SIFFO UPVC (Unplasticized Polyvinyl Chloride) pressure water pipes are pipe systems manufactured primarily from polyvinyl chloride resin through an extrusion molding process, specifically designed for water supply systems. Their core characteristics include:

1. Corrosion Resistance: Chemical Stability Exceeds Traditional Limitations

PVC-U pipes are primarily made of sanitary-grade polyvinyl chloride resin and employ a lead-free stabilization system, enabling them to resist corrosion from acids, alkalis, salts, and organic solvents. In the case of chemical wastewater discharge, an electronics factory used Siffo pipes to transport highly acidic wastewater. After three years of continuous operation, the pipe's inner wall remained smooth, without corrosion or leaks, and its service life was more than twice that of traditional metal pipes.

2. Fluid Efficiency: Optimized Inner Wall Improves Water Delivery Capacity

The pipe's inner wall friction coefficient is as low as 0.009, resulting in a 30% increase in flow rate compared to cast iron pipes. After adopting DN160 pipes in the rainwater drainage system of a large shopping mall, drainage efficiency during heavy rains increased by 40%, effectively preventing damage to the building structure from roof rainwater.

3. Lightweight Design: Optimized Construction Efficiency and Cost

The density of this pipe is only one-fifth that of iron pipes, and the weight of a DN110 pipe section is only one-eighth that of a cast iron pipe of the same size. In a water supply and drainage project for a 30-story residential building, the use of Siffo pipes reduced hoisting time by 60% and overall construction costs by 35%.

4. Excellent Mechanical Properties: High strength and rigidity, suitable for high-pressure water supply systems.

This pipe possesses excellent ring stiffness and impact resistance, with a compressive strength more than 1.5 times that of traditional PVC pipes. In a high-pressure water supply network project in an industrial park, the use of Siffo pipes resulted in stable operation under a continuous pressure of 1.6 MPa without any deformation or rupture. The overall safety and durability of the pipeline system were significantly improved, and maintenance frequency was reduced by approximately 50%.

5. Long Service Life: Designed for a service life exceeding 50 years, with low maintenance costs. 

The pipes utilize an anti-aging formula and UV stabilization technology, maintaining stable performance even under long-term sunlight and temperature fluctuations. In a municipal water supply renovation project in a coastal city, Siffo pipes have been in continuous use for over 20 years. Testing showed that their physical properties degraded by less than 5% compared to brand-new pipes, and the estimated maintenance cost over their entire lifespan is more than 40% lower than traditional material systems.

6. Hygiene and Safety: Meets drinking water hygiene standards, is non-toxic, and does not easily breed bacteria.

The pipe's inner wall is smooth and does not pose a risk of plasticizer migration. It has passed national drinking water hygiene and safety certification, and the total bacterial count is far below the standard limit. In a newly built residential area's direct drinking water system in a certain city, after the full adoption of Siffo pipes, the bacterial count of the terminal water decreased by more than 60%, effectively protecting residents' drinking water health. Simultaneously, there is no biofilm accumulation inside the pipes, maintaining clear and odorless water quality even after long-term use.

7. Flame Retardancy and Safety: Self-extinguishing performance meets standards.

Oxygen index ≥45, meeting the flame retardant standards for building materials. In an underground parking lot ventilation duct renovation project, the pipes self-extinguished within 3 seconds after an open flame test, effectively preventing the spread of fire and ensuring safe evacuation of personnel.

8. Environmentally Friendly Recycling: Sustainable Management Throughout the Entire Lifecycle

Waste pipes can be 100% recycled through crushing and granulation processes. In municipal projects, pipes produced using recycled materials meet the standards of brand-new pipes in terms of ring stiffness and pressure resistance, reducing carbon emissions by 28% per kilometer of pipe.

UPVC Water Supply Pipe Specifications

Material：UPVC (Unplasticized Polyvinyl Chloride)

Connection Methods: Rubber Ring Socket Joint,Solvent cement jointing

Pressure Rating：PN1.0MPa, PN1.6MPa PN2.0Mpa

Size Range：DN20mm ~ DN1000mm (custom sizes available)

Standard: ISO 4422-2; ISO 1452-2,DIN 8062;

Operating Temperature：-20°C ~ +70°C

Color：Grey,Blue, White,Green (custom colors also are available)

Application Fields

Municipal Water Supply and Sewage Drainage: Main urban water supply networks, secondary water supply systems and drainage system.

Agricultural Irrigation: Drip and sprinkler irrigation systems

Industrial Water Use: Cooling water transportation in chemical plants, wastewater treatment

Building Water Supply: High-rise building water supply systems

Mining Water Supply: Corrosion-resistant and impact-resistant, suitable for complex terrains

Power cable protection: can be used to protect cables and used as power conduit.