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Plastic Pipe Fitting Mould
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Plastic Pipe Fitting Mould Manufacturer

SWY MOULD has long been a leader in the production of plastic pipe fitting moulds, leveraging years of experience and a wealth of expertise in this specialized field. Our success is driven by a dedicated and cohesive team of designers, engineers, and marketing consultants, who collaboratively manage all our injection mould projects. This synergy is the key to our rapid project turnaround times and consistently high customer satisfaction.

Plastic Pipe Fitting

Plastic pipe fittings are essential components in plumbing and piping systems, used to connect, control, or redirect the flow of fluids. They are commonly made from materials like PVC (Polyvinyl Chloride), PPR (Polypropylene Random Copolymer), PE (Polyethylene), and ABS (Acrylonitrile Butadiene Styrene).

 
Types of plastic pipe fitting:
✔ Elbows (90° & 45°) – used to change the pipe’s direction
✔ Tees (T-joints) – distribute the flow into two directions
✔ Couplings & unions – connect two pipes together
✔ Reducers & bushings – reduce or expand pipe sizes
✔ Caps & plugs – close the end of a pipe
✔ Valves (ball, gate, check valves) – control fluid flow
 
plastic pipe fitting

Key Consideration of Plastic Pipe Fitting

Material Selection
Choosing the right plastic material based on application requirements:
✔ PVC (Polyvinyl Chloride) – ideal for water supply, drainage, and chemical transport.
✔ PPR (Polypropylene Random Copolymer) – common for hot and cold water systems.
✔ PE (Polyethylene) – used in gas pipelines and water supply.
✔ ABS (Acrylonitrile Butadiene Styrene) – suitable for high-impact and low-temperature applications.
Design & Dimensional Accuracy
✔ Ensure precise measurements for proper sealing and leak prevention.
✔ Wall thickness, angles, and tolerances should meet industry standards (e.g., ISO, ASTM).
✔ Smooth internal surfaces reduce fluid resistance and clogging.
Mold Design & Manufacturing
✔ Use high-quality mold steel (e.g., P20, H13, 2316) for durability.
✔ Multi-cavity molds improve production efficiency.
✔ Hot runner or cold runner system selection affects production cost and quality.
✔ Drop tests & durability tests for strength.
✔ Smooth edge finishing to prevent injuries.
✔ No small parts that could be choking hazards.

Pressure & Temperature Resistance
✔ Fittings must withstand the working pressure and temperature of the piping system.
✔ Testing methods include hydrostatic pressure tests and thermal cycling tests.

Chemical & UV Resistance
✔ Some environments require resistant materials to avoid degradation.
✔ Outdoor applications need UV-resistant additives.

Connection Methods
✔ Socket & solvent welding – used for PVC and ABS fittings.
✔ Threaded connections – for removable fittings.
✔ Electrofusion & butt welding – common for PE pipe systems.

Compliance with Standards
Ensure fittings meet international standards such as:
✔ ISO 4427 (PE pipes & fittings)
✔ ASTM D2466 (PVC pressure fittings)
✔ EN 12201 (plastic piping systems for water supply)

Production Efficiency & Cost
✔ Optimize the injection molding process for fast cycle times and minimal waste.
✔ Select high-quality raw materials to reduce defects and rejections.

Advantages of Plastic Pipe Fitting Injection Mould

High Precision & Dimensional Accuracy
✔ Ensures tight tolerances for leak-proof pipe connections.
✔ Smooth internal surfaces reduce fluid resistance and prevent clogging.
✔ Guarantees uniform wall thickness for enhanced strength.

 
High Production Efficiency
✔ Fast cycle times allow mass production at lower costs.
✔ Multi-cavity moulds produce multiple fittings per cycle.
✔ Automated moulding process minimizes labor and enhances efficiency.
 
Strong & Durable Products
✔ Plastic pipe fittings from injection moulding are impact-resistant and long-lasting.
✔ Suitable for high-pressure and temperature-resistant applications.
✔ No weak spots since parts are made in one piece, unlike welded fittings.
 
Material Versatility
✔ Can mould different plastics like PVC, PPR, PE, ABS, and PP based on application needs.
✔ Additives like UV stabilizers, flame retardants, and impact modifiers enhance performance.
✔ Chemical resistance ensures suitability for water, gas, and industrial fluid systems.
 
Cost-Effective Manufacturing
✔ Minimal material waste due to efficient mould design.
✔ Reusable moulds reduce long-term production costs.
✔ Optimized cooling and ejection systems lower cycle times and increase output.
 
Customization & Complex Designs
✔ Enables intricate designs such as threaded, grooved, and multi-way fittings.
✔ Supports branding with engraved logos, part numbers, or special surface textures.
✔ Allows for color customization using masterbatch additives.
 
