VAD o le faʻapuupuuga o le vacuum arc degassing, VAD auala e faʻapipiʻiina e le kamupani Finkl ma le kamupani Mohr, o lea e taʻua ai foi o le Finkl-Mohr metotia poʻo le Finkl-VAD metotia. O le ogaumu a le VAD e masani ona faʻaaogaina e faʻaogaina ai le carbon steel, meafaigaluega uamea, uʻu uʻamea, maualuga ductility sila ma isi. VAD fa'amamaina e...
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