WELDABLE coupler is designed for connecting reinforcing bar to structural steel members such as plates, piles, beams, columns, etc. Coupler is normally arc welded to the structural steel in a fabricating yard. The load conditions at the connection must be considered and determined by the designer along with the design of the weld, the selection of electrode, and other relevant choices to be used, which must be matched to the properties of the plate and tube, and to the site conditions. Normally coupler is arc welded to the structural steel in a fabricating yard.