... Spec. 7K. 2.Type:Fseries,3NB series,,PZseries drilling mud pumpThe F-Series mud pumps conforms to API Spec. 7K.Type:F-500,F ... -800,F-1000,F-1300,F-1600,F-2200F-Series mud pumps adopt forced lubricating mode to solve the problem of temperature ... pipe in810121212--Dia. of discharge pipe in45555--valveAPI5API6API6API7API7API8 api 7k drilling mud pump