Industrial demands of utilizing polymers and therefore, the search for more reliable joining techniques is gradually increasing. The use of Hot Plate Welding (HPW), which is one of the simplest and most economical methods of joining thermoplastics, is known to manufacture strong joints. This study reveals that it is possible to join LDPE and HDPE snugly using HPW method with appropriate parameters. In the research, similar and dissimilar polyethylene classes are joined with each other and mechanical properties of the joints are examined in terms of the tensile strength and impact behaviors. Obtained results are compared considering the base materials themselves and between