Bucking units, also known as makeup and breakout machines or bucking machines, are professional oilfield equipment for high-torque threaded connections in the oil and gas industry. They are designed to ensure thread integrity and prevent damage during make-up and break-out operations. Our bucking machines support precise makeup, stable breakout, and connection integrity testing for casing, tubing, drill pipes, and downhole tools. These units replace manual wrenches to deliver consistent torque control and meet API standards for OCTG production and field service. Our bucking units include three main types: wedge roller, fully rotational, and planetary clamping. Wedge roller models offer stable, high-rigidity clamping for standard API threads. Fully rotational units provide full-circle rotation and top-opening design, ideal for downhole tools and large-diameter pipes. Planetary clamping models deliver compact, high-precision grip for premium connections and small-to-medium pipes. Widely used in OCTG production lines, pipe repair shops, and downhole tool assembly, these bucking units deliver high speed, large output, and reliable performance for mass tubular processing.