About Us

Changzhou Zhongjia Plastic Industry Co., Ltd.

Changzhou Zhongjia Plastic Industry Co., Ltd. was established in 2006. It is an enterprise specializing in the research, development, production and sales of UPVC, CPVC plastic pipe fittings and valve products. As China PVC-U S5 Pipes Plain End Manufacturers and Custom PVC-U S5 Pipes Plain End Suppliers. Our featured products are plastic products such as UPVC/CPVC pipes, pipe fittings and valves. At present, we mainly supply industrial and water supply series pipes, pipe fittings and valves that meet national standards, American standards. Our products are sold to Southeast Asia, the Middle East, Africa, North America, South America, and are widely used in industry, agriculture, construction and other fields.
Our company is located in the Xueshuxiang Industrial Concentration Zone, Yaoguan Town, Wujin District, Changzhou City, Jiangsu Province. The area is close to the Shanghai-Chengdu Expressway for 10 kilometers, the Yangtze River Expressway for 15 kilometers, the Changzhou High-speed Railway Station for 15 kilometers, and Shanghai for 160 kilometers. It has convenient transportation and environment.
The company covers an area of 50,000 square meters and has an annual production capacity of more than 30,000 tons. The company has passed ISO9001, ISO14001, and OHSAS18001 system certification. It has 4 raw material mixers, 60 plastic injection molding machines, 8 pipe extrusion production lines, 10 mechanical processing equipment, and more than 3,000 sets of molds. At present, we have 150 employees, including 10 technicians. With the continuous development and increasing internationalization of the company, we are committed to attracting talents and preparing for vigorous development.
The company adheres to the market-oriented, quality-oriented, service-oriented, introduces advanced production equipment and technology, makes products, creates brands, and has won the trust and recognition of customers. It has now become one of the green and vital pipeline production enterprises at home and abroad. We will always focus on customer satisfaction, follow the business principles of "modernization, youth, and knowledge", strive to catch up with the advanced level of the same industry at home and abroad, and strive to create a Chinese brand.
We sincerely welcome domestic and foreign customers to our company to discuss cooperation!

Certificate Of Honor

News

UPVC 45° Elbow Fittings Provide Efficient Directional Flow Control

Jul 08,2026

What Is A UPVC 45° Elbow And How It Functions A UPVC 45° elbow is a pipe fitting made from unplasticized polyvinyl chloride that changes the direction of a piping run by a 45-degree angle. Unlike the more commonly used 9...

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What Are UPVC S10 Pipes and Where Are They Used?

Jul 02,2026

What Are UPVC S10 Pipes UPVC S10 pipes are unplasticized polyvinyl chloride pipes manufactured according to a specific pipe series classification, commonly used in water supply and irrigation systems. The "S" designation...

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What Is a PVC-U Reducing Tee and How Do You Choose the Right One?

Jun 23,2026

What Is a PVC-U Reducing Tee and How Do You Choose the Right One? In any piping system that branches into multiple flow paths or changes pipe diameter at a junction point, the choice of fitting is critical to system perf...

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PVC-U S5 Pipes Industry knowledge

PVC-U S5 Pipes Plain End – High-Quality Plumbing Solution

PVC-U (unplasticized polyvinyl chloride) pipes are widely used in modern plumbing, irrigation, and industrial applications due to their durability, corrosion resistance, and cost-effectiveness. Among the various types available, PVC-U S5 Pipes with Plain Ends from Zhongjia stand out for their high-pressure resistance, compliance with DIN standards, and reliable performance in both residential and commercial systems.

Features & Benefits
1. High Pressure Resistance (PN20)
The PVC-U S5 Pipes are designed to withstand a nominal pressure of PN20 (20 bar), making them ideal for high-pressure water supply, industrial pipelines, and compressed air systems. Their robust construction ensures long-term reliability without deformation or leaks.

2. Corrosion & Chemical Resistance
Unlike metal pipes, PVC-U pipes do not rust or corrode, even when exposed to aggressive chemicals, acidic or alkaline environments. This makes them perfect for:
Water supply systems
Chemical transportation (compatible with many non-reactive fluids)
Drainage and sewage systems

3. Smooth Interior Surface
The smooth inner wall of Zhongjia’s PVC-U pipes minimizes friction, ensuring optimal flow efficiency and preventing scaling or sediment buildup. This feature reduces energy consumption in pumping systems and maintains consistent water pressure.

4. Lightweight & Easy Installation
PVC-U pipes are significantly lighter than metal or concrete pipes, making them easier to transport, handle, and install. The plain end design allows for:
Solvent welding (for a permanent, leak-proof joint)
Flange connections (for systems requiring disassembly)

5. Long Service Life & Low Maintenance
Thanks to their resistance to UV rays (when properly coated), abrasion, and biological growth, these pipes have a service life of 50+ years with minimal maintenance.

6. Compliance with DIN Standards
Manufactured according to DIN standards, these pipes meet stringent European quality and safety requirements, ensuring reliability in demanding applications.

Applications of PVC-U S5 Pipes
Due to their durability and versatility, Zhongjia’s PVC-U S5 Pipes are used in:

1. Potable Water Supply
Residential and commercial plumbing
Municipal water distribution networks

2. Industrial Pipelines
Chemical processing plants
Compressed air systems
Cooling water circulation

3. Irrigation & Agricultural Use
Drip and sprinkler irrigation systems
Greenhouse water supply

4. Drainage & Sewage Systems
Wastewater management
Stormwater drainage

Why Choose Zhongjia’s PVC-U S5 Pipes?
Reliable Brand: Zhongjia is a trusted manufacturer of high-quality PVC piping solutions.

Cost-Effective: Lower installation and maintenance costs compared to metal pipes.

Environmentally Friendly: PVC-U is recyclable and has a lower carbon footprint than metal alternatives.

Wide Size Range: Available in DN15 to DN25, suitable for various applications.

For a durable, high-pressure-resistant, and low-maintenance piping solution, Zhongjia’s PVC-U S5 Pipes (Plain End) are an excellent choice. Their compliance with DIN standards, chemical resistance, and long service life make them ideal for plumbing, industrial, and agricultural applications.