Compared with PVC, HDPE piping is generally:

• A. More rigid
• B. Stronger and more durable than PVC
• C. More brittle
• D. Less suitable for high pressure

Answer: (B)

HDPE pipes are designed for toughness and flexibility, which translates into better performance under real-world conditions. The polymer is ductile and highly impact resistant, so it can bend slightly without cracking and can absorb pressure surges and temperature changes more effectively than PVC. Joints in HDPE are typically fusion-welded, creating a continuous, leak-free line that adds to the overall durability, especially in challenging soils or when movement occurs. In contrast, PVC is stiffer and more brittle in cold or after impacts, making it less forgiving in some service conditions. Because of these properties, HDPE is generally stronger and more durable than PVC, particularly for high-pressure applications. The other options don’t fit because HDPE is not more rigid, not more brittle, and not less suitable for high pressure.