Thecombinationofananticorrosionlayerandcathodicprotectionisthemostcost-effectivecorrosioncontrolmeasure.Thepresenceofananticorrosionlayerreducestheneedforcathodicprotectioncurrent,andcathodicprotectionslowscorrosionatthepointwheretheanticorrosionlayerbreaksdown.Whenthecathodicprotectioncurrent...

Aluminumheatwelding    Grindtheweldingplaceonthesurfaceofthepipeandpressthecablecoreunderthemold; Themoldwillbefilledwithsolderingflux(copperoxideandaluminumpowdermixture),withtheignitiondevicetoignite; Theheatofthechemicalreactionwillmakethemeltedcoppercoverthecopperca...

 Afterthepipelineisburiedintheground,affectedbythenatureofthesoilalongthepipelineandenvironmentaldifferences,therearedifferencesinthepotentialofeachpointonthesurfaceofthepipeline.Thelocationofthemorenegativepotentialfortheanode,corrosion;potentialmorepositivepartsofthecathode,corrosioninhibitio...