Which pipe material is least susceptible to corrosion from sewer gases?

The material that is least susceptible to corrosion from sewer gases is vitrified clay pipe (VCP). VCP is produced through a process that involves high temperatures and the use of natural clay material, resulting in a dense, hard, and non-porous surface. This characteristic makes VCP highly resistant to the corrosive effects commonly associated with sewer gases, such as hydrogen sulfide.

In sewer systems, gases produced during the breakdown of organic material can lead to corrosion of various pipe materials over time. VCP's chemical composition does not readily react with the sulfide gases, making it an ideal choice for wastewater applications where exposure to corrosive elements is a concern.

Other materials, such as reinforced concrete pipe (RCP), cast iron pipe (CIP), and asbestos cement pipe (ACP), can have varying degrees of susceptibility to corrosion when exposed to sewer gases. While some may offer certain strengths or advantages in specific applications, they are not as inherently resistant to the corrosive environment found in wastewater systems as VCP.