型式Type三缸单作用活塞泵TriplexSingleActingPistonPump冲程长度StrokeLength:203mm额定功率Ratedpower650HP（485KW）吸入管径SuctioninletΦ254mm额定转速Ratedspeed150SPM排出管径DischargeoutletΦ83mm齿轮传动比Gearratio4.07重量Weights13600KgTheSL3NB-650mudpumpisresearchedandmanufacturedbyQingzhoupetroleummachineryfactory.Thedesigncharacteristicisanoptimizationofparameter.itcanincreasethestrokeproperly,lowerthespeedreasonably,improvethesuctioncapabilityofthepump,prolongthelifeofthewearingparts.Thepumpsareusedforoil-field,otherindustrialandminingestablishmentsandfortheoildrilling,wellworkover.Theyaremainlyinstalledon1500mrig.TheseriespumpproducesaccordingtoSY5138ofthepetroleumindustrystandardstrictly,andcarrythroughfactory'sexperimentaccordingtothestandard)