Topics: Piping and plumbing materials; Kinds of joints; Drawings; Joining metal pipes Learning Objectives: --- State the definition of piping. --- Explain why joints are sometimes brazed instead of soldered. --- Explain how to assemble a screwed joint. --- Identify different types of pipe joints. --- Identify piping-system components shown in a single-line drawing. --- Define electrochemical corrosion. Source : TPC Training Systems web page : http://tpctraining.com.