The 32-cavity pin-valve hot runner system customized for PP medical syringe spiral joints complies with ISO 13485 / GMP medical-grade production standards and meets the high-speed, precision, and sterile injection-molding requirements of medical-grade PP materials. **Core Advantages** - **Multi-cavity balance with stable precision**: The 32-cavity independent pin-valve timing control ensures that the filling deviation of each cavity is ≤ 0.5%, and the product weight is uniform. The precise temperature control (±1℃) is suitable for the low-shear and anti-degradation molding of PP materials. - **Medical-grade cleanliness with seamless gates**: The pneumatic pin-valve is free from oil pollution, and the stainless-steel runner is mirror-polished. The gate closes smoothly, with no stringing / burrs / residual marks, meeting the medical sterile and appearance requirements. - **High-efficiency material-saving and cost optimization**: There is no runner condensate, and the material utilization rate is ≥ 99.5%. The molding cycle is shortened by more than 30%, and the 32-cavity synchronous mass production is suitable for the automated production of large-quantity syringe joints. - **PP-material compatibility, durability, and reliability**: The special hot-nozzle and runner balance design is suitable for PP materials with low-shear. The valve pins / nozzles are made of medical-grade wear-resistant alloy, ensuring stable long-term production and easy maintenance.