... pull hydraulic cylinder to provide axial push-pull forces for assembling and disassembling the workpiece.The equipment is ... and geological fields and used for assembling, disassembling, repairing and testing of drilling tools, downhole tools, testing tools, tools for well cementation and drilling, ... system: 70 140psi 6. Tubing diameter ranges of suitable for the workpiece Φ3-1/8’’~12’’ (Φ80~304mm) ...