Welded connections and details This section introduces welded connection components available in Tekla Structures. Click the links below to find out more: Cross (4) Fitting (13) Round tube (23) Welded column (31) Weld preparation (44) Welded beam to beam (123) Welded column with stiffeners (128) Beam prep (183) Doubler plate (1022) Pipe doubler plate Ring plate