HDPE pipe: 1, light weight , strong and good toughness 2, keep warm and clean ,aseismatic 3, low tempreature resistant ZHUJI YONGLE PLUMBING ... -resistant, good frozen-resistant, good toughness, aseismatic,impactive-resistant3. Keeps warm, saves energy4. Light but strong, good wearable5. Material: PE6. Specification ...