This machine is the special electric equipment for iron craftwork processing, and it makes use of the plastic metal deformation in warping to convert the material into pretzel shape resulting in esthetical art. The machine is set by timer control with automatic repetition, and can powerfully and efficiently twists metal material into pretzel shape. The equipment can guarantee rapid production and product consistency in batches, completely freeing the producers from burdensome physical labor. The equipment also has multiple strand mounding function. The finished decorative parts can be used as artistic starting pole of stairway and pull handle of iron craftwork door. The machine can twist maximum 25×25mm square steel and 50×8mm flat iron, and can twist four strands of φ12mm steel bars and four strands of 12×12mm square steel bars into multiple strand mounding parts. If we want to twist length 800mm or more pretzel shape, we can purchase detachable machine body in addition: