Which of the following materials is commonly used for piping in steamfitting?

Steel is commonly used for piping in steamfitting due to its strength, durability, and ability to withstand high temperatures and pressures associated with steam systems. Steel piping can handle the thermal expansion and contraction that occur in steam applications, making it a reliable choice for transporting steam and hot water. Additionally, steel offers good resistance to corrosion when properly coated or treated, enhancing its suitability for various environments, including industrial settings.

Brass and concrete, while used in specific applications, do not have the same advantages in high-temperature steam applications as steel. Brass is typically used for smaller pipes and fittings, often in water supply or heating applications, but it can be less suitable for high-pressure steam. Concrete, on the other hand, is not typically used for piping systems due to its rigidity and lack of flexibility, which are essential traits in steamfitting. Wood is also not a viable option for steam applications because it cannot withstand the high temperatures and is susceptible to degradation over time.