On ECPlaza since 2020
Location: Beijing, China
Business Type: Manufacturer, Distributor, Service
Square Kelly and Hexagonal Kelly Kelly is located in the top of the drill string, with square and hexagonal. In rotary drilling, when it's drilling, kelly connected with square bushing and rotary bushing, transfer the ground rotary torque to drill...
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jessica ( Orchid Energy Co.,Ltd )
(20~4000 Characters)
Listed on Feb 16, 2023