Butt Fusion Joining Procedure and Qualification Guide ...

Technical Service Bulletin 1 1. INTRODUCTION The procedures outlined in this document are qualified for use with Uponor Infra s Sclairpipe and Wehogas product lines. 2. SCOPE This document outlines the procedures for Joining polyethylene pipe & fittings by butt Fusion . Materials that have been pre-qualified to be joined by this Fusion Procedure are within the nominal melt index range of to gm/10 minutes (190 C/ Kg), or a high load melt flow of 6 to 17 gm/10 minutes (190 Kg), and a nominal density range of to g/cc. 3. OVERVIEW In butt Fusion Joining , mating surfaces are prepared, mating faces are melted with a hot-plate heater, the heater is removed, and the melted surfaces are pressed together and held under pressure.

shock or a spark that can ignite a flammable gas or combustible dust atmosphere causing fire or explosion. • In gas utility applications, static electricity can be a potential safety hazard. Where a flammable gas-air mixture may be encountered and static charges may be present, such as when repairing a leak, squeezing

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  Safety, Dust, Combustible, Combustible dust

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