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 Address to refer: https://www.researchchannel.co.za/article/do-not-put-your-welds-at-risk-2016-01-26
 Article Headline: Do not put your Welds at Risk
 Abstract: For closure welds, tight bends, T piece joints and dome end connections where a conventional Tandem Weld Purging System cannot be used, a range of low cost, single ended Inflatable Weld Purge Dams is available from Huntingdon Fusion Techniques HFT®. Manufactured for pipe diameters from 6 to 96 inches (150 mm up to 2,440 mm) these lightweight systems are easy to inflate and are heat resistant up to 90oC (194oF). Ron Sewell, Chairman at Huntingdon Fusion Techniques HFT® said: “Even today, many companies are still allowing their technicians to spend many hours fabricating dams made of foam, cardboard, adhesive tape, wood and so on. Like paper, these materials contain a high percentage of water and water is very undesirable to have in the presence of a weld. As these poor quality materials are warmed by the welding operation, they start to outgas their water vapour, which starts to circulate around the weld joint and combine with the weld pool to cause porosity and oxidation.”
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