... equipments for petroleum machinery drilling and dredging projects. 3000 series diesel engine coupling gear box setDeclared speed: 1000~1500 ... , the plant has formed hydraulic coupling and hydraulic transmission unit series products of 280, 420, 560, 650, 670, 750, ... , 1150,etc; oil-extended adjusting centrifugal turbine torque converter series products with working chambers diameter of 480, 550, 650, ...