Characteristics of a Good Joint with Electrofusion Fittings


Jointing, Sealing and Welding # 1985 York

Electrofusion is uncontestahly a reliable assembly technique with much higher performances than conventional techniques such as hurt or socket fusion.The studv of the parameters involved in electrofusion process has enabled Gaz de France to define rules for the design and implementation of electrofused joints. Preparation of the pipes (straight sections, coils or turrets) and the geometry of assemblies are the main parame- ters. Welding energv is a third parameter which, although of- fering a certain degree of flexibility, must he varied as a function of the assembly temperature prior to weldinp. 

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