Mechanical connection processes of steel bars: upsetting straight thread coupler connection and rolling straight thread connection.

Steel bar upsetting straight thread coupler connection

The upsetting straight thread coupler connection is to upset the end of the steel bar and cut it into a straight thread, then use a sleeve with a straight thread to tighten the steel bar at both ends.

Steel bar rolling straight thread coupler connection

Steel bar rolling straight thread coupler connection is utilizes the characteristics of plastic deformation of metal materials, cooling and hardening to enhance the strength of metal materials, so that the joint and the base metal are equally strong. According to the rolling straight thread forming method, it can be divided into three types: direct rolling thread, extruded rib rolling thread, and stripped rib rolling thread.