(1)质轻、搬运便利
(1) light quality and convenient handling
(2)耐腐蚀
(2) corrosion resistance
(3)化学稳定性强
(3) strong chemical stability
(4)流体阻力小
(4) small fluid resistance
(5)耐老化、寿命长
(5) aging resistance and long life
(6)价格低
(6) low price
(7)易于连接,施工方便、安装费用低
(7) easy connection, convenient construction and low installation cost