Product introduction
PVC pipe fitting molds are key tools for producing plastic pipe fittings (such as elbows, tees, reducers, valves, etc.). The mold design is based on the flow characteristics and shrinkage rate of PVC material, using advanced runner systems to ensure uniform melt filling of the cavity, reducing internal stress and warpage. The mold steel is selected from high-quality materials such as P20, H13, or 420 stainless steel, undergoing forging, rough machining, heat treatment (quenching + tempering), finishing, and surface treatment (nitriding or chrome plating), achieving a hardness of HRC 48-52, with good wear and corrosion resistance.
Key structures include:
- Core and cavity: Machined according to the product 3D model, with tolerance controlled within ±0.02mm.
- Sliders and lifters: Used to form side holes or threads, with smooth and reliable action.
- Cooling system: Multi-layer water channel design, with controllable cooling water flow and temperature to shorten molding cycle.
- Ejection system: Using ejector plate or ejector pins to avoid pipe fitting deformation.
- Venting system: Venting grooves are set at the parting line and slider positions to prevent gas trapping.
The mold can be equipped with hot runner system (for environmentally friendly or foamed PVC) or cold runner system. Delivery time is about 30-60 days depending on complexity. We provide mold trial reports and FMEA documentation, but will not fabricate certifications. The mold life under normal use can reach around 1 million cycles.
The required injection molding machine tonnage should be calculated based on product dimensions; we assist customers in machine matching. The mold packaging is rust-proof treatment plus wooden case, suitable for sea shipment. After-sales service includes remote guidance and spare parts replacement.