建筑工程给排水常用管材的特点及应用分析

塑料管是合成树脂加添加剂经熔融成型加工而成的制品。常用塑料管有：硬聚氯乙烯管（PVC—U），氯化聚氯乙烯管（PVC—C）。高密度度聚乙烯管（HDPE），交联聚乙烯管（PE—X），无规共聚聚丙烯管（PP-R），聚丁烯管（PB），工程塑料丙烯晴-丁二烯-苯乙烯共聚物（ABS）等。     

浅谈塑料管材管件的认识与检测及其推广应用

对PVC-U管,PP-R管,PVC-C管,PE管,PB管等几种塑料管材的特点分别进行了介绍,阐述了其优点,对两种工程常用管材管件的检测进行了分析,并指出了各种管材的主要应用领域,从而为工程选材提供了指导。     

怎样鉴别真伪铝塑管

铝塑复合管简称铝塑管,于20世纪70年代初诞生于英国。它由内外层聚乙烯(PE)、中间铝管以及铝塑之间的两层粘合剂一次挤压成型,因其比铸铁管、铜管、PVC管及PE管等具有更多的优点,且省工省时省费用,目前在国内新建工程     

住宅给水管分水布置的4种管材比较

介绍了住宅给水管分水布置技术,通过对住宅工程实例中应用的铜管与塑料管(PB、PEX和铝塑管)等4种给水管材进行经济分析得出,4种给水管材在分水并联布置时的总预算造价中铜管和PEX管相对较低,并对给水铜管和塑料管的分水布置方式进行了技术分析.     

二手房装修必须换些啥

水管应用PE管改造时,应该将管线全部更换为PP-R、PE等新型塑料管材,或较高档次的不锈钢管和铜管。安装时应多加管卡子固定,以保证管路长期稳固。尽量不要把水管暗埋在地面下,以防跑水。     

如何选择给水管

给水管宜选用具有防腐防锈能力的管材，市面上给水管有钢塑复合管、铝塑复合管、聚丁烯管（PB）、硬聚氯乙烯管（UPVC）、镀锌钢管、铜管、不锈钢管、塑料给水管（PPR）等。     

二手房装修必须换些啥

<正>水管用PE管改造时,应该将管线全部更换为PP-R、PE等新型塑料管材,或较高档次的不锈钢管和铜管。安装时应多加管卡子固定,以保证管路长期稳固。尽量不要把水管暗埋在地面下,以防跑水。     

PE管熔融对接技术施工总结

PE管因其优越的技术性能被大量应用于给水管道中。质轻、价廉、耐腐蚀、安装方便等特点逐渐扩大其应用范围。PE管的安装施工质量对PE管的使用寿命影响极大,因此控制好其安装质量是PE管质量控制的重点工作。本文根据笔者自己的施工经验谈谈PE管热熔对接施工时的质量控制。     

铝塑复合板的发展及市场前景

德国KWD塑料信息中心的统计报告指出,从1992年开始,铝塑复合管在欧洲以年增长率超过15%的速度高速增长,至2001年已超过钢管、PPR、PB和PVC-C管,排在铜管和PEX管之后.国内铝塑复合管行业于1997年开始一哄而上,产能远远过剩,经过几年的优胜劣汰,今后几年将保持平稳发展的态势.     

铝塑复合管的发展及市场前景

德国KWD塑料信息中心的统计报告指出，从1992年开始，铝塑复合管在欧洲以年增长率超过15％的速度高速增长，至2001年已超过钢管、PPR、PB和PVC-C管，排在铜管和PEX管之后。国内铝塑复合管行业于1997年开始一哄而上，产能远远过剩，经过几年的优胜劣汰，今后几年将保持平稳发展的态势。     

Pipeline materials modify the effectiveness of disinfectants in drinking water distribution systems

We studied how pipe material can modify the effectiveness of UV- and chlorine disinfection in drinking water and biofilms. This study was done with two pipe materials: copper and composite plastic (polyethylene, PE) in a pilot scale water distribution network. UV-disinfection decreased viable bacterial numbers in the pilot waterworks and outlet water of pipes on average by 79%, but in biofilms its disinfecting effect was minor. Chlorine decreased effectively the microbial numbers in water and biofilms of PE pipes. In outlet water from copper pipes, the effect of chlorination was weaker; microbial numbers increased back to the level before chlorination within a few days. In the biofilms present in the copper pipes, chlorine decreased microbial numbers only in front of the pipeline. One reason for weaker efficiency of chlorine in copper pipes was that its concentration declined more rapidly in the copper pipes than in the PE pipes. These results means that copper pipes may require a higher chlorine dosage than plastic pipes to achieve effective disinfection of the pipes.     

