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Title: What's in the pipeline? Advantages of internal bead removal in butt welded polyethylene pipes
Category: Pipeline Industries Guild technical library
Downloadable: Yes 
Catalog No.: PIG0034
Date of Publication: April 6, 1989
Price: $25.00 US
Authors: E Campbell
Abstract: Reference is made throughout this paper to British Gas who have done a great deal of research on thermoplastic pipes. The scale of British Gas involvement with polyethylene pipes is indicated by the following statistics:

-Within the low pressure system there are about 450000 Klm of mains and services. -To build up the system they have estimated that 4 million fusion welded joints need to be made each year.

These joints are usually made in conditions which are often cold, dirty and not ideal for fusion welding. British Gas soon realised that the ultimate quality of the system rested with the field teams who carried out the welding and they tried to ensure, by every means available, the integrity of each and every butt fused joint.

This paper sets out to show one method of achieving the quality assurance demanded, and with it a very useful side effect.

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