The Long Weld Neck Assembly is comprised of a male or female flange with an extra long reinforced neck, a seal ring, a male or female blind flange, and a complete set of studs and nuts. The long weld neck is typically used in pressure vessel applications where the reinforced neck thickness is required to match or replace the material that removed from the shell of the pressure vessel. The blind flange can also be replaced with a weld neck flange if continuous piping is required.