barras de perfuração de 3 mm
Benefits of Sourcing Heavy Slurry Pumps from China
bombas de lama pesadas da china

The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high