Dalian Oil Pipeline Branch in 2005 to open a preliminary review of technology projects concluded recently. The company project on the United States Thyssen pump unit on the wheel pressure, heating disassembly tool development and thermal media nitrogen sealing system regulator device application research project was added to Dalian Branch of the pipeline branch of 2005 technology development plan. According to reports, the United States Thyssen pump unit since the late 80s of last century has been introduced, there is no special tool disassembly, maintenance has become a major problem. Dalian oil transportation branch of the technical staff are concentrated study China's first set of scientific and practical, easy to operate, safe and reliable ladder-pump on wheel disassembly special tools. The development of the tool will fill the domestic has no ladder pump disassembly of special tools for the blank.