Eastman TEFT Engineering [P] Ltd. Supplies Standard Duty Metallic Mine / Construction Pump. Eastman TEFT Engineering [P] Ltd. Offers pumps and connectors. Standard Duty Metallic Mine / Construction Pump is suitable for on-demand, portable, moderately abrasive fluids, and suspended solids. Standard Duty Metallic Mine / Construction Pump is used for mine duty applications, are constructed in aluminum, cast iron, stainless steel and alloy c with elastomer TPE [thermal plastic elastomers] and PTFE options in diaphragms and check valves. These non-metallic pumps are suited for highly corrosive fluids, portable, low abrasive fluids, and suspended solids. These Pumps are constructed in polypropylene and PVDF with TPE [thermal plastic elastomers] and PTFE options in diaphragms and check valves. Because of the non-metallic materials, these pumps can de water high or low PH levels underground.