What materials are used for the pipes, valves, and flanges of 2.5MPa steam?
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For piping steam at 2.5 MPa, what materials should be used for the pipes, valves, and flanges to ensure safety, reliability, and cost-effectiveness?
Standard 20#, flange face RF; the valve is made of carbon steel; tungsten carbide should be used if sealing is necessary
2.5MPa STEAM belongs to medium-high pressure steam, and ordinary carbon steel is sufficient
20# steel is sufficient for the pipes, valves, and flanges of 2.5MPa steam.
20 steel, WCB valves, RF face flanges, internal and external ring gaskets. If there is a budget surplus, use 20 steel from 3087
When the temperature is below 400°C, 20 steel can be used for the pipes, flanges, and valve bodies; above 400°C, 15CrMo can be considered； Flange RF face ； Tungsten carbide (STL) for valve sealing surfaces in steam pipelines ； Use wound gaskets for the shims.
It mainly depends on what your steam is used for. If food-grade standards are required, then stainless steel pipes are necessary; otherwise, for general heating purposes, pipes made of 20# material are sufficient
Generally, at temperatures below 300 degrees Celsius, 20# is sufficient; valves with WCB bodies are suitable for such conditions. For temperatures above 300 degrees Celsius, it is recommended to use 15CrMo
Agree with the views from floors 8 and 9; temperature and purpose need to be considered.