Reservior arrangement for use in automotive fuel tank

摘要

The present invention relates to a rotary tank system to be provided inside a fuel tank for vehicles such as automobiles which is characterized in that it basically comprises two parts that are made of a material that can be hot-welded together, and at least a portion each of the contact faces between the first and the second halves of the tank is heated to molten state and subsequently abutted against each other in order to weld the two halves into an integral member.