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  1. Bigfaz

    Does a 600# flange need to be tested?

    New 24" natural gas pipeline in WV, USA. Inspection had me remove all 600# flanges and weld temporary test heads on prior to hydro of a section of pipeline. Design pressure is 1480psi, material is X65. Hydro pressure was 2400psi due to elevation difference. Inspection said the flanges are...

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