采用(yong)優質冷軋輕鋼(gang),經專(zhuan)用(yong)設(she)備成型,鍍(du)鋅(xin)保護,定長4M,有φ16-40mm五種(zhong)規格(ge),特(te)點(dian)是加工精度(du)高,兩(liang)端內外倒角(jiao)圓滑無毛刺、重量輕、搬運方便(bian)