Minimal Post-Processing Required
✔ Parts come out ready for use with no additional machining needed.
✔ No welding or joining required, reducing assembly time.
✔ Excellent surface finish directly from the mould.
 
Compatibility with Various Connection Methods
✔ Designed for solvent welding, threaded connections, and electrofusion.
✔ Ensures leak-proof, secure joints for piping systems.
 
Compliance with Industry Standards
✔ Moulded fittings meet ISO, ASTM, and EN standards for quality assurance.
✔ Suitable for plumbing, water supply, drainage, gas transport, and industrial piping.
 
Long Mould Lifespan & Low Maintenance
✔ Made from high-quality mould steel (P20, H13, 2316, S136) for durability.
✔ Optimized cooling systems prevent warping and ensure consistent quality.
✔ Can handle 500,000+ production cycles with proper maintenance.

Understanding Your Needs First

Before providing a mould quotation, it is essential to confirm several key details to ensure accurate pricing, feasibility, and customer satisfaction.

Product Information
✔ 3D drawing & 2D drawing (if available)
Format: STEP, IGES, X_T, DWG, or STL
Confirm dimensions, thickness, and detailed features.
✔ Product size & weight
Check if dimensions are within moulding capacity.
Verify part weight for injection machine compatibility.
✔ Material selection
Plastic type: PP, PE, ABS, PC, PS, etc.
Any special requirements: food-grade, UV-resistant, flame-retardant, etc.
✔ Product structure details
Undercuts, threads, ribs, or inserts?
Stackability & nesting requirements (for storage boxes & baskets).
✔ Surface finish & texture
Polishing, matte, high-gloss, or special textures?
Need for engraving or logo marking
 
Mould Specifications
✔ Mould steel type
Options: P20, 718H, H13, S136, NAK80, etc.
Steel selection affects mould lifespan and cost.
✔ Mould life expectancy
Short-run: 100,000–300,000 shots (P20, 718H).
High-volume: 500,000–1,000,000+ shots (H13, S136).
✔ Number of cavities
Single cavity (low production, high precision).
Multi-cavity (mass production, lower cost per part).
✔ Hot runner or cold runner
Hot runner: less waste, better for high production.
Cold runner: more material waste but lower initial cost.
✔ Gate type & location
Common types: pin-point gate, edge gate, submarine gate.
Position affects part appearance and strength.
✔ Ejection system
Ejector pins, stripper plate, air ejection, or hydraulic ejection?
✔ Cooling system design
Optimized cooling channels reduce cycle time.
✔ Mould size & weight
Must match the customer’s injection machine specifications.
 
Injection Moulding Machine Compatibility
✔ Customer’s injection machine tonnage
Confirm the clamping force requirement.
Ensure mould fits within max platen size.
✔ Injection pressure & shot volume
Must match part weight and material shrinkage rate.
✔ Special requirements
If a robotic arm is needed for automatic production.
If the machine supports hot runner control systems.
 
Production & Delivery Requirements
✔ Mould lead time
Standard lead time: 30–60 days depending on complexity.
✔ Trial & sample testing
Confirm if the customer wants T1 samples before shipment.
Any modifications needed after trial?
✔ Packing & shipping
Wooden case packing with anti-rust treatment?
Shipping terms: FOB, CIF, DDU, or EXW?
 
Customer Budget & Payment Terms
✔ Customer’s budget expectation
Helps in choosing steel type and mould complexity.
✔ Payment terms
Standard: 40% deposit, 30% after T1, 30% before shipment.
Flexible options: Negotiable for long-term customers.

Advantages Of Making Injection Mould With SWY MOULD

Expertise in Pipe Fitting Moulds
Years of industry experience.
Fast Project Turnaround
Weekly progress reports with videos & photos.
Complete After-Sales Support
Technical assistance for mould setup & maintenance.

How To Maintain Injection Mould?

Proper injection mould maintenance is crucial to extending its lifespan, ensuring consistent product quality, and preventing defects during mass production.

 
Daily maintenance (during production)
Regular daily checks prevent unexpected downtime and ensure smooth operation.
✔ Inspect & clean the mould surface
Wipe the mould cavity and core with a clean cloth to remove dust, plastic residue, and oil.
Use a mild cleaning agent or mould cleaner for stubborn buildup.
✔ Check the ejection system
Ensure ejector pins and lifters move smoothly and are free from wear.
Apply lubrication to ejector pins to prevent sticking or friction damage.
✔ Monitor cooling channels & vents
Inspect water lines for blockages to ensure efficient cooling.
Check for moisture buildup or rust formation in cooling channels.
✔ Apply anti-rust protection (during idle time)
If the mold won’t be used immediately, spray anti-rust oil or mold preservative to protect against corrosion.
 
