PE管价格 ^{DN,20,90,110,160,200,315,125,140,180,225,250,280,300,355,400,450,500,560,630,25,32,40,50,63,75,150,710,800,900,1000,1200,1400,1600,1800,DN等PE管价格多少钱一米,规格表}