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  • Users: masao777
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  1. masao777

    Installing Weldolets on an Existing Pipeline

    I will install two weldolets 2" on a 20" existing gas pipeline for temperature and pressure devices using a hot-tap process. I know for sure that the nipple plus one flange need be hydrotested with 1.25 MAOP of the pipeline and not 1.25 MOP of the pipeline, or RX will be enough in the weld...

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