Recently, the Ministry of Water Resources officially released the Catalogue of Advanced, Mature and Applicable Water Saving Technologies and Equipment (2025). Qinglong Pipes Industry Group Co., Ltd.’s independently developed ultra-low leakage PVC-O pipes water saving technology was successfully included. This is an authoritative recognition of the company’s technological strength at the national level, and a strong encouragement for the long-term commitment of Qinglong Pipes Industry Group Co., Ltd.(hereinafter referred to as Qinglong Pipes) to the water saving sector and its practice of the green development philosophy.

Oriented Polyvinyl Chloride (PVC-O) pipes for pressurized water conveyance are a new generation of high-performance pipe products formed through a special biaxial stretching process. This process reorients and rearranges the molecular chains of conventional PVC-U pipes. As an upgraded iteration of PVC-U pipes, PVC-O overcomes inherent shortcomings of PVC-U through physical stretching, offering advantages such as lower material consumption, higher water conveyance efficiency, and significantly improved toughness and rigidity.

Hardcore Technology Unpacked: Building a Strong Water Saving Defense from the Source

Against the backdrop of increasingly stringent constraints on water resources, leakage in pipe networks remains one of the biggest pain points driving water waste. Taking Shanghai as an example, by carrying out targeted rectification measures and reducing the leakage rate of its water supply network to 7.4%, the city achieved notable water saving results. Qinglong Pipes’ ultra-low leakage PVC-O pipe water saving technology is a “water saving tool” designed precisely to address this core challenge.

Through precise control of the temperature range, the technology applies both axial and circumferential biaxial stretching to PVC preforms, enabling polymer chains to form a highly ordered oriented structure, which is then “locked in” by rapid cooling. This gives the pipe far greater strength and toughness than ordinary PVC pipes. During production, the coordinated use of dynamic temperature field control, biomimetic drag reducing expansion molds, and an online intelligent monitoring system ensures consistent and stable performance for every meter of pipe produced.

Oriented Polyvinyl Chloride (PVC-O) pipe for pressurized water conveyance

Compared with traditional pipe materials, the technology’s key advantages are reflected in three dimensions. First, superior impermeability, minimizing long term leakage risks at the material level. Second, low carbon and energy saving, reducing raw material use by nearly half during manufacturing and cutting carbon emissions by about 35% compared with PE pipes. Third, economic efficiency, with faster installation and construction, boosting speed by more than 50% and reducing overall costs by 30%.

Policy Support + Corporate Commitment: Advancing Water Saving Together

The Ministry of Water Resources encourages the on the ground application of technologies included in the catalogue, while a joint plan by the Ministry of Industry and Information Technology and the Ministry of Water Resources also focuses on cultivating leading enterprises in water saving equipment, with policy dividends continuing to be released. Past data show that both the application and benefits of nationally promoted technologies have improved markedly. With Qinglong Pipes’ technology now included, its multi-scenario deployment will accelerate, helping reduce leakage in pipe networks.

As a leading enterprise in the pipe industry, Qinglong Pipes has consistently fulfilled its water saving mission through technological innovation. This inclusion is both an honor and a responsibility. Going forward, the company will take this as an opportunity to deepen R&D and commercialization, expand application scenarios, respond to policy calls by participating in contract-based water saving management, and work with partners to build a new landscape for water conservation.