Tube to Tube Union Tube to Tube Union Socket Weld Cross Part Number: TSUC Brand: TruFit Socket Weld Cross Socket Weld Elbow Part Number: TSUE Brand: TruFit Socket Weld Elbow Socket Weld Tee Part Number: TSUT Brand: TruFit Socket Weld Tee Socket Weld Union Part Number: TSU Brand: TruFit Socket Weld Union 1