... and thread coupling oilfield and material professional machine YNJ380/35 Make-up and Break-out MachineYNJ380/35 type screw machine is a ... reliable performance and long service life. 2, correspondent for speed, high-grade fast speed, low torque big. 3, Lord, for the ... at the conversion can be. 5, back with a hydraulic clamp walk, to move together with the workpiece. 6, Assembly torque control ...