Type DZYNJ  hydraulic screw deduction machine is combined type of hydraulic machine，It has beautiful modelling, reliable performance, convenient operation and wide range of clamping ,it can do Self-centering clamping work and needn’t change block teeth. This machine is mainly used in oil field to disassemble the casing collar, tubing collar ,oil-well Pump,packer joint ,downhole tools and some columned threaded connectors in oil field.there are two control function : manual control and automatic control. It’s the latest ideal machine for users.