SL3NB—1600 Drilling mud pump is Triplex single action piston pump, Design characteristics is an optimization parameter, increased the stroke properly, lowered the speed reasonably, improved the suction capability of the pump, prolonged the service life of wearing parts The pump used for oil-field and other industrial and mining establishments; Used for the drill, well workover and transport the liquid media；Mainly installed on 45-90 rig.