Manufactured as one piece with two fuel tank shells (1,2), positioning devices (6,7) fit near a welding seam (5) on areas of the shells to be interlinked by material and on adjacent edges (3,4) of the shells used for welding. They also have the same materi...

A soluble lubricating surface-treated stainless steel sheet with excellent shapability for fuel tanks, comprising a substrate having on both surfaces or one surface thereof a soluble lubricating resin film. Preferably, the soluble lubricating resin film ma...