Material Property and Allowable Stress of Pipe Fitting

According to the application scope and the performance feature of pipe fitting and pressure container, the paper explains each different specifıcation and conception in calculation of wall thickness, additive value of wall thickness, sellection of material property and determination of allowable stress, etc. In the end of article, the author points out that the pressurized. equipment for pipeline should be devided into scopes of pipe fitting and their designs should be in accordance with pipeline designing codes.