Pipe Fitting Mould
Pipe fittings are essential components in plumbing, drainage, and industrial piping systems. From residential water supply to municipal infrastructure, fitting quality directly impacts system reliability. Sino Mould brings over 26 years of injection moulding expertise to pipe fitting mould manufacturing, delivering high-precision, high-efficiency tooling for PPR, PVC, and broader applications—all optimized for seamless integration with DKM injection moulding machines.
Standard Pipe Fitting Mould Details
| Mould Cavity Steel | 718H pre-hardened | Recommended Injection Machine | DKM 250T-350T+ |
|---|---|---|---|
| Mould Core Steel | 718H pre-hardened steel | Resin MFI | PPR 0.2-0.4 g/10min, PVC on request |
| Mould Base Standard / Steel | Standard base, P20/718H | Ejection System | Servo unscrewing + balanced ejector |
| Sliders, Inserts, Lifters Steel | Core-pulling (socket fittings on request) | Injection Process | Multi-stage injection + mould temp control |
| Steel Summary | 718H (HRC 32-36) + BeCu inserts (cooling zones) | Cavity Number | 8-24 cavities (depending on part size) |
| Injection Cycle Time | 35-75s (typical) | Hot Runner Type | Cold runner or hot runner (on request) |
| Mould Manufacturing Lead Time | 12-16 weeks | Mould Lifespan | 1,000,000 cycles |
Key Quality Points of Pipe Fitting Moulds
- Dimensional consistency: All cavities (8-24 cavities) maintained to identical geometry; sealing diameter tolerance ±0.05mm ensures leak-free assembly.
- High cooling efficiency: Conformal cooling channels + beryllium copper inserts at thick-walled elbows and sockets drastically reduce cycle time and internal stress.
- Reliable demoulding: Servo-driven unscrewing system with balanced ejector layout ensures damage-free and mark-free release of threads and undercuts.
- Corrosion resistance & durability: 718H pre-hardened steel with surface treatment, suitable for long-term PPR/PVC production; 1 million cycle mould life.
Precision Machining Highlights for Pipe Fitting Moulds
- Multi-cavity high precision: High-speed CNC machining centers ensure all cavities identical; position tolerance ≤0.01mm.
- Conformal cooling machining: 5-axis machining or 3D-printed conformal channels, plus precision EDM for BeCu insert pockets.
- Unscrewing system assembly: Precision gears and servo drive mechanisms ensure smooth and synchronized unscrewing.
- Strict inspection: Hexagon CMM verifies critical dimensions of each cavity; sealing surface profile tolerance ±0.02mm.
Mould Flow Analysis for Pipe Fitting Moulds
Mouldflow simulation for typical PPR fittings:
- Fill balance: Fill time difference across cavities <0.2s;
- Weld line position: Controlled away from sealing surfaces;
- After cooling optimization: Warpage meets ISO standard;
- Clamp force prediction: Well matched with DKM injection machines.
