铁道(dao)棒形瓷(ci)绝(jue)缘子(zi)用(yong)(yong)于标称电压25kV、工频单相交流电气(qi)化铁道(dao)接(jie)触网(wang)(wang)，用(yong)(yong)作(zuo)接(jie)触网(wang)(wang)的对地绝(jue)缘及导线支撑(cheng)。执行铁道(dao)部(bu)准TB/T3199.1-2008《电气(qi)化铁路接(jie)触网(wang)(wang)用(yong)(yong)绝(jue)缘子(zi)第(di)1部(bu)分：棒形瓷(ci)绝(jue)缘子(zi)》进(jin)行图样(yang)设(she)计和(he)产(chan)品试验。Q12S-290/1400及Q12D-290/1400铁道(dao)棒形瓷(ci)绝(jue)缘子(zi)于2009年(nian)5月26日(ri)被评(ping)为(wei)“重庆(qing)市(shi)重点新(xin)产(chan)品”。并成功在云南、新(xin)疆等地铁路系统(tong)投入使(shi)用(yong)(yong)，得(de)到用(yong)(yong)户(hu)一(yi)致好评(ping)。