Low cost pipe weld purging
When welding pipes and tubes that need to go through high temperature thermal cycles before, during and after welding, it is usually important to purge the insides with an inert gas, to prevent oxidation and scaling and to ensure a good internal weld profile.
For situations where there is sufficient length in the tube or pipe structure being welded for the inflatable dams can be kept outside of the heated areas, Huntingdon Fusion Techniques has developed a variety of Weld Purging Systems.
Special high temperature resistant gas hose material ensures that the purge dams stay inflated, firmly sealing the purged void to protect the weld throughout the whole thermal and welding cycles.
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