What type of materials should carbon steel liquid lines use?

Carbon steel liquid lines should utilize A106 seamless or A333 seamless materials because these specifications are specifically designed for high-pressure applications and offer excellent strength and durability. A106 is intended for high-temperature service, while A333 is developed for low-temperature applications, both ensuring that the integrity of the piping is maintained under varying operating conditions.

The seamless characteristics of these materials reduce the risk of leaks and failures at welded joints, which is crucial in high-pressure environments where the potential for catastrophic failure is significant. Both specifications are widely accepted in the industry for transporting gases and liquids and provide the necessary mechanical properties demanded for safe operation.

While other materials like galvanized steel and welded steel have their uses, they do not provide the same level of performance in high-pressure situations as A106 and A333 do. Galvanizing can protect against corrosion, but it is not suitable for high-pressure applications as the zinc coating can weaken under high temperature. Welded steel may be used but typically does not have the same reliability and structural integrity as seamless options at high pressures. ASTM approved alloys can also be suitable; however, they must meet specific requirements that may not always align with the characteristics of carbon steel liquid lines.