KSH heavy-duty slurry pump and KSG (H) gravel pump are mainly selected for slurry discharge of shield engineering. The conveying medium is mud, which is mainly the cut soil material and the mixture of soil slag and mud water. KSH heavy-duty slurry pump is mostly used for slurry inlet pump. This type of slurry pump is of double-layer shell structure. The inner flow passage parts are replaceable high chromium wear-resistant metal, and the outer pressure bearing parts are high-strength cast iron. You can choose coupling direct drive or belt drive. KSG (H) gravel pump is a single-layer shell structure. The flow passage parts in contact with the slurry are made of high chromium wear-resistant metal. The pump outlet direction can rotate freely. Considering the construction space in the tunnel, it is generally driven by variable frequency motor direct connection.