... : steel wire rod 2, OD:6-20mm 3, grade: 30MnSi, 20Mn2A, 1, commodity: steel wire rod2, size: Φ6.5-Φ20mm3, grade: 30MnSi, 20Mn2A, C82DA,C72DA ... , BS4449-1997, ASTMA615-96a, JIS G3112 SD3905, Application: construction,making wire,making nails,for ...