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埋地聚乙烯给水管道的安装方法有知道的吗？

埋地聚乙烯给水管道的安装方法有知道的吗？

浏览：40次 | 提问时间： 08-07 02:54

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一城一心一旧人 08-07 02:55

你好，1 聚乙*给水塑料管(PE)，包括：低密度聚乙*给水塑料管(LDPE)；中密度聚乙*给水塑料管 (MDPE)；高密度聚乙*给水塑料管(HDPE)； *腈—丁二*—*乙*(ABS) 2关于产品标准新型给水管材的产品标准，目前，执行的标准各有不同

凉兮Arman 08-07 03:03

你好：1.建筑内给水管道压力试验（1）试压前的准备工作1）试压前应对将要试压的系统进行一次全面的检查，检查系统的各类接口和连接点是否严密，检查系统各支吊架的位置是否正确，安装是否牢靠。2）备好备齐试压用的试压泵、压力表、切断阀、泄水阀、止回阀、放气阀等。 3）系统连接，将试压泵与系统连接，且在系统的最高点加设放气阀，最低点加设泄水阀。（2）硬聚*乙*（PVC-U）、*化聚*乙*（PVC-C）、聚乙*类给水管道压力试验 1）将试压管段各配水点封堵，缓慢向系统供水，同时打开系统最高点的排气阀，待排气阀连续不断的出水时，说明系统充水完毕，关闭排气阀。 2）系统充满水后，对系统进行水密性检查。 3）加压宜采用手动加压泵，升压应缓慢，升压的时间不少于10min。 4）强度试验。强度试验的试验压力应为工作压力的1.5倍，但不小于0.6MPa，当升压至规定压力时，停止加压，稳压1h，压力降不得超过0.05MPa，且系统无明显渗漏，强度试验合格。5）严密性试验。强度试验合格后，泄压至工作压力的1.15倍，稳压2h，压力降不得超过0.03MPa，且系统的各类接口及连接点无渗漏为合格。（3）建筑给水聚丙*（PP-R）管道压力试验1）压力表应安装在管道系统的最低点，加压泵宜设在压力表附近。2）向系统充水，同时打开系统最高点的排气阀，待排气阀连续不断的排出水时，说明系统充水已满，关闭排气阀。 3）系统充满水后，对系统进行水密性检查。 4）加压宜采用手动加压泵，升压应缓慢。5）试验压力。冷水管试验压力应为系统工作压力的1.5倍，但不得小于0.9MPa；热水管试验压力应为工作压力的2倍，但不得小于1.2MPa。6）强度试验。试验时间为1h，用加压泵将压力增至试验压力，然后每隔10min重新加压至试验压力，重复两次。记录最后一次泵压10min及40min后的压力，它们的压力差不得大于0.06MPa。7）严密性试验。试验时间为2h。强度试验合格后，立即进行严密性试验，记录下强度试验合格后2h的压力。此压力比强度试验结束时的压力降不超过0.02MPa，且系统无渗漏为合格。(4)建筑给水金属管道压力试验建筑给水金属管道包括建筑给水铜管、建筑给水薄壁不锈钢管和钢塑复合管等。建筑给水金属管由于强度高、刚性好、有着较好的抗变形能力，因此水压试验较各种塑料管简便。希望帮助到你

谎言蔓延 08-07 03:12

1、工艺流程
　　安装准备——预制*——干管安装——立管安装——支管安装——管道试验——管道冲洗——管腔内消毒
　　2、施工准备
　　认真熟悉图纸，根据施工方案决定的施工方法做好施工准备工作。参照有关专业设备图和装修建筑图，核对各种管道和坐标、标高是否交叉、管道排列所用空间是否合理，有问题应及时与设计和有关人员研究解决，办好变更洽商记录
　　3、预制*
　　总体原则是按设计图纸画出管道分路、管径、预留管口、阀门位置等施工草图，在实际施工的结构位置上标记，按标记分段量出实际安装的尺寸，然后再按此尺寸进行下料预制。

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埋地聚乙烯给水管道的安装方法有知道的吗？