电容胶圈双密封管施工规范VIP免费

管材、管件要求和物理性能胶圈电熔双密封聚乙烯复合管材，分增强型和普通型管材等，其规格、尺寸和公称压力按下列表采用。管材基本尺寸、偏差及公称压力公称外径(mm)公称压力（MPa）0.60.81.01.41.62.02.53.5基本尺寸极限偏差公称壁厚及极限偏差（mm）50+1.24.55.51.26.5+1.56.5+1.563+1.25.75.5+1.26.5+1.56.5+1.575+1.24.55.0+1.26.0+1.26.5+1.57.0+1.590+1.44.35.45.5+1.56.0+1.57.0+1.57.0+1.5110+1.54.25.35.5+1.56.3+1.57.0+1.57.0+1.58.5+1.510.0+1.5140+1.75.46.76.0+1.57.0+1.58.0+1.58.5+1.510.0+1.511.0+1.5160+2.06.27.76.5+1.58.0+1.59.0+1.59.5+1.511.0+2.012.5+2.0200+2.37.79.67.0+1.58.5+1.59.5+1.510.5+2.012.5+2.014.0+2.2225+2.58.610.88.0+1.59.5+1.510.5+2.012.0+2.013.0+2.0250+2.59.611.910.5+2.011.0+2.012.0+2.213.5+2.215.0+2.2315+2.712.115.011.5+2.012.0+2.013.0+2.515.0+2.518.0+3.355+2.813.616.912.0+2.213.0+2.214.0+2.517.0+3.20.0+3.400+3.015.319.112.5+2.214.0+2.215.0+2.818.0+3.450+3.317.221.513.5+2.516.0+2.518.0+2.820.0+3.500+3.219.123.815.5+2.818.0+2.821.0+3.024.0+3.560+3.221.426.720.0+3.024.0+3.026.0+3.0630+3.224.130.023.0+3.27.0+3.30.0+3.000710+3.527.233.927.0+3.033.0+3.36.0+3.800+3.530.638.130.0+3.038.0+3.42.0+3.管件的公称压力PN胶圈电熔双密封聚乙烯复合供水管管件分为普通型管件和增强型管件，管件的不圆度应控制在公称外径的1.5%以内。管件的规格、尺寸见附录。管件类型管件公称外径dn(mm)≤200225250315355400450500560630710800普通型管件PN（MPa）1.61.0增强型管件PN（MPa）3.52.52.01.6胶圈电熔双密封聚乙烯复合管所用增强金属丝表面应无油污、无锈斑、无灰垢等污物及无破损、无压痕等对使用有害的缺陷，金属丝的延伸率、抗拉强度、直径及其允许偏差应符合现行国家标准《胎圈用钢丝》GB/T14450的要求。芳纶纤维是一种合成有机聚合物高性能纤维，芳纶纤维强度应大于等于2500N/mm2，，断裂延伸率应大于等于3.3%。金属丝或纤维的缠绕角度范围应为53°～60°，按左旋与右旋方向交叉缠绕。金属丝的最小直径，断面最少金属丝条数见表一。表一复合中间层增强金属丝最小直径(mm)，断面最少金属丝条数（根）公称外径dn（mm）公称压力PN（MPa）1.01.41.62.02.53.5条数丝径条数丝径条数丝径条数丝径条数丝径条数丝径50―200.6260.6320.663―280.6360.6440.675―240.6360.6480.6660.690―400.6600.6800.61100.6110440.6600.6600.6840.6660.8840.8140600.6800.6800.61200.61000.81001.0160680.6960.6960.61300.61160.81241.02001100.61100.81100.81400.81301.01801.22251000.81400.81400.81500.81501.02501200.81600.81600.81441.01801.03152100.82101.02101.03001.03001.23552001.02401.12401.13301.13601.24002501.03001.13001.13001.24502701.03901.13901.13901.25003401.04001.24001.24001.45602801.24001.44001.46303401.24401.44401.47104201.25001.45001.48004801.16001.46001.4注：标明最少金属丝条数的为增强型管道；0.6Mpa、0.8Mpa和表内用“―”标明为无增强普通型管材材料规定1胶圈电熔双密封聚乙烯复合管道所用聚乙烯材料为PE100或PE80，应符合现行国家标准《给水用聚乙烯（PE）管材》GB/T13663-2000中4和《给水用聚乙烯(PE)管道系统第2部分：管件》GB/T13663.2-2005中4的要求。2密封胶圈材料应符合现行国家标准《橡胶密封件给、排水管及污水管道用接口密封圈》GB/T21873的要求。卫生要求卫生性能应符合现行国家标准《生活饮用水输配水设备及防护材料的安全性评价标准》GB/T17219的要求。物理性能管材、管件短期静液压强度和爆破压力试验强度应符合下列表内的规定：短期静液压强度及爆破压力试验温度（℃）短期静液压强度及爆破压力（MPa）试验时间（h）要求202×PN1不破裂、不渗漏爆破压力≥3×PN-爆破注：当管材及管件的公称外径dn为250mm及以上时，对爆破压力不做强制性要求。2管道系统的最大内水压力不得超过管材、管件的公称压力，在输送20℃以上介质时应对产品标称的公称压力进行修正，按下列公...