Usage: During the process of secondary lining, block the concrete and clamp the waterstop. Advantages: Our company uses a combination of steel and wood as the plug plate. Compared to the previous method of using wooden board plug construction, the steel plug can firmly clamp the buried waterstop to avoid the bending of the waterstop, nail holes, damage and leakage during disassembly and assembly in old-fashioned construction. This saves wood costs, reduces the safety risks of cutting wooden boards during construction, and makes installation and disassembly faster and more convenient, The waterstop has good ductility, avoids bending, effectively ensures project quality, improves construction efficiency, and shortens construction period.