A.冷拔低碳鋼絲B.CRB600HC.HRB400熱軋鋼筋D.熱處理鋼筋E.鋼絞線
A.CRB600HB.預(yù)應(yīng)力混凝土鋼絞線C.冷拔低碳鋼絲D.冷軋帶肋鋼筋
A.CRB650B.CRB550C.CRB800D.CRB800H