A cementing pump is a special high-pressure plunger pump used in oilfield cementing operations. It is used to inject cement slurry at high pressure into the annulus between the casing and the formation to achieve cementing and sealing, ensuring the sealing and stability of the wellbore.
A concrete mixer truck is a special engineering vehicle used for transporting and mixing concrete. It is equipped with a rotating mixing drum, which can prevent concrete from setting and ensure that concrete maintains a uniform flow state during transportation. It is widely used in construction sites, road and bridge construction.