is the use of bimetallic tubing?

Bimetallic tubing has existed for over 70 years since the 1950s as the best technical and economical solution to produce high-performance heat exchangers. As the name suggests, the tubing has two metals, one on the inside and one on the outer. Also, it will have fins to increase the performance and reduce the losses.

Many metals and alloys are used in making bimetallic systems with ferrules to attach to others to reduce costs and increase efficiency. Apart from its use in thermal exchangers, there are also many uses for tubes made from bimetals like oil & gas, nuclear reactors, etc.