... : 350m4. Operation speed: 11.25ft/s(3.43m/s )(in Max. drum spooling diameter) 4ft /s (1.22m/s )(in Min. drum spooling diameter)5 ... gave of the FIRST oil field WORKOVER RIG in People's Republic of China. Through 50 years' development, the company is ... major workover/drilling tools.With the products exported to U.S, Canada, Cuba, Colombia, Kasakztan, Russia, Venezuela as well as oil ...