What must be done to gas piping in contact with earth to prevent corrosion?

To prevent corrosion in gas piping that comes into contact with the earth, the correct approach is to use an approved anti-corrosive method. Corrosion can be a significant issue for underground piping due to moisture, soil chemistry, and other environmental factors. Applying an anti-corrosive treatment—such as coatings, wraps, or cathodic protection—helps create a barrier that protects the pipe from corrosive elements present in the soil.

Using paint is generally not considered adequate for underground applications since paint can crack or wear off over time, exposing the metal to corrosive substances. Installing insulation does not directly address corrosion and is typically used for thermal protection rather than corrosion prevention. Simply increasing the pipe size does not impact the corrosion resistance of the material itself and may not resolve any existing corrosion issues. Employing a recognized anti-corrosive method ensures compliance with safety standards and prolongs the lifespan of the piping system in corrosive environments.