660 storeds, e le o manifinifi i le tui faʻapitoa, ae ono laʻititi teisi maneta e ala i le mauaina. E ui lava e tutusa le malosi maualuga ma le afaina o isi steels, astm A453 gr. 660 hex ulu bol e maua ai le toega a latou telō ona o latou maualalo carbon anotusi. ASTM A453 Vasega 660 Studs e talafeagai mo talosaga vevela. O lenei vasega o fusi faʻamau o loʻo vaevaeina i totonu o le, b, i, i, D vasega. Mea o Carloon, Manegane, Phosphorus, Slfur, Secfur, Orakel, Chromium, Kiming, Baiday. ASTM A453 Vasega 660 Bolts maua ai lo latou malosi ma le lamatia o le tetee mai le tuʻufaʻatasiga o mea.