HIGH TEMPERATURE ALLOY STEEL WELDING FITTINGS Types Elbows, Equal and Reducing Tees, Concentric and Excentric Reducers, Caps Standards/Grades ASTM A 234 Gr. WPL 5, 9, 11, 22 / ANSI B 16.9 Dimensions / Tolerances / Testing (according to Standard) Outside Diameter: 1/4" to 24" Wall Thickness: Schedules 10 to 160 Finishing On request: Special markings, colour coding, etc. Certification 3.1 B according to EN 10 204 Applications High temperature processes, furnace tubes, heat exchangers, etc. (for use with "high temperature" pipe) Applications -