China Standard HDPE Pipe Fitting Ef 90 Degree Elbow Reducer Socket Coupling From China

Product Description



Product Description


Electric CHINAMFG HDPE Fittings is 1 kind of socket CHINAMFG machine. It has different with normal socket fittings. It has brass wire inside the fittings, it need use Electric CHINAMFG machine. Pipe outside dia is equal to fittings inside dia. So pipe can put inside the fittings. That’s the socket fusion. Normal size is OD 20-315mm. More easy operation compare to butt CHINAMFG . as the butt CHINAMFG machine is too heavy to move.
 It is used to connect HDPE pipes. hdpe electrofusion fittings connect by electric CHINAMFG welding machines, its easy operation. electrofusion coupler is used to connect 2 HDPE.


Hot melt pipe fittings,hdpe pipe coupling is produced by HDPE. it easy connect by HDPE socket welding machine easy operation. Socket CHINAMFG fittings size normally from OD20-OD110mm.HDPE pipe elbow, HDPE connect  by socket CHINAMFG machine. For Example ,HDPE pipe dia is OD 25mm, then we use 25mm socket CHINAMFG fittings, use socket CHINAMFG machine,to connect them together. Thread fittings have female and male fittings, Like socket, elbow and tee. Also have socket valves to control.


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.

welding machine



Our Advantages

1. No shrinkage, deformation, porosity and other defects;
2. No overflow burr, and the heating wires are arranged in order;
3. Install the indicator hole cover cap before water cooling;
4. The pointer of PE conversion seal and batch number seal can be rotated;

Company Profile


Our History

ZheJiang KANGYU Pipe Industry Co., Ltd. is a professional manufacturer and supplier of high-quality HDPE pipes, PPR pipes, PVC pipes, and pipe fittings. The company is located near the HangZhou Port, an important transportation hub of China, which facilitates the delivery of products to the market and enables efficient and convenient logistics.

Founded in 2009, KANGYU has a total of 700 employees and 30 production lines. The company has an annual output value of 100 million US dollars and has attained ISO9001 certification and various quality systems certification. KANGYU’s products have been highly recognized by customers both domestically and internationally.

Main Products

HDPE Pipes and Pipe Fittings:
KANGYU provides HDPE pipes for water supply and gas transmission. The pipes have high flexibility, high impact resistance, corrosion resistance, and long service life. The pipe fitting products include butt CHINAMFG fittings, electrofusion fittings, saddle clamps, and mechanical fittings, which are widely applied in municipal engineering, building water supply, gas pipeline, and coal mine drainage systems.

PPR Pipes and Pipe Fittings:
KANGYU offers a full range of PPR pipes for hot and cold water transportation. The pipes have excellent heat resistance, pressure resistance, and chemical resistance, making them suitable for a wide range of applications, such as residential and commercial buildings, hotels, hospitals, and schools. The PPR pipe fittings include socket CHINAMFG fittings, brass fittings, and welding instruments, which ensure a reliable and easy installation process.

PVC Pipes and Pipe Fittings:
KANGYU manufactures PVC pipes for drainage and electric conduits. The PVC pipes have superior corrosion resistance, electrical insulation, and low thermal conductivity. The pipe fittings are made of high-quality PVC materials, which provide excellent chemical resistance, impact resistance, and dimensional stability.

Positive Outlook

ZheJiang KANGYU Pipe Industry Co., Ltd. adheres to the business philosophy of “quality first, customer first” and strives to provide customers with the best products and services. The company has a sound management system, advanced production technology, and a strong R&D team, which ensures the continuous improvement and innovation of product quality and performance.

In the future, ZheJiang KANGYU Pipe Industry Co., Ltd. will continue to focus on the development of high-tech pipe products, actively explore new markets, and cooperate with partners to achieve mutual benefits and CHINAMFG results. We believe that through joint efforts, the company will have a brighter future and create value for both customers and society.

Our factory

    In order to build a modern factory, we invest in a series of professional mechanical equipment. The annual output amounts to 30000 tons, which can fill up 3000 containers.

The excellent machinery and consummate management system can reduce cost, shorten delivery time and ensure the quality of every product.




We have passed CE, SGS, ISO, CNAS, IAF certification and our products compound international standards



packaging & shipping


Q1: May I get 1 sample before placing order?
A: Yes, Sample are available. For normal products, samples are for free and you just need to bear the freight; For those high value products, you just need to freight and certain product cost. When we both cooperate for some times or when you are our VIP customer, free sample will be offered when you need.

Q2: Which payment is available for your company?
A: T/T, L/C or Ali trade insurance. You can choose the 1 which is convenient for you.

Q3: How and when can I get my goods after payment?
A: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.) or by air. Usually it will cost 3-5days that you can get the goods after delivery. For large quantity products,shipping by see is worthwhile.It will cost days to weeks to come to your destination port, which depends on where the port is.

Q4: Is there any possible to use my appointed label or package?
A: Yes. If needed, we’d like to use label or package according to your requirement.

Q5: How can you guarantee the goods you offer is qualified?
A: We always believe honesty and responsibility are basis of 1 company, so whatever products we provide for you all are qualified. We will have goods tested and provide COA before delivery for sure.

Q6: Is the price on this page correct?
A: The listed price is only for reference, for latest price, pls contact us directly.

Q7: How can I get some samples?
A: We are honored to offer you free samples, just need to pay the freight cost. 

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reducer coupling

Can a Reducer Coupling be Threaded or Welded onto Pipes?

