February 2019

Special Focus: Materials Manufacturing

Fabrication of clad equipment and piping—Part 1

For pressure vessels, heat exchangers and piping in corrosive services, the materials in contact with the process are often required to be high alloys to provide a reliable service life.

Panchal, A., Reliance Industries Ltd.; Carmona, R. K., Daru, K., Desai, J., Irfan, M., Shargay, C., Fluor

For pressure vessels, heat exchangers and piping in corrosive services, the materials in contact with the process are often required to be high alloys to provide a reliable service life. When the design conditions call for thick walls, the use of carbon or low-alloy steel (LAS) clad or overlay with a high alloy is often a significant cost savings compared with the use of solid high alloys. Part 1 discusses the various manufacturing processes for clad plates and pipes, along with aspects that affect the decision between using cladding vs. weld overlay. Some precautions for selecting the appropriate base metals are provided, along with factors to consider when selecting weld overlay processes

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