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日丰PPR管道安装施工要注意什么？

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日丰PPR管道安装施工要注意什么？

浏览：37次 | 提问时间： 08-06 05:15

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2个答案

纠缠呼吸 08-06 05:15

1、PP-R管较金属管硬度低、刚性差,在搬运、施工中应加以保护,避免不适当外力造成机械损伤.在暗敷后要标出管道位置,以免二次装修破坏管道.   

2、PP-R管5℃以下存在一定低温脆性,冬季施工要当心,切管时要用锋利*具缓慢切割.对已安装的管道不能重压、敲击,必要时对易受外力部位复盖保护物.   

3、PP-R管长期受紫外线照射易老化降解,安装在*或阳光直射处必须包扎深色防护层.

  4、PP-R管除了与金属管或用水器连接使用带螺纹嵌件或法兰等机械连接方式外,其余均应采用热熔连接,使管道一体化,无渗漏点.   

5、PP-R管的线膨胀系数较大(0.15mm/m℃),在明装或非直埋暗敷布管时必须采取防止管道膨胀变形的技术措施.   

6、管道安装后在封管(直埋)及复盖装饰层(非直埋暗敷)前必须试压.冷水管试压压力为系统工作压力的1.5倍,但不得小于10MPa;热水管试验压力为工作压力的2倍,但不得小于1.5MPa.试压时间与方法技术规程规定.

惆怅浊酒洒 08-06 05:24

你好。
注意事项如下：
1、PPR管较金属管硬度低、刚性差，在搬运、施工中应加以保护，避免不适当外力造成机械损伤。在暗敷后要标出管道位置，以免二次装修破坏管道。   
2、PPR管5℃以下存在一定低温脆性，冬季施工要当心，切管时要用锋利*具缓慢切割。

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