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ZHSU PPR pipe fittings - PPR coupling is made of Polypropylene Random Copolymer, non-toxic, qualified material, and German production technology guarantee long life over 50 years, were inspected by ZHSU CNAS national laboratory, PN2.5Mpa pressure and 70℃ temperature, suitable for hot and cold water supply and heating systems, fast lead time, competitive price, OEM service, colorful PPR coupling, enough stock for white and gray color PPR couplings.
About Us
Shanghai Zhongsu Pipe Co., Ltd.

Shanghai Zhongsu Pipe Co.,Ltd established in 2004 with 1.01 billion registration capital, situated in Jinshan district of shanghai china, occupied 70000 square meters. China PPR Coupling Suppliers and Custom PPR Coupling. ZHSU specialized in producing PPR pipe, antibacterial PPR pipe, anti UV PPR pipe, PP-RCT pipe, PE-RT pipe, HDPE pipe and fittings with various materials, adopted high technology production line to improve productivity and provide customer with fast delivery time. In order to cooperate with national rural drinking water safety project, ZHSU adopted large diameter facility for PE production, our biggest PE pipe diameter reached DN1200mm at present, ZHSU has become one of the manufacturers in china who can produce such large diameter PE pipe. Custom PPR Coupling for sale.

We adopted German brand Battenfeld-cincinnati production lines for plastic pipes to organize production in strictly accordance with international standards, the procedure from raw material purchasing to finished product delivery is fully under monitoring, passed ISO9001, ISO14001 and OHSAS18001 certification because of perfect management, besides we were nominated as ”Shanghai famous brand products, Shanghai high-tech enterprises and Shanghai famous trademarks”.

Certificate Of Honor
  • ISO14001
  • ISO9001
  • ISO45001
  • CNAS Accredited Laboratory Certificate
  • CE-Certificate
  • Classification Society Factory Accreditation Certificate
  • 2022CEC Certificate - Water Supply Pipe
  • 2022CEC Certificate - Gas Pipe
  • 2021 Measurement Management System Certificate
  • TSG Special Equipment Production Licence New Certificate
  • CNNC Qualified Supplier Certificate
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PPR Coupling Industry knowledge
What is the specific composition of the PPR material used in the Couplings?
The specific composition of PPR (Polypropylene Random Copolymer) used in couplings may vary among manufacturers, but generally, PPR coupling is a thermoplastic polymer composed primarily of polypropylene and a small amount of ethylene as a random copolymer. The ratio of polypropylene to ethylene can influence the material's properties, such as its temperature resistance, impact strength, and flexibility.
The typical composition of PPR material used in couplings includes:
Polypropylene (PP):
Polypropylene is the main component of PPR. It provides the material with its structural integrity, chemical resistance, and durability. The molecular structure of polypropylene contributes to the material's ability to withstand high temperatures and pressures.
Ethylene (Random Copolymer):
A small percentage of ethylene is copolymerized with polypropylene in a random arrangement. This random copolymerization introduces some flexibility and impact resistance to the PPR material. The ethylene content can be adjusted to achieve specific performance characteristics.
Additives and Stabilizers:
May incorporate additives and stabilizers to enhance certain properties of PPR, such as UV resistance, thermal stability, and coloration. These additives can vary based on the intended application and specific product requirements.
PPR is known for its excellent chemical resistance, corrosion resistance, and the ability to maintain its mechanical properties over a wide range of temperatures. The random copolymer structure contributes to PPR's flexibility, making it suitable for use in plumbing and piping systems where durability and ease of installation are crucial.
How does the material composition contribute to the overall performance and durability of the Couplings?
The material composition of PPR couplings plays a significant role in determining the overall performance and durability of these fittings. Here's how the specific composition contributes to their properties:
Polypropylene (PP):
Strength and Rigidity: The polypropylene component provides strength and rigidity to the PPR material. This is crucial for maintaining the structural integrity of the couplings, ensuring they can withstand the pressure and mechanical stresses typical in plumbing and piping systems.
Chemical Resistance: Polypropylene is inherently resistant to a wide range of chemicals, making PPR couplings suitable for various applications, including those involving different types of fluids. This chemical resistance contributes to the durability of the couplings over time.
Temperature Resistance: Polypropylene has excellent temperature resistance. PPR couplings can handle both hot and cold water applications without compromising their structural integrity or performance.
Ethylene (Random Copolymer):
Flexibility and Impact Resistance: The random copolymerization with ethylene introduces flexibility and impact resistance to the PPR material. This flexibility is particularly beneficial during installation, allowing the couplings to adapt to slight movements and thermal expansion in the piping system without cracking or breaking.
Ease of Installation: The presence of ethylene in the random copolymer structure enhances the material's flexibility, making PPR couplings easier to install. This flexibility reduces the risk of stress concentration points and enhances the overall reliability of the fittings.
Additives and Stabilizers:
UV Resistance: Some additives and stabilizers may be included to improve UV resistance. This is especially important if the couplings are exposed to sunlight or outdoor conditions. UV resistance helps prevent degradation of the material over time.
Color Options: Additives may also be used for coloration, allowing manufacturers to produce PPR couplings in different colors. This can help in easily identifying and organizing different piping systems during installation.
The balanced combination of polypropylene and ethylene in the PPR material, along with carefully chosen additives, results in a coupling that offers a combination of strength, flexibility, chemical resistance, and temperature stability. This composition contributes to the overall performance and durability of PPR couplings, making them suitable for a wide range of plumbing and piping applications. 
Shanghai Zhongsu Pipe Co., Ltd.
Shanghai Zhongsu Pipe Co., Ltd.