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發(fā)布時(shí)間：2021-12-31 01:01
PPR管為什么會(huì)有低溫脆性的特點(diǎn)？它是由單體和少量乙烯單體在加熱、加壓和催化劑作用下無(wú)規(guī)共聚得到的。乙烯單體隨機(jī)地分布到長(zhǎng)鏈中，其中乙烯單體一般控制在3-5%之間。乙烯含量和乙烯與的聚合方式?jīng)Q定了其具有低溫脆性的特點(diǎn)。
Why does PPR pipe have the characteristics of low temperature brittleness? It is obtained by random copolymerization of monomer and a small amount of ethylene monomer under heating， pressure and catalyst. Ethylene monomer is randomly distributed in long chain， and ethylene monomer is generally controlled between 3-5%. The content of ethylene and the polymerization of ethylene determine its low temperature brittleness.
ppr 管材與鋼管法蘭連接 大口徑的 ppr 管材，比如DN 110以上，可以通過(guò)法蘭與鋼管進(jìn)行機(jī)械連接，只需要將法蘭上的螺絲擰緊即可。 Large diameter PPR pipes， such as DN 110 or above，PVC排水管排名， can be mechanically connected with the steel pipe through the flange，PVC排水管， and only need to tighten the screws on the flange.
ppr管在電氣部分：
衛(wèi)生間的開(kāi)關(guān)盡量放在室外，PVC排水管電話(huà)，若放在室內(nèi)有淋浴的需加裝防濺盒，使用不方便還會(huì)增加成本。
衛(wèi)生間等電位聯(lián)結(jié)線好利用近的柱筋引入（若有均壓環(huán)更好）。
PPR tube in the electrical part:
The switch of toilet should be put outdoors to the full. If it is put indoors with shower， splash proof box should be added， which will increase the cost if it is inconvenient to use.
The equipotential bonding line in the toilet should be introduced by using the bar near the column (if there is a grading ring， it is better).
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