ASTM A193 Vasega B7 o le faʻavae lea o mea faʻapitoa mo chromium-molybdeam peimen steels veters mo le maualuga-malosi, ma faʻapitoa-faʻamoemoe mo le malosi-faʻamoemoe Vasega B7 o se vevela vevela chromium molybdenatum anlon steel ma le itiiti ifo i le itiiti ifo i le 7 ksi, o le gasologa malosi o le 35 hsc. O le ASTM A193 faʻamatalaga manaʻomia mo vailaʻau tuʻufaʻatasi, nofoaga faigata, vevela, vevela togafitiga, ma le faʻaaogaina o manu i le vasega B7 faʻapipiʻi. ASTM A193 Vasega B7 o le lautele faʻataʻitaʻiga mo fusi, masani ona maua i bolts poʻo paipa, o alatoto, o alatoto, o alatoto, vaseina ma matata ma matatifi ma matata ma matata ma matata ma matatii.