25*4.2的热水管,冷热水都用这个,品牌不同当然价格也不同 ppr分冷热水管: 1、管径为外圆 尺寸:20/25/32/40/50/63/75/90/110 mm 2、冷水1.25mpa壁厚:2.0/2.3/2.9/3.7/4.6/5.8/6.8/8.2/10 mm 3、冷水1.6 mpa壁厚:2.3/2.8/3.6/4.5/5.6/7.1/8.4/10.1/12.3 mm 4、热水2.0mpa壁厚:2.8/3.5/4.4/5.5/6.9/8.6/10.3/12.3/15.1 mm 20210311