For which conditions should uncoated thread or socket welded joints not be used?

Uncoated thread or socket welded joints should not be used in contact with soil or in situations where corrosion can occur due to their vulnerability to degradation. When these joints are exposed to moisture, dirt, and other environmental factors commonly found in soil, they are at a higher risk for corrosion, which can lead to leaks and failures in gas piping systems.

Corrosion compromises the integrity and longevity of the joints, making them unsafe for use in such conditions. Therefore, the use of coated or corrosion-resistant materials is essential in locations where these environmental conditions are present to ensure the safety and reliability of gas installations.