... dredging, and chemical and petroleum industries. SH,SBH,SM centrifugal slurry pumps are mainly used to pump high-hardness, ... metal or rubber. The liner of pump body and impeller for SBH pump are made of hard metal only ... structure, it is easy to adjust the space between impeller and front liner .Can be removed completely when repaired ... drive, and frequency conversion drive devices. Rubber Impeller