What material is typically recommended for low-pressure steam piping?

The use of steel for low-pressure steam piping is recommended primarily due to its strength, durability, and ability to withstand high temperatures and pressures typically associated with steam systems. Steel has excellent thermal conductivity, making it efficient for transferring steam without significant heat loss. It is also resistant to the mechanical stresses that can occur in steam systems, particularly when subjected to thermal expansion and contraction.

In contrast, materials like plastic, copper, and PVC do not offer the same level of performance for steam piping applications. Plastic is generally not suitable for high-temperature environments, as it can warp or degrade under heat. Copper, while it has good thermal conductivity, is more commonly used in applications like water lines or lower temperature services due to its higher cost and susceptibility to corrosion in steam environments. PVC is not designed to handle the pressure and temperature of steam systems, making it entirely unsuitable for such applications.

Therefore, steel is the go-to choice for low-pressure steam piping due to its strong, reliable characteristics that align with the demands of a steam system.