... pump runs steadily, high reliability, slightly vibration,low noise. HZT stainless steel chemical pump Product: HZT series chemical passage pumpCharicteristics: : runs steadily ... %Casting materials:101,102,302,303,304,305,306(316),307,001,044,316L,TA2,2Cr17,310S,501, Cr30, etc. HZT stainless steel ...