GDL vertical multistage pipeline pump is designed on the basis of the virtue of type ISG Vertical centrifugal pump. It adopts the form of separated section in construction. The inlet and outlet of the pump are designed underneath, forming a single line. It also adopts the best waterpower model. The balance of waterpower resolves the problem of axial motion. The remained axial motion is beared by ball bearing. It functions well with lower noise. This kind of pump occupies small area and is installed very easy.The outward appearance is made of stainless steel. It is useful for connecting several parallel pumps in high-rise construction to replace the single pump so as to simplify electric control equipment.