Attaching dissimilar materials to a fuel tank by weldment

摘要

A pass-through formed of material unweldable to a non-metallic tank has an adaptor ring formed of material also unweldable to the tank which is welded to the pass-through body. Prior to welding the adaptor ring to the pass-through the adaptor ring is chemically bonded to a mounting ring, which is formed of material weldable to the tank. The assembly thus formed may then be welded to the tank.