OEM Dual Wall PP Pipes Tubular For Industrial Wastewater Discharge​

PP pipes are tubular products made from polypropylene (PP) as the main raw material, manufactured through processes like extrusion molding. They are among the most widely used plastic pipes available today, with common types including standard PP pipes and PP-R pipes. PP pipes offer remarkable advantages for industrial wastewater discharge systems, primarily due to their exceptional corrosion resistance, balanced mechanical properties, and long-term cost-effectiveness.

They exhibit high chemical stability at room temperature, remaining unaffected by most acids (such as hydrochloric acid and sulfuric acid with a concentration ≤ 90%), alkalis (like sodium hydroxide), and salt solutions—effectively withstanding the corrosive nature of complex industrial wastewater from sectors like chemical engineering, electroplating, and metallurgy. Unlike metal pipes, PP pipes are non-metallic, eliminating the risk of electrochemical corrosion and rusting caused by electrolyte-containing wastewater or fluctuations in water pH and dissolved oxygen, thus preventing wastewater leakage and environmental pollution. Additionally, their lightweight nature (density of only 0.90-0.91 g/cm³, about 1/8 that of steel pipes) allows for easy transportation and installation without heavy lifting equipment, while their smooth inner walls reduce the adhesion of suspended solids and sediment, minimizing pipe clogging and the need for frequent maintenance. Over a 15-20 year service life, PP pipes also reduce total lifecycle costs significantly, as they require no regular anti-corrosion treatments (unlike steel pipes) and have much lower annual maintenance expenses compared to traditional materials.​

In terms of specific applications, PP pipes are widely used in various industrial wastewater discharge scenarios to meet diverse operational needs. In the chemical industry, they are employed to transport wastewater containing organic solvents, acidic or alkaline residues, and chemical by-products, leveraging their corrosion resistance to avoid material degradation and contamination. The electroplating industry relies on PP pipes to convey wastewater with heavy metal ions (such as chromium, nickel, and copper), as their inert surface prevents metal ion adsorption and pipe corrosion, ensuring the stable operation of subsequent wastewater treatment processes. In the food processing and metallurgy sectors, PP pipes handle wastewater with moderate temperatures (usually ≤ 40℃) and high levels of suspended solids—their smooth inner walls maintain unobstructed flow, while their good impact resistance and low-temperature toughness (remaining non-brittle at -10℃ to 0℃) adapt to both underground burial and above-ground installation environments. Even in scenarios with flammability risks, such as oil and gas-related industries, flame-retardant modified PP pipes (with an oxygen index ≥ 27) can be utilized to enhance safety by inhibiting flame spread, making them a versatile and reliable choice across multiple industrial fields.