1. Single-row membrane wall: Membrane tubes are arranged on the same plane in turn to form a single-row structure, which is often used in small boilers.
2. Double-row membrane wall: Two rows of membrane tubes cross to form a double-row structure, which is commonly used in small and medium-sized boilers.
3. Three-row membrane wall: Three rows of membrane tubes are arranged crosswise to form a three-row structure, which is often used in large boilers.
4. Multi-row membrane wall: Multi-row membrane tubes are arranged crosswise to form a multi-row structure, and the number and mode of arrangement can be selected as required, which is often used in large utility boilers.