Abstract: How to build a gas turbine pipeline part library (PPL) based on UG platform is introduced, which includes the requirements of building the PPL, the structure of the PPL, and the method of developing the PPL. By analyzing the shape features of gas turbine’s common pipeline parts, feature parameters of all kinds of pipeline parts are extracted, which are classified to obtain templet models of similar parts. Finally, the PPL which contains eight kinds of pipeline parts is established. The PPL is easy to use and has good abilities of extension and maintenance

Key words: computer application, gas turbine, pipeline part library, feature extraction