优点：
1.化学稳定性：由于分子极性不足，HDPE材料在化学稳定性方面具有良好的性能，尽管几乎没有氧化剂，大多数化学介质不能损坏，耐腐蚀和防污，内部流量在长时间使用后不会降低，HDPE管是一种环保型产品
2.强度接头强度：主要指热焊接，例如接头少，无泄漏
3.安装方便：轻便，安装方便，可降低安装成本，特别是在恶劣的环境下
4.较高的流量：平滑的内墙导致较低的压力损失和较高的体积
5.更好的缠绕和弯曲能力：垂直允许弯曲有利于在波动地表上的构造
6.低温保存：抗脆性温度达到-70°C，在普通低温（-30°C）下，无需适应特殊防护或保护，冬季安装方便，同时，耐水试验可通过水锤承受2.5倍额定压力
7.耐腐蚀性：德国实验室证明HDPE材料的耐腐蚀性是铜的几倍
8.使用寿命：正确使用50年以上

Advantages:
1. Chemical stability: as lack of polarity in molecules, HDPE material has good performance in chemical stability despite of few oxidants, most of chemical medium cannot damage, corrosion-resistant and anti-stain, interior flow capacity not be reduced after long time usage, HDPE pipe is a kind of environment-friendly product
2. Formidable joint strength: mainly refer to thermal welding for example, few joints, no leak
3. Convenient installation: lightweight and easy installation, can reduce installation cost, especially in bad environment
4. Higher flow capacity: smooth interior walls result in lower pressure loss and higher volume
5. Better wrap and bend ability: vertical allowable bending benefits the construction on fluctuant earth surface
6. Low temperature preservation: anti-embrittlement temperature reaches -70°C, and under common low temperature (-30°C), no need to adapt special defending or protecting, convenient to install in winter, in the mean time, pressure-resistant test can stand 2.5 times nominal pressure by water hammer
7. Corrosion-resistant: Germany lab ever proofs anti-corrosion of HDPE material is several times than copper
8. Longevity: more than 50 years under proper use