EXTERNAL THREADED BRASS TRANSITION: It is a connection element with teeth on the outer part of the brass part used to provide the transition between polyethylene (PE) plastic pipes and metal pipes. Brass is a metal frequently used in such connection parts due to its high durability, resistance to corrosion and workability. The teeth on the outer part are designed to provide sealing and strengthen the connection. There are many types of externally threaded brass transition parts produced in accordance with different pipe diameters and thread sizes. In this way, it is possible to find a suitable option for every type of connection needed in different projects. The plastic part is welded to the plastic part of the pipeline by butt welding or using a suitable EF additional part. It is suitable for natural gas and water lines.