Microbiology, chemistry and biofilm development in a pilot drinking water distribution system with copper and plastic pipes

We studied the changes in water quality and formation of biofilms occurring in a pilot-scale water distribution system with two generally used pipe materials: copper and plastic (polyethylene, PE). The formation of biofilms with time was analysed as the number of total bacteria, heterotrophic plate counts and the concentration of ATP in biofilms. At the end of the experiment (after 308 days), microbial community structure, viable biomass and gram-negative bacterial biomass were analysed via lipid biomarkers (phospholipid fatty acids and lipopolysaccharide 3-hydroxy fatty acids), and the numbers of virus-like particles and total bacteria were enumerated by SYBR Green I staining. The formation of biofilm was slower in copper pipes than in the PE pipes, but after 200 days there was no difference in microbial numbers between the pipe materials. Copper ion led to lower microbial numbers in water during the first 200 days, but thereafter there were no differences between the two pipe materials. The number of virus-like particles was lower in biofilms and in outlet water from the copper pipes than PE pipes. Pipe material influenced also the microbial and gram-negative bacterial community structure in biofilms and water.     

The effects of changing water flow velocity on the formation of biofilms and water quality in pilot distribution system consisting of copper or polyethylene pipes

We studied the effects of flow velocity on the formation of biofilms and the concentration of bacteria in water in copper and plastic (polyethylene, PE) pipes. The formation of biofilms increased with the flow velocity of water. The increase in microbial numbers and contents of ATP was clearer in the PE pipes than in the copper pipes. This was also seen as increased consumption of microbial nutrients in the pipeline system. This indicates that the mass transfer of nutrients is in major role in the growth of biofilms. However, the increased biomass of biofilms did not affect microbial numbers in the water. Rapid changes in water flow rate resuspended biofilms and sediments which increased the concentrations of bacteria and copper in water. The disturbance caused by the changing water flow was also seen as an increase in the particle counts and water turbidity recorded with online instrumentation.     

聚乙烯（PE）管在天然气工程中的应用

介绍了聚乙烯（PE）管在天然气工程中应用时管道的焊接、管道施工等,阐述了管道连接时应注意的问题及相关建议,通过PE管与钢管的比较,总结了PE管的一系列优点,说明PE管在天然气工程中具有良好的发展前景。     

PE100聚乙烯管道应用于天然气中压主干管的分析

本文依据《聚乙烯燃气管道工程技术规程》（q163—2008）,比较了PE100SDRl7．6系列聚乙烯管道与PES0SDR11系列聚乙烯管道和钢管的通过能力和工程投资,分析了PE100SDR17．6系列聚乙烯管道应用于城市天然气中压主干管的可能性．提出了PE100SDR．17．6系列聚乙烯管道替代相应规格钢管的方案．     

建筑新概念——铜管在供暖系统中的应用

为提升建筑品质,建筑供水系统已经开始采用铜管。本文介绍了铜质管道用于建筑给水、供暖工程的优越特性,对其在各种条件下的耐腐蚀性能及其它性能进行了分析,指出了铜管在设计及施工中应把握的问题。根据市场调研结果,结合工程应用实例,对各种管材在工程中的应用成本进行了分析和比较。建议在供暖工程中采用性价比优良的铜质管道。     

埋地聚乙烯给水管道在再生水管网中的应用

总结了聚乙烯(PE)管道的优点,并结合再生水对供水管网的要求,探讨了作为新型管材的PE管应用于再生水管网有很好的适用性。综合介绍了PE管材的规格尺寸、连接方式和铺设中须注意的重点等,并结合国家政策对化学建材产业的支持,阐述了聚乙烯管道在再生水管网中的应用前景。     

室外聚乙烯给水管应用及生产浅析

通过对聚乙烯 (PE)管和聚氯乙烯 (UPVC)管的性能及应用情况的对比 ,阐明 PE管的发展前景。     

浅谈PE管在人工煤气输配系统中的应用

本文介绍了国内聚乙烯管开发工作情况，对人工煤气输配系统应用聚乙烯管道的某些参数如ＳＰＲ，密度和熔流率，化学稳定性，柔性，作了简要评述。     

聚乙烯（PE）管应用于定向钻的探讨

PE管在燃气管网中的应用日趋广泛,目前正在尝试性地应用于定向钻穿越.文章就其允许的曲率半径、穿越长度、防腐及回拖时所受的拉伸应力等进行了讨论与比较.