Page 55 - Building services book
P. 55

Polyethylene (High Density Polyethylene)









                 Specification                               Advantages                               Disadvantages


          Function same as                        Corrosion                                • Fusion jointing

         pipe uPVC                                resistant                                  requireds skilled


                                                  Relatively light-                         installer and special

                                                  weight                                     equipment

                                                  Flexible                                  • Leakage detection

                                                  Alternative                               complicated

                                                  installation                               • Installation of

                                                  techniques possible  fittings/ repair

                                                  ( moling)                                  complicated in large

                                                  Out -of-trench                            diameter

                                                  jointing possible                          >335mm
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