China OEM Top Quality HDPE Pipe Electro CHINAMFG Fittings Catalog Reducer/Stub Flange/Tee/Elbow/Coupling/End Cap

Product Description



Product Description

Electric CHINAMFG HDPE Fittings by ZheJiang Kangyu Pipe Industry Co., Ltd. are a unique type of socket CHINAMFG machine designed for connecting HDPE pipes. These fittings contain brass wire inside, requiring the use of an Electric CHINAMFG machine for installation. With a pipe outside diameter equal to the fittings’ inside diameter, the pipe can easily fit inside the fittings, enabling a seamless socket CHINAMFG process. Available in sizes ranging from OD 20-315mm, these fittings offer a more straightforward operation compared to traditional butt CHINAMFG methods, which can be cumbersome due to heavy machinery. The HDPE electrofusion fittings are connected using electric CHINAMFG welding machines, ensuring a secure and efficient connection. The electrofusion coupler is specifically designed to connect 2 HDPE pipes effortlessly.


Hot Melt Pipe Fittings by ZheJiang Kangyu Pipe Industry Co., Ltd.

Our HDPE pipe coupling is designed for easy connection using a socket welding machine, ensuring simple operation. The socket CHINAMFG fittings are available in sizes ranging from OD20 to OD110mm. For instance, if you have an HDPE pipe with a diameter of OD 25mm, you can use 25mm socket CHINAMFG fittings along with a socket CHINAMFG machine for seamless connection. Additionally, our thread fittings come in female and male variations, including sockets, elbows, and tees. We also offer socket valves for convenient control.

Fusion machine





Characters of pipe



Unique Design:
Choose the maximum high pressure design, guarantee system security.
Accurate marking line of insertion depth and angle, saving time and construction cost.


Superior Materials:
We choose imported specialized resin suitable for pipe to produce PE fittings.


Lean Production:
With sophisticated injection mold, automatic production, the dimension of pipe fitting is precise.


Guarantee the stability of product size.


Long Life:
More than 50 years under normal conditions.

Our Advantages

Product Description

ZheJiang Kangyu Pipe Industry Co., Ltd. presents a high-quality product with the following features:

  • No shrinkage, deformation, porosity, or other defects
  • No overflow burr, with heating wires arranged in order
  • Indicator hole cover cap installed before water cooling
  • PE conversion seal and batch number seal pointers can be rotated

Experience superior quality and precision with our product, ensuring optimal performance and durability.

Company Profile

Our History

ZheJiang Kangyu Pipe Industry Co., Ltd. is a leading manufacturer and supplier of high-quality HDPE pipes, PPR pipes, PVC pipes, and pipe fittings. Established in 2009, our company has a strong presence near the HangZhou Port, a key transportation hub in China, ensuring efficient product delivery.

Main Products

HDPE Pipes and Pipe Fittings:

Our HDPE pipes offer high flexibility, impact resistance, and corrosion resistance, ideal for water supply and gas transmission. Our range of pipe fittings includes butt CHINAMFG fittings, electrofusion fittings, saddle clamps, and mechanical fittings for various applications.

PPR Pipes and Pipe Fittings:

Our PPR pipes are designed for hot and cold water transportation, featuring excellent heat resistance and pressure resistance. The socket CHINAMFG fittings, brass fittings, and welding instruments ensure easy installation in residential, commercial, and institutional settings.

PVC Pipes and Pipe Fittings:

We manufacture PVC pipes for drainage and electric conduits, known for superior corrosion resistance and electrical insulation. Our PVC pipe fittings offer excellent chemical resistance and impact resistance for reliable performance.

Positive Outlook

ZheJiang Kangyu Pipe Industry Co., Ltd. prioritizes quality and customer satisfaction. With a robust management system, advanced technology, and a dedicated R&D team, we continuously enhance product quality and innovation. We are committed to developing high-tech pipe products, exploring new markets, and fostering partnerships for mutual success.

Our factory

ZheJiang Kangyu Pipe Industry Co., Ltd.

Experience the epitome of modern factory production with our state-of-the-art mechanical equipment. Our annual output of 30,000 tons, equivalent to 3,000 containers, guarantees efficiency and reliability.

