rr r r PE给水管是以专用聚乙烯为原材料经塑料挤出机一次挤塑成型的管材，具有良好的可焊接性，抗环境应变力和抗快速应力开裂性。在额定温度和压力下，可安全使用50年以上。除少数强氧化剂外，可耐多种化学介质的侵蚀，无电化学腐蚀。具有强耐磨性，材质无毒无结垢层，不滋生细菌，可回收性高，较好地避免了管材的二次污染。该管材韧性好，耐冲击性能高，不会因外界重力造成管道破裂。 其热熔或电熔接口的强度高于管体本体，接缝不会由于土壤移动或活载荷的作用而断开。管道质量轻，焊接简单，施工方便，大量降低工程造价。小口径管材可盘卷，减少接口，连接方便。主要应用于城市及村镇自来水给水管道；燃气管道（天然气、液化气、人造煤气等）；煤矿通风管道、矿浆输送管道；集中供热护套管；海水及腐蚀介质管道；石油及化工管道； 排污管道；电缆护套管；水利及农田灌溉等。r r r r r r r 公称外径r r r r r SDR26 r r r r r SDR21 r r r r r SDR17 r r r r r SDR13.6 r r r r r SDR11 r r r r r r r 公称压力PN,MPA r r r r r r r 0.60 r r r r r 0.80 r r r r r 1.00 r r r r r 1.25 r r r r r 1.60 r r r r r r r 公称壁厚r r r r r 偏差r r r r r 公称壁厚r r r r r 偏差r r r r r 公称壁厚r r r r r 偏差r r r r r 公称壁厚r r r r r 偏差r r r r r 公称壁厚r r r r r 偏差r r r r r r r 32 r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r 3.00 r r r r r 0.5 r r r r r r r 40 r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r 3.70 r r r r r 0.6 r r r r r r r 50 r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r 4.60 r r r r r 0.7 r r r r r r r 63 r r r r r r r r r r r r r r r r r r r r r r r r r r r r r 4.70 r r r r r 0.8 r r r r r 5.80 r r r r r 0.9 r r r r r r r 75 r r r r r r r r r r r r r r r r r r r r r 4.50 r r r r r 0.7 r r r r r 5.60 r r r r r 0.9 r r r r r 6.80 r r r r r 1.1 r r r r r r r 90 r r r r r r r r r r r r r 4.30 r r r r r 0.7 r r r r r 5.40 r r r r r 0.9 r r r r r 6.70 r r r r r 1.1 r r r r r 8.20 r r r r r 1.3 r r r r r r r 110 r r r r r 4.20 r r r r r 0.7 r r r r r 5.30 r r r r r 0.8 r r r r r 6.60 r r r r r 1.0 r r r r r 8.10 r r r r r 1.3 r r r r r 10.00 r r r r r 1.5 r r r r r r r 125 r r r r r 4.80 r r r r r 0.8 r r r r r 6.00 r r r r r 0.9 r r r r r 7.40 r r r r r 1.2 r r r r r 9.20 r r r r r 1.4 r r r r r 11.40 r r r r r 1.8 r r r r r r r 140 r r r r r 5.40 r r r r r 0.9 r r r r r 6.70 r r r r r 1.1 r r r r r 8.30 r r r r r 1.3 r r r r r 10.30 r r r r r 1.6 r r r r r 12.70 r r r r r 2.0 r r r r r r r 160 r r r r r 6.20 r r r r r 1.0 r r r r r 7.70 r r r r r 1.2 r r r r r 9.50 r r r r r 1.5 r r r r r 11.80 r r r r r 1.8 r r r r r 14.60 r r r r r 2.2 r r r r r r r 200 r r r r r 7.70 r r r r r 1.2 r r r r r 9.60 r r r r r 1.5 r r r r r 11.90 r r r r r 1.8 r r r r r 14.70 r r r r r 2.3 r r r r r 18.20 r r r r r 3.6 r r r r r r r 225 r r r r r 8.60 r r r r r 1.3 r r r r r 10.80 r r r r r 1.7 r r r r r 13.40 r r r r r 2.1 r r r r r 16.60 r r r r r 3.3 r r r r r 20.50 r r r r r 4.0 r r r r r r r 250 r r r r r 9.60 r r r r r 1.5 r r r r r 11.90 r r r r r 1.8 r r r r r 14.80 r r r r r 2.3 r r r r r 18.40 r r r r r 3.6 r r r r r 22.70 r r r r r 4.5 r r r r r r r 280 r r r r r 10.70 r r r r r 1.7 r r r r r 13.40 r r r r r 2.1 r r r r r 16.60 r r r r r 3.3 r r r r r 20.60 r r r r r 4.1 r r r r r 25.40 r r r r r 5.0 r r r r r r r 315 r r r r r 12.10 r r r r r 1.9 r r r r r 15.00 r r r r r 2.3 r r r r r 18.70 r r r r r 3.7 r r r r r 23.20 r r r r r 4.6 r r r r r 28.60 r r r r r 5.7 r r r r r r r 355 r r r r r 13.6 r r r r r 2.1 r r r r r 16.9 r r r r r 3.3 r r r r r 21.1 r r r r r 4.2 r r r r r 26.1 r r r r r 5.2 r r r r r 32.2 r r r r r 6.4 r r r r r r r 400 r r r r r 15.3 r r r r r 2.3 r r r r r 19.1 r r r r r 3.8 r r r r r 23.7 r r r r r 4.7 r r r r r 29.4 r r r r r 5.8 r r r r r 36.3 r r r r r 7.2 r r r r r r r"};