Weekly Maintenance
Every week, perform deeper maintenance to check for hidden issues.
✔ Tighten loose bolts & fasteners
Check clamps, guide pins, and bushings to ensure everything is secure.
Re-tighten loose screws or bolts to prevent misalignment.
✔ Inspect venting system
Clean mould vents to avoid burn marks or trapped gases affecting product quality.
Remove any carbon buildup caused by overheating.
✔ Lubricate moving parts
Apply grease to moving components such as sliders, ejector pins, and guide rails to prevent wear and reduce friction.
 
Monthly Maintenance
Once a month, conduct preventive maintenance to detect and fix early-stage damage.
✔ Check for wear & tear
Examine mould parting lines for signs of wear that might cause flashing (excess plastic on product edges).
Look for scratches or dents in the mold cavity that could affect the final product.
✔ Test cooling system efficiency
Flush cooling lines with anti-rust solutions or descaling agents to prevent blockages.
Ensure even cooling to prevent warping or inconsistent part quality.
✔ Polish the mold cavity (if needed)
Use fine sandpaper or a polishing compound to remove minor scratches and residue buildup.
Avoid aggressive polishing, which can change part dimensions.
 
Long-term Maintenace (every 6 months to 1 year)
For high-volume production moulds, schedule a full inspection and restoration every 6-12 months.
✔ Disassemble & deep clean
Take apart ejector pins, slides, and cooling lines for thorough cleaning.
Remove hardened plastic, debris, or rust buildup inside cavities and cooling channels.
✔ Check for cracks or damage
Use a microscope or dye penetrant test to detect small cracks or fatigue marks in the mold steel.
Repair damaged areas before they worsen.
✔ Replace worn-out components
Inspect and replace springs, ejector pins, and guide bushings if they show excessive wear.
Ensure hot runner nozzles (if applicable) are not clogged or leaking.
✔ Apply a protective coating (if storing for long periods)
Coat the mold with anti-rust oil or silicone-based protectant before storing it.
Store in a dry, temperature-controlled environment to prevent moisture damage.

Common FAQ From SWY MOULD Customers

  • Q2: How to go to your factory?

    A2: From Shanghai-3 hours by train; from Guangzhou-2 hours by aeroplane; from Wenzhou-1 hour by train; from Ningbo-1 hour by train; from Hangzhou-2 hours by train; our factory to Luqiao airport is around 1 hour, to Taizhou Xi train station is around 20 minutes, and to Taizhou train station is around 40 minutes.
    You can send the information about the flight or train to us, we can arrange to pick you up. We can book a nice hotel at a reasonable price for you first if you need. Welcome to contact us, and we will offer you the most thoughtful arrangements.

  • Q3: How long is your delivery time?

    A3: Our typical delivery time for injection molds is 35-55 business days. However, we understand the importance of timely delivery and strive to expedite the process whenever possible without compromising quality. Factors such as mold complexity and order volume can influence the final timeline. We'll provide you with a specific delivery estimate once we have a complete understanding of your project requirements.

  • Q4: How about your after-sale service?

    A4: We offer a 3-year warranty on our molds, excluding damages caused by human error or accidents. Beyond the warranty, we are committed to providing ongoing support. Our team aims to respond to customer inquiries within 24 hours. In addition to supplying wear parts, we offer technical assistance and guidance to maximize mold lifespan. We value customer feedback and continuously strive to improve our services.

  • Q5: I have an idea for a new product, but I don't know if it can be manufactured, can you help?

    A5: Absolutely! We can help you bring your product idea to life. Our process begins with a thorough understanding of your concept. We'll work closely with you to refine your idea and create detailed product specifications.
    Next, we can create 3D prototypes or functional prototypes to visualize and test your product. Based on the prototype's performance, we'll conduct a Design for Manufacturing (DFM) analysis to identify potential challenges and optimize the design for efficient production.
    If your product is suitable for injection molding, we can create detailed mold designs and produce high-quality plastic parts. We also offer mold flow analysis to ensure optimal part quality and prevent defects.
    Our goal is to provide a seamless transition from concept to production, minimizing risks and maximizing your product's success.

  • Q6: Can you help us ship the plastic mould?

    A6: Yes, with honour. We offer comprehensive shipping services to ensure your mold arrives safely and on time. We have established partnerships with reliable shipping companies to provide competitive rates for air freight, ocean freight, and courier services.
    To safeguard your investment, we offer shipping insurance as an optional service. Our team can also handle the preparation of necessary shipping documents, including commercial invoices, packing lists, and certificates of origin. For added convenience, we can assist with customs clearance procedures at your end, if required.
    We have a proven track record of successfully exporting molds to customers worldwide, and we're committed to making the shipping process as smooth as possible for you.

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