The purpose of this European Standard is to specify the dimensions and tolerances for orbital-welding fittings, intended for stainless steel fluid pipes to EN 3717.
EN 3635:2014 Referenced Document
EN 3717:2008 Aerospace series - Tubes - Selection for engines fluid systems
EN 3635:2014 history
2014EN 3635:2014 Aerospace series - Weld lip - Geometrical configuration
2008EN 3635:2008 Aerospace series - Weld lip - Geometrical configuration