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Water wall panels are the main heating surface of boilers, composed of numbers of rows of steel tubes, arranged around the boiler corner. Inside is the flowing water or steam, and the outside accepts the heat of the flame in the furnace of the boiler, mainly absorbing the radiation heat of the high temperature combustion products in the furnace. The working fluid rises in it and evaporates by heat.
The main type of water wall panels our company fabricate is membrane wall.
Membrane water wall is an air-tight structure consisting of pipes and fins.The advantages are less air leakage in furnace; can use pipe-laying wall, less load on steel structure and lower cost of boiler; easy to use suspension structure and improve thermal expansion system, suitable for large-scale mechanized production, high assembly rate, low heat storage capacity and shorten star-up and shutdown time. The disadvantage is that the manufacturing process is complex. Membrane water wall is often used in large capacity, high temperature and high pressure boilers.
The pictures above are membrane walls for one Pakistan project with details of specification below:
| Name | Memebrane Walls |
| Material | ASME SA192M and Q235B |
| Tube size | 63.5*4.5mm |
| Standard | As per ASME/GB standard |
| Equipment | Automatic production equipment |
| Application | Maintenance of Sugar Mill Boiler and Power Plant Boiler |
