SL3NB—1300 Drilling mud pump is Triplex single action piston pump, the design characteristics is an optimization parameter, it can increase the stroke properly, lower the speed reasonably, improve the suction capability of the pump, prolong the service life of wearing parts The pump is used for oil-field and other industrial and mining establishments and for the drill, well workover and transporting the liquid media and mainly installed on 25-45 rig.