Digger- Slip on Welded Spiralizer provide low coefficient of friction to reduce drag forces while running in pipe thus optimizing mud displacement and minimizing pressure drop across the Centralizer. In this the bow springs hardly welded to the end collars on suitable temperature with proper correct grade electrode. While giving maximum standoff these blades create vortex flow to optimize mud displacement. They are available with straight vane or spiral vane type options which resist high side loads. They are capable of providing maximum stand-off.