| Message: | Bauer is from Brazil and has purchased hydraulic cartridge valves from AAK 6 times. In the second half of last year, they developed a drilling equipment. The hydraulic pressure control cartridge valve used on the equipment was sampled from a local hydraulic cartridge valve manufacturer in Brazil. The equipment commissioning was not smooth, and the impact of the drilling rig during startup and shutdown is large, which is not acceptable to the customer. The root cause is the unstable unloading of the hydraulic pressure control cartridge valve after overloading. The original hydraulic pressure control cartridge valve manufacturer stated that it was manufactured according to the drawings and its accuracy reached the standard. Bauer was helpless. |
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