E tatau i tagata gaosi oloa ona tausisia le vailaʻau faʻaaogaina e gaosia ai le ASTM A182 F11 Vasega 2 tutusa. Alloy Steel Su'esu'ega fa'afefiloi 'ese'ese fa'aaogaina i flanges ASTM A182 F11 RTJ, e pei o le phosphorus, silicon, nickel, carbon, manganese, chromium, molybdenum, niobium, titanium, fa'aleleia le fa'atinoina o galuega.