With the increase in technological advance, lined and clad materials are getting popular in Process industries. By combining two materials, we can get the advantage of the two materials at low cost. In this lecture, I will teach you about lined & clad material used in piping.
Lined Pipe
The lined pipe has a Mechanical bonding between pipe and line material.
- By applying a lined material to carbon steel pipe, we can get the benefit of anti-corrosion property of lined material and strength of carbon steel
- Commonly used lined material are
- PTFE
- Rubber
- Glass
- FRP (Fiber reinforced plastic)
You can see the images of lined pipe.
Image – PTFE India
Advantages of Lined Pipe
- A lined pipe can withstand in tough chemical environments
- And Also offer abrasion resistant property with hard lined material
- It is a cost-effective solution for non-critical services
Disadvantages of Lined Pipe
- Lined Pipe has a limitation of non-metal such as it cannot be used in high temperature and pressure services
- The lined pipe is manufactured in small length pipe spools hence, large no of flange joints in line, which increased maintenance costs and chances of leakages.
Clad Pipe
A clad pipe has a Metallurgical bond between pipe and cladding material
- The cladding is done by an explosive bonding process or by welding of clad material on a pipe
- High strength carbon steel materials are cladded with high corrosion resistant metal to achieve cost benefits
- Here you can see the clad pipe
Image – Butting.com
Advantages of Clad Pipe
Clad carbon steel can withstand in tough chemical environments.
- Clad pipe can be used in high temperature and pressure services
- It is cost effective for critical services as carbon steel can be used with cladding of exotic materials.
Disadvantages of Clad pipe
- Fabrication of clad material is difficult, a special skill required for welding
- Clad pipes are costly compared to lined pipe
