Explore our latest high-performance PVC valves, water taps, and specialized fittings manufactured using precision molding processes.
In precision engineering, a 3-plate injection mold represents a cornerstone of high-efficiency production. Unlike conventional 2-plate systems, the 3-plate mold design introduces a floating stripper plate that automatically degates the injection-molded parts during the opening sequence. This self-degating process eliminates secondary manual runner removal, optimizing overall cycle time and ensuring consistent aesthetic and functional surfaces.
Allows the use of pin gates on multi-cavity layouts, where the runner system is sheared automatically, leading to cleaner gate scars and minimal post-processing costs.
Facilitates injection from center locations on round or complex-shaped components, such as valve bodies, reducing weld lines and warpage.
Provides an economical alternative to complex hot runner systems while keeping multi-cavity balance and high production cycle times.
Global injection molding procurement professionals are prioritizing Chinese toolmakers for 3-plate molds due to the rapid execution and deep tooling supply chains located in coastal regions. Ehao Plastic Group, utilizing academic inputs and cutting-edge computerized CNC tools, bridges the gap between cost-efficiency and premium engineering tolerances.
Ehao Plastic Group is a high-tech private enterprise integrating R&D and production of building materials, pipe fittings, and injection moulds. Especially, Ehao Plastic Group is a leader of PVC/UPVC ball valves in the domestic market in China.
Since its inception, the company has been supported by the Chinese Academy of Sciences and Zhejiang University in Technology. We have introduced precision production lines and advanced computer automatic injection molding machines from Germany to guarantee structural integrity.
All molded components and tooling outputs undergo a rigid schedule of 26 steps of scientific testing and strict quality controls to ensure a 100% ex-factory pass rate. The technical indexes of our products fully accord with DIN8077 and DIN8078 standards, achieving world-class precision metrics.
Rigorous QA cycle from raw resin evaluation to pressure testing under heat.
Serving customers in Europe, North America, and Southeast Asia.
Zero-defect manufacturing target achieved through automated injection cycles.
Fully certified to DIN8077 and DIN8078 European standards.
Choosing the right mold base design for custom polymer parts. Compare key metrics of productivity, tooling investment, and gate aesthetics.
| Feature | 2-Plate Mold | 3-Plate Mold | Hot Runner Mold |
|---|---|---|---|
| Gating System | Edge, Submarine, or Direct gate | Pinpoint gate (automatic) | Valve gate or Hot tip |
| Runner Separation | Manual or robotic shearing | Automatic separation during opening | No solidified runner waste |
| Tooling Cost Factor | Baseline (1.0x) | Moderate (1.3x - 1.5x) | High (2.0x - 3.0x) |
| Maintenance Overhead | Low | Moderate (requires puller pins & latch locks) | High (requires electric controllers) |
| Cycle Times | Dependent on cooling/extraction | Highly optimized via automatic ejection | Fastest (no runner cooling delay) |
Our heavy-duty molded components are widely distributed across diverse industrial ecosystems, from domestic infrastructure to commercial agricultural setups.
From selecting and configuring the right machine for your job to helping you finance the purchase that generates noticeable profits.
Product Detail QuickPacka...
High pressure endurance and UV stabilized material structure.
Perfect for household and external landscaping setups.
Double union functionality allows easy assembly maintenance.
Sourced directly from our high-tech China assembly floor.
Industrial-grade thread ends compliant with DIN norms.
High durability with smooth open/close control torque.
Robust ABS handle design ensures high cycle performance.
Slip fitting mechanism optimized for precise glue bonding.
Elegant aesthetics paired with exceptional leakage control.
Precision thread cut to match NPT or BSPT configurations.
Stainless steel level handles prevent corrosion in chemical setups.
Combines easy maintenance with high hydraulic pressure capabilities.
Aesthetic white PVC variant, ideal for residential piping layouts.
Excellent structural rigidity, optimized for general building works.
Reliable sealing technology prevents internal flow leakage.
Industrial fluid regulation valve with easy disassembly features.
Heavy duty wall thickness ensuring durable application cycles.
Engineered for clean water transport structures with minimal pressure drop.
Dual color engineering design paired with robust interior seals.
Premium thread consistency matching standard international piping.
International buyers from North America, Europe, and Asia look to China when sourcing 3-plate tooling due to structural advantages in material logistics and deep industrial engineering expertise. When choosing a qualified China supplier for 3-plate molds, keep these critical evaluation criteria in mind:
Professional China factories provide Moldflow® analytics to pinpoint air traps, weld lines, and fill time optimizations before machining steel.
High-quality suppliers use verified mold steels like H13, S136, or NAK80 to handle the mechanical stresses of the parting plates.
Because 3-plate molds rely on dynamic plates moving on guide pins, keeping slide tolerances under ±0.01mm prevents flashing.
Ehao Plastic Group addresses these technical requirements by matching custom specifications with high-quality components. We supply custom development services and mold prototypes directly from customer samples, designs, or drawings.
Answers to key engineering questions about runner design, maintenance cycles, and cost structures.
A 2-plate mold has a single parting line where the molded part and the runner system are ejected together as one piece. A 3-plate mold has two parting lines, dividing the tool into three sections. This configuration automatically separates the runner from the part during mold opening, making it ideal for pinpoint gating on multi-cavity parts.
3-plate molds are preferred when budget constraints prevent investing in a hot runner system, yet automatic gating is required for high production runs. They provide a cost-effective mechanical alternative for center-gated parts without the high upfront expenses and electronic controller needs of hot runners.
For long production runs (500k+ cycles), premium steels like H13, S136 (stainless for corrosion resistance), or NAK80 are recommended. The sliding plate interface requires hardened guide pins and bushings to prevent wear and preserve structural alignment.
We subject all tools and molded components to 26 steps of scientific testing, overseen by strict quality inspectors. By combining advanced German injection molding machinery with engineering expertise from institutions like Zhejiang University, we ensure complete compliance with DIN8077 and DIN8078 standards.
Discover more of our direct-from-factory PVC, UPVC, and PP solutions, manufactured using high-speed automated molds.
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