... trapezoidal section, rectangular section, combined section, etc. transformer core winding machine for CRGO cores round section, trapezoidal section ... , etc. Main technical data:1 Suitable core shape: plane & tridimensional2 Suitable core sections: round, trapezoidal, round+trapezoidal, ... rectangle3 Max. core column diameter: plane 230mm; tridimensional 300mm4 Max ...