Specifically engineered for 13.5g PET preform injection molding, this cavity flange is compatible with mainstream preform system interface standards. Utilizing high-strength steel material and multi-axis precision machining technology, it ensures preform weight accuracy (≤0.3% deviation) and neck dimensional tolerance (±0.02mm). Featuring a modular design, it seamlessly integrates with various hot runner systems of injection molding equipment, meeting the core demands of beverage and household chemical industries for high-efficiency mass production and molding consistency. Compatible with both hot-fill and ambient-fill processes.