... -sand 3.wear-resisting property 4.hard chromium plated Long Plunger Anti-sand PumpStandardThe executive standard of the products is GB ... The pump adopts the structure of short pump barrel, long plunger , sinking sand under the pump and oil-taking laterally. It ... mineralization.Main Technical Parameter Diameter(mm)The length of the plunger(m)The length of the pump barrel(m)Stroke range ...