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Title: Performance And Qualification Of Fusion Joining Methods
Author: m. J. Cassady
Source: American Gas Association 1980
Year Published: 1980
Abstract: The assembly of polyethylene joints in the field by fusion processes is widely practiced by the gas industry in the construction of fuel gas distribution networks. The ability to reliably and economically prepare large numbers of joints by this approach is one reason for the great success enjoyed by polyethylene in this demanding apphcation. One attractive feature of the fusion joining process is that it lends itself to almost any reasonable geometry and can be used for almost any pipe size. The operating conditions for Ihe fusion process vary considerably for the different polyethylene compounds used by the gas distribution companies because there is a wide variation in composition, molecular weight, molecular weight distribution, and degree of crystallinity among these materials. For these reasons optimum fusion parameters vary for different compounds.