Introduction:LRB series are single stage single suction cantilever centrifugal pumps. Under the case of low abrasion, they are suitable to deliver suspension liquid whose solid consistency less than 35% （against weight）, solid partical size less than 0.5mm(sometimes a few solid matters less than 20mm permitted), alkali consistency less than 350g/l. They are also suitable to deliver low corrosive sewage and slag that contains acid and alkali. Under non abrasion case, the medium’s temperature can reach 80℃, maximum 140℃; under abrasion case,the temperature can reach 80℃ ,maximum 100℃