Bonney Forge has collaborated with the Pipe Fabrication Institute (PFI) to produce their 2008 Approved Release PFI Standard ES-49, "Guideline for Installation of Integrally Reinforced Branch Outlet Fittings," which covers in detail the basic welding procedure and recommended weld deposit criteria for OLET fittings. (Copies available upon request.) Additionally, a revision has been proposed to B31.1 "Power Piping Code" clarifying the governing criteria used for weld size determination and provides depictions of some acceptable weld profile for "Integrally Reinforced Branch Outlet Connections."