Our top-notch machinery and streamlined management system not only reduce costs but also ensure prompt delivery and impeccable product quality.




ZheJiang Kangyu Pipe Industry Co., Ltd. offers CE, SGS, ISO, CNAS, IAF-certified HDPE/PE Socket Electrofusion Couplers. Compliant with international standards for water supply systems.



packaging & shipping



Welcome to ZheJiang Kangyu Pipe Industry Co., Ltd.


Q1: Can I request a sample before placing an order?

A: Yes, samples are available. For normal products, samples are free, and you only need to cover the freight. For high-value products, you may need to cover the freight and a certain product cost. As we build a long-term relationship or you become a VIP customer, free samples will be provided when needed.

Q2: What payment options are available?

A: We accept T/T, L/C, or Ali trade insurance. Choose the most convenient option for you.

Q3: How and when will I receive my goods after payment?

A: For small quantity products, they will be delivered by international courier (DHL, FedEx, ***, etc.) or by air, usually within 3-5 days. For large quantity products, shipping by sea is recommended, taking days to weeks depending on the destination port.

Q4: Can I use my own label or package?

A: Yes, we can use your appointed label or package as needed.

Q5: How do you ensure the quality of the goods?

A: We believe in honesty and responsibility as the foundation of our company. All products provided are qualified, and we conduct testing and provide a Certificate of Analysis (COA) before delivery.

Q6: Is the price listed correct?

A: The listed price is for reference only. For the latest price, please contact us directly.

Q7: How can I get samples?

A: We are pleased to offer free samples; you only need to pay the freight cost.

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reducer coupling

How to Properly Install and Secure a Reducer Coupling to Prevent Leaks

Proper installation and secure fastening of a reducer coupling are crucial to prevent leaks and ensure the integrity of the plumbing or piping system. Here are the steps to follow when installing a reducer coupling:

  1. Prepare the Pipes: Before installing the reducer coupling, ensure that the ends of both pipes are clean, smooth, and free from any debris or burrs. Use a pipe cutter or a hacksaw to achieve clean cuts.
  2. Apply Primer (For Plastic Pipes): If you are working with plastic pipes like PVC or CPVC, use a pipe primer to clean and prepare the pipe ends. The primer helps in removing dirt and contaminants while promoting proper adhesion of the solvent cement.
  3. Apply Solvent Cement (For Plastic Pipes): After priming (if required), apply a layer of solvent cement to the outside of one pipe end and the inside of the reducer coupling socket. Make sure to use the appropriate cement compatible with the pipe material.
  4. Align the Pipes: Insert one pipe end into the socket of the reducer coupling, ensuring that it is fully seated. Make sure the pipes are aligned properly, and there is no gap between the pipe end and the coupling socket.
  5. Mark the Joint: Use a marker to mark the joint between the pipe and the coupling. This will serve as a reference point for proper insertion during the final assembly.
  6. Secure the Coupling: If the reducer coupling has a slip-on design, push the coupling towards the marked joint until it is fully seated. For threaded reducer couplings, thread the coupling onto one of the pipes, ensuring a tight fit.
  7. Tighten the Fasteners: If the reducer coupling has fasteners, such as nuts and bolts, tighten them securely to create a leak-resistant seal between the coupling and the pipes. Use the appropriate tools to achieve the recommended torque.
  8. Inspect for Leaks: After installation, inspect the joint and the surrounding area for any signs of leaks. Turn on the water supply or the fluid being conveyed and check for any drips or seepage.
  9. Allow Cure Time (For Plastic Pipes): If you used solvent cement for plastic pipes, allow sufficient time for the cement to cure before subjecting the joint to pressure or stress. Follow the manufacturer’s instructions for cure time.

