The acoustic shell for steam mufflers is recommended to be made of stainless steel in our company. The connecting pipes should be determined based on the steam operating conditions of the equipment. The three commonly used materials for the connecting pipes are: 20G, 304 (0Cr18Ni9), and 316 (1Cr18Ni9Ti/0Cr18Ni10Ti) stainless steel, as well as alloy steel pipes suitable for high temperature and high pressure.