Yes, a reducer coupling can be either threaded or welded onto pipes, depending on the specific design and intended application. The two methods of connection offer different advantages and considerations:

  • Threaded Connection: Some reducer couplings come with threaded ends, allowing them to be easily screwed onto the pipe ends. This type of connection is convenient for systems that may need disassembly or reconfiguration in the future. Threaded couplings can be installed and removed without requiring specialized tools or welding equipment. However, it is essential to use thread sealants or Teflon tape to ensure a tight and leak-free connection.
  • Welded Connection: In some applications, it may be more appropriate to weld the reducer coupling onto the pipes. This method provides a permanent and robust connection that is well-suited for high-pressure or critical systems. Welded joints offer excellent strength and sealing, making them less prone to leaks compared to threaded connections. However, welding requires specialized skills and equipment, and the process can be more time-consuming and irreversible.

The choice between threaded and welded connections depends on various factors, including the system’s pressure and temperature requirements, the pipe material, and the level of permanence desired. Here are some considerations for each method:

  • Threaded Connection Considerations:
  • Quick and easy installation without the need for welding.
  • May be suitable for low to medium pressure systems.
  • Threaded joints may require periodic inspection and re-tightening to maintain their integrity.
  • Potential for leakage if not properly sealed or maintained.
  • Welded Connection Considerations:
  • Provides a permanent and reliable connection.
  • Well-suited for high-pressure and critical systems.
  • Minimal risk of leakage when welded correctly.
  • Requires skilled welders and proper welding equipment.
  • Difficult to disassemble or modify once welded.

When choosing between threaded and welded connections for a reducer coupling, it is crucial to consider the specific requirements of the system, as well as the available resources and expertise for installation. Consulting with qualified engineers or professionals can help determine the most suitable connection method for a given application.

reducer coupling

Are There Industry Standards or Certifications for Reducer Couplings?

Yes, there are industry standards and certifications that apply to reducer couplings to ensure their quality, performance, and safety in plumbing and piping applications. These standards are established by various organizations and regulatory bodies to maintain consistency and reliability across the industry. Here are some of the common standards and certifications relevant to reducer couplings:

  • ASTM Standards: The American Society for Testing and Materials (ASTM) sets standards for various materials, including those used in reducer couplings. ASTM standards ensure the quality and performance of the materials used in the manufacturing of the couplings.
  • ASME Standards: The American Society of Mechanical Engineers (ASME) develops standards for various mechanical components, including couplings. ASME B16.9, for example, covers factory-made wrought steel buttwelding fittings, which include reducer couplings.
  • ANSI Standards: The American National Standards Institute (ANSI) develops and publishes standards that cover various aspects of coupling design, dimensions, and materials.
  • ISO Certifications: The International Organization for Standardization (ISO) provides certifications for manufacturers that adhere to internationally recognized quality management standards.
  • NSF/ANSI Certification: The NSF/ANSI certification is relevant for reducer couplings used in plumbing systems that convey drinking water. This certification ensures that the couplings comply with specific health and safety requirements for potable water applications.
  • UL Listing: The Underwriters Laboratories (UL) provide listing and classification for reducer couplings used in specific applications, such as fire protection systems, to ensure they meet safety standards.

It’s essential to verify that the reducer couplings meet the relevant standards and certifications for the intended application. Using certified and compliant couplings ensures the proper functioning and safety of plumbing and piping systems.

When purchasing reducer couplings, look for manufacturers that provide documentation regarding compliance with industry standards and certifications. This information should be readily available and can help you make informed decisions when selecting the appropriate reducer coupling for your specific plumbing or piping project.

reducer coupling

What are the Materials Commonly Used for Manufacturing Reducer Couplings?

Reducer couplings are manufactured using a variety of materials, each chosen based on its specific properties and suitability for different applications. The most commonly used materials for manufacturing reducer couplings include:

  • PVC (Polyvinyl Chloride): PVC is a widely used material for manufacturing reducer couplings in plumbing systems. It is lightweight, durable, and resistant to corrosion, making it suitable for both indoor and outdoor applications. PVC couplings are commonly used in residential and commercial plumbing installations.
  • CPVC (Chlorinated Polyvinyl Chloride): CPVC shares similar properties with PVC but has enhanced temperature and pressure resistance. This makes CPVC reducer couplings suitable for hot water and higher-pressure applications.
  • ABS (Acrylonitrile Butadiene Styrene): ABS is known for its high impact resistance and durability. ABS reducer couplings are commonly used in drain and waste systems, vent lines, and other low-pressure applications.
  • Brass: Brass reducer couplings are valued for their excellent corrosion resistance and strength. They are often used in plumbing systems where there is a need for a more robust and reliable connection.
  • Copper: Copper is known for its superior conductivity, making it suitable for applications that require electrical grounding. Copper reducer couplings are commonly used in water supply lines and heating systems.
  • Stainless Steel: Stainless steel reducer couplings offer excellent corrosion resistance and are ideal for applications that involve aggressive or harsh environments, such as chemical processing or marine applications.
  • Ductile Iron: Ductile iron is used for manufacturing heavy-duty reducer couplings designed for industrial and large-scale applications. It provides high strength and durability.

When selecting a reducer coupling material, factors such as the fluid or gas being conveyed, temperature and pressure requirements, environmental conditions, and the overall application must be taken into consideration. Additionally, compliance with industry standards and regulations is essential to ensure the reducer coupling’s reliability and safety.

China Standard HDPE Pipe Fitting Ef 90 Degree Elbow Reducer Socket Coupling From China  China Standard HDPE Pipe Fitting Ef 90 Degree Elbow Reducer Socket Coupling From China
editor by CX 2024-04-03


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