Bimetallic Tubes

Copper Bimetallic heat exchanger tubes manufacturer in India

s the name suggests a bimetallic tube comprises of two disparate materials. Typically the inner metal tends to be an alloy that has good corrosion resistance. For instance, alloys of titanium, copper or even aluminium-brass could be used as the inner coat. Whereas the outer metal layer is an alloy with high resistance to stress such as stainless steel, titanium or carbon steel. It is, however, possible for bimetallic tube manufacturers to fabricate bimetallic products with the combination of any material.

In applications where the components are exposed to high pressures and corrosive conditions, the use of bimetallic finned tubes sanctions a considerable economical savings, especially if compared to a tube composed of a single alloy, because the use of precious elements is kept to the minimum during its production. Industries like the chemical, petrochemical, as well as the food processing and refrigeration industries, use the bimetallic heat exchanger tubes for the transference of heat. Since this tube is both stress resistant and has good corrosion resistance, it is able to withstand elevated temperatures. Furthermore, the appropriate alloy selected for heat exchangers in nuclear, electric, thermal and geothermal power plants proves to deliver an efficient service and the Bimetallic Tubes having a longer life. At many industries, there are several inspections carried out to check the integrity of the tube. Generally, tests such as Chemical Composition, Boroscopic Inspection, Mechanical Properties, Pneumatic Test, Hydrostatic Test, Pulling Test and an Eddy Current Test are commonly administered to the bimetallic composite tube

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Table of Content

• Bimetallic Tubes Dimension Standard

• Most famous types of Bimetallic Tubes

• Bimetallic Tube Materials

• Bimetallic Tubes Ferrules

• Inspections and Tests of Bimetallic Tubes

Bimetallic Tubes Dimension Standard

Standard Dimensions - Bimetallic Tubes
Outside Diameter	Outside Thickness	Inner Thickness	Length	Ferrule Length
(mm) (inch) 6.00 ÷ 114.30 ½”÷4,5”	(mm) (BWG) 0.711 ÷ 7.21 22 ÷ 2	(mm) (BWG) 0.51 ÷ 3.05 25 ÷ 11	(m) (ft) 0.3 ÷ 20 1 ÷ 66	(mm) (inch) 0 ÷ 500 0 ÷ 20

Most famous types of Bimetallic Tubes

We also stock sandvik bimetallic tubes in copper, titanium, aluminium-brass, Steel 2RE69 & Zirconium 702 material

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Bimetallic Tube Materials

Materials - Bimetallic Tubes
Outer Tube	Inner Tube	Ferrules
SA 179 / A 179 - Carbon Steel SA 214 / A 214 - Carbon Steel SA 213 / A 213 - Stainless Steel SA 312 / A 312 - Stainless Steel SB 111 / B 111 - Copper & Cu Alloys SB 523 / B523 - Zirconium & Zr Alloys SB 338 / B338 - Titanium & Ti Alloys	SA 179 / A 179 - Carbon Steel SA 214 / A 214 - Carbon Steel SA 213 / A 213 - Stainless Steel SA 312 / A 312 - Stainless Steel SB 111 / B 111 - Copper & Cu Alloys SB 523 / B523 - Zirconium & Zr Alloys SB 338 / B338 - Titanium & Ti Alloys	SA 179 / A 179 - Carbon Steel SA 214 / A 214 - Carbon Steel SA 213 / A 213 - Stainless Steel SA 312 / A 312 - Stainless Steel SB 111 / B 111 - Copper & Cu Alloys SB 523 / B523 - Zirconium & Zr Alloys SB 338 / B338 - Titanium & Ti Alloys

Bimetallic Tubes Ferrules

Without Ferrules

 

With Ferrules

 

Inspections and Tests of Bimetallic Tubes

• Hydrostatic Test
• Pneumatic Test
• Pulling Test
• Boroscopic Inspection
• Eddy Current Test