It is essential to follow the manufacturer’s guidelines and best practices for the specific type of reducer coupling and pipe material being used. Proper installation and secure fastening will help ensure a leak-free connection and maintain the overall integrity of the plumbing or piping system.

reducer coupling

Real-World Examples of Reducer Coupling Usage in Different Industries

Reducer couplings are widely used in various industries where pipes of different diameters need to be connected efficiently and securely. Some real-world examples of their usage include:

  • Plumbing and Construction: In plumbing systems, reducer couplings are used to transition between different pipe sizes when connecting water supply lines, drainage systems, and irrigation pipes. They are also used in construction for joining pipes in different parts of a building where varying diameters are required.
  • Oil and Gas Industry: The oil and gas industry often uses reducer couplings in pipelines to connect sections of pipes with different diameters during oil extraction, refining, and transportation processes.
  • Chemical Processing: Chemical plants and processing facilities use reducer couplings to join pipes in various sections of their processes, accommodating the need for different pipe sizes in mixing, conveying, and storage applications.
  • Water Treatment: Water treatment plants and facilities use reducer couplings to connect pipes in water distribution systems and wastewater treatment processes.
  • Food and Beverage Production: In the food and beverage industry, reducer couplings are used to connect pipes of different diameters in production lines, ensuring the efficient flow of ingredients and products.
  • Pharmaceutical Industry: Pharmaceutical manufacturers utilize reducer couplings to connect pipes in their processing and packaging systems, where hygiene and product integrity are critical.
  • Mining and Material Handling: In mining operations and material handling facilities, reducer couplings are used to connect pipes for the transportation of minerals, ores, and bulk materials.
  • Power Generation: Power plants, including thermal, nuclear, and renewable energy facilities, utilize reducer couplings in their piping systems to manage the flow of water, steam, and gases at various points.
  • Automotive and Transportation: In automotive manufacturing and transportation infrastructure, reducer couplings are used to connect pipes in cooling systems, exhaust systems, and fluid transportation applications.
  • Agriculture: Agricultural operations use reducer couplings in irrigation systems and fluid transport applications where pipes of different sizes are used to deliver water and fertilizers to crops.

These examples demonstrate the versatility and widespread use of reducer couplings across different industries, playing a crucial role in ensuring the proper functioning of fluid and gas transportation systems.

reducer coupling

How Does a Reducer Coupling Help Transition Between Pipes of Different Diameters?

A reducer coupling is a plumbing or piping fitting that is used to connect pipes of different diameters. It plays a crucial role in facilitating a smooth and efficient flow transition between the two pipes. Here’s how a reducer coupling helps in transitioning between pipes of different diameters:

  • Size Adjustment: The primary function of a reducer coupling is to adjust the pipe size to accommodate the change in diameter between two pipes. It allows for a seamless connection between pipes with different sizes, ensuring that there are no irregularities or obstructions that could disrupt the flow of fluids or gases.
  • Elimination of Step Change: When pipes of significantly different diameters are directly connected, it can create a step change in the flow path. This sudden transition can lead to turbulence and pressure loss. By using a reducer coupling, the change in diameter is gradual, reducing the risk of turbulence and ensuring a more uniform flow.
  • Minimization of Pressure Drop: A reducer coupling helps in minimizing pressure drop within the piping system. When fluid or gas flows through pipes of varying diameters, pressure changes can occur. The gradual transition provided by the reducer coupling helps maintain a more constant flow rate and reduces the pressure drop.
  • Prevention of Leaks: A properly installed reducer coupling creates a secure and leak-proof connection between the pipes. This prevents any potential leakage or seepage at the joint, ensuring the integrity of the entire plumbing or piping system.
  • Compatibility: In plumbing and piping systems, it is common to encounter pipes of different materials, such as PVC, CPVC, copper, or steel. Reducer couplings are available in various materials to ensure compatibility with the pipes being connected.
  • Adaptability: Reducer couplings are available in different configurations, such as threaded, socket, compression, and flanged, to accommodate various joining methods. This adaptability makes them suitable for a wide range of applications and industries.

Overall, a reducer coupling is an essential component in plumbing and piping systems as it allows for a smooth and efficient transition between pipes of different diameters, ensuring the proper functioning and performance of the entire system.

China OEM Top Quality HDPE Pipe Electro CHINAMFG Fittings Catalog Reducer/Stub Flange/Tee/Elbow/Coupling/End Cap  China OEM Top Quality HDPE Pipe Electro CHINAMFG Fittings Catalog Reducer/Stub Flange/Tee/Elbow/Coupling/End Cap
editor by CX 2024-05-09






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