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PPR管施工后须经试压验收后方能封管和使用。PPR管安装主要采用热熔管件，熔接时间和压力不好掌握，工艺随机性较大，在热熔推接过程中易产生堆料从而减小通径，并使熔接处成为不规则的缺陷区，产生应力集中，影响PPR管价格的长期性能；对于PPR管的电熔连接，ppr管件热熔尺寸，由于电熔丝主要采用促进PPR降解的铜，会加速PPR管的老化。
PPR pipe can be sealed and used only after pressure test and acceptance.The PPR pipe is mainly installed with hot-melt pipe fittings. The welding time and pressure are not well mastered， and the process is random. In the process of hot melt push welding， it is easy to generate stacking materials to reduce the diameter， and make the fusion joint become an irregular defect area， which produces stress concentration， which affects the long-term energy of price of PPR pipe; For the electric melting connection of PPR pipe，ppr热熔管件品牌， the aging of PPR pipe will be accelerated because copper is mainly used to promote the degradation of PPR.
PPR管热熔连接方法
安装准备——预制加工——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
Hot melt joining method of PPR tubeInstallation preparation - prefabrication - main pipe installation - riser installation - branch pipe installation - pipe test - pipe flushing - disinfection in the pipe cavity
目前，法兰连接中大的问题主要是法兰本身不合格和法兰连接不合格。
现在市场上销售的一些法兰存在的质量问题有：
①法兰的钢材不合格，耐压强度较低，在使用若干个月或若干个年后，出现渗水。
②法兰的螺栓孔外缘距法兰的边缘太小，小于5mm，在螺栓紧固时，易使法兰边缘。
At present，阜阳ppr热熔管件， the major problems in flange connection are the unqualified flange itself and the flange connection is unqualified.
Some of the quality problems of the flange sold in the market are as follows:
① The flange steel is unqualified and the pressure resistance is low. After several months or years of use，ppr热熔管件价格， water seepage occurs.
② The outer edge of bolt hole of flange is too small from the flange edge， less than 5mm. When the bolts are tightened， it is easy to make the flange edge.
