Fuel tank and method of making the same

摘要

A fuel tank for an automobile includes a pair of containers formed by drawing a metal plate. Each container has an opening and a flange formed along an edge of the opening. A side wall of the container has a concavo-convex portion shaped to correspond to a component adjacent to the fuel tank. Each flange is formed into a curved configuration conforming to the concavo-convex portion. The flanges are superposed and welded to each other by laser beam welding.