This document describes hydraulic static pile drivers manufactured by Changsha Tianwei Engineering Machinery Manufacturing Co., Ltd. It discusses how the pile drivers work using hydraulic systems to steadily jack in precast piles quietly. It provides details on the core structures like the driving mechanism and moving mechanism. The document also outlines new designs for clamping mechanisms, driver cabs, and side piling mechanisms. Customers can choose from 40 models ranging from 60 to 1200 tons with various clamping kits and piling functions.