Field fabricated is typically made from 16 gauge carbon steel, all welded, per local codes, which is then externally treated with fireproofing.
Grease | Grease (musical) | Grease (film) | The Grease Band | Grease 2 | Grease (soundtrack album) | the Grease Band | Parotid duct | ''Grease'': The Rockin' Rydell Edition | Grease: The Original Soundtrack from the Motion Picture | Grease (lubricant) | grease | Elbow grease | East Bay Grease | Duct tape occlusion therapy | Congenital lacrimal duct obstruction | Bottle en ''col de cygne'' (Swan neck duct) used by Louis Pasteur | bile duct |