A top drive is an essential mechanical device in oil field drilling since it provides the necessary torque for the drilling operations.Manufacturers in the oil and gas industry typically perform in-housing testing and classify the Safe Working Load of top drives.Testing a top drive requires a unique test stand, thus making testing top drives from o
Abstract The first human infected with the Covid-19 virus was traced to a seafood market in Wuhan, China.Research shows that GROOMING CREAM there are comparable types of viruses found in different and mutually distant areas.This raises several questions: what if the virus originated in another location? How will future waves of epidemics behave if
The film thickness of a ball-on-disc contact lubricated with four greases of different formulations was Heavy Duty Walkers measured under different operating conditions until starvation.Two polymer-thickened greases and two lithium-thickened greases, formulated with base oils of different nature and/or viscosity, were tested.The central film thickn