The HDCJ-40S steel bar upsetting machine is an advanced cold-upsetting device designed with a dual-cylinder synchronous hydraulic system. It is specifically used for the cold upsetting processing of the ends of ordinary threaded steel bars or high-strength precision-rolled threaded steel bars with diameters ranging from Φ14mm to Φ40mm. Its core feature lies in the use of two symmetrically arranged main cylinders that apply synchronous pressure, ensuring uniform plastic deformation of the steel bar ends within the mold to form standard and robust upset heads. This equipment is widely applied in the reinforcement and connection preparation of steel bar ends for prefabricated building components, pipe piles, bridge anchorages, subway segments, and other related fields.

Compared to single-cylinder upsetting machines, the dual-cylinder design provides superior alignment accuracy, making it particularly suitable for long steel bars or applications requiring high coaxiality. It also offers high efficiency, rendering it well-suited for batch production.

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