Created on 08.17

Adhere to High Quality Standards | Yandang Brand Pipes Support Large Seawater Desalination Project

Yandang Brand is proud to announce its role in a landmark Belt and Road desalination project, delivering high-quality CPVC/UPVC pipes that meet stringent anti-corrosion standards.

Seawater desalination projects are benchmark projects under the Belt and Road Initiative for overseas water resource cooperation and national strategic infrastructure for water security, with extremely strict access standards for pipes regarding high-salinity corrosion resistance, low precipitation, long-term sealing integrity and full-lifecycle stability. As the core supporting system of desalination plants, industrial process piping networks must withstand extreme conditions including high-concentration chloride ions (>20,000 ppm), pH fluctuation and marine biofouling, while meeting the systematic requirements of ultra-low energy consumption operation.

Yandang CPVC/UPVC Pipes Power 300,000 m³ Seawater Desalination Project

This large seawater desalination project, with a daily treatment capacity of 300,000 m³, fully adopts Yandang brand high-quality CPVC/UPVC industrial pipes. Based on a Life Cycle Cost (LCC) evaluation framework with a 30-year operation period as the benchmark, the project team systematically matched corrosion risks and material selections across different process sections:

Process Section	Media Characteristics	Corrosion Risk	Yandang Solution
Intake & Pretreatment	High-turbidity seawater + residual chlorine	Pitting, crevice corrosion	UPVC (high chlorine resistance)
RO High-pressure	High-pressure brine	Stress corrosion cracking	CPVC (high temp & pressure resistance)
Post-mineralization & Water Supply	Lime + CO₂	Scaling + abrasion	UPVC/CPVC
Chemical Dosing	HCl / NaOH	Strong corrosion	CPVC

The products feature excellent chloride-ion corrosion resistance, strong chemical stability, low flow resistance and environmental compliance, fully suitable for the above core process scenarios, fully meeting the high-standard building material specifications and internationally recognized standards (GB/ASTM) for large desalination plants.

The project was efficiently built and commissioned in just 2 years, becoming the first commissioned project of its kind in the country. During the rapid delivery process, Yandang pipes ensured zero-delay integration of the piping system into the project's critical path through three core delivery metrics:

 Reliability — High-purity raw materials + precision extrusion process ensure zero unplanned replacements within the 30-year design life.

Constructability —Solvent cement joining process aligns with the project's modular prefabrication strategy, significantly reducing on-site installation hours.

Supply Synchronization — Pipe delivery schedule was aligned week-by-week with modular installation plans, causing zero critical-path delays due to material delivery.

Since operation, Yandang pipes have met the core requirements of ultra-low energy consumption, green environmental protection and long-term reliable operation with strict quality control. From a full-lifecycle perspective, the engineering plastic piping solution reduces maintenance frequency by approximately 70% compared to traditional lined steel pipe solutions, with significantly mitigated unplanned downtime risk, providing solid hardware assurance for the continuous and stable daily water supply of 300,000 m³. This benchmark practice fully demonstrates Yandang's comprehensive strength and rigorous quality control standards in large-scale desalination and aggressive-media applications.

Related News