采用優質(zhi)冷(leng)軋輕鋼(gang),經(jing)專用設備成型(xing),鍍鋅保護,定長4M,有(you)φ16-40mm五種規格,特點(dian)是加工(gong)精度高(gao),兩(liang)端(duan)內(nei)外倒(dao)角圓(yuan)滑無毛刺、重(zhong)量輕、搬運方便