在家装工程中，管材如何选购？如何判断管材的质量好坏？现在收罗汇聚了管材选购和辨别质量的秘籍，为您的爱家装修提供帮助。     

                                                                       
  一、是“捏”硬度。                                                    

                                                                          
PP－R管具有相当的硬度，随随便便可以捏变形的管，肯定不是PP－R管。

                                                    
  二、是“闻”气味。                                                 

                                                                
PP－R管主要材料是聚丙烯，好的管材没有气味，差的则有怪味，很可能是掺和了聚乙烯，而非聚丙烯。                                                            

                                                                        
  三、是“摸”质地。                                                         

一般来说，颗粒粗糙的很可能掺和了杂质。                                  

                                                        
  四、是“看”颜色。                                                   

                                                                  
PP－R管主要有白灰绿几种，消费者往往认为白色才是的，其实颜色并非判断质量好坏的标准。                                                       

                                                              
  五、是“烧”烟嗅味。                                       

                                                                   
原料中混合了回收塑料和其他杂质的PP－R管会冒黑烟，有刺鼻气味。而好的材质燃烧后不仅不会冒黑烟、无气味，燃烧后，熔出的液体依然很洁净。                            

                                                                            
  六、是“砸”弹性。                                                        

                                                                          
好的PP－R管，“回弹性”好，容易砸碎自然不是好的PP－R管。但硬度强不等于弹性好，有些厂家通过加入过多碳酸钙等杂质来提高硬度，怎么都砸不碎，用久了容易脆裂。