铁(tie)(tie)道棒形瓷(ci)绝(jue)(jue)缘子用(yong)于(yu)标称电(dian)压25kV、工(gong)频单相交流电(dian)气(qi)化铁(tie)(tie)道接触网，用(yong)作接触网的对(dui)地(di)绝(jue)(jue)缘及导(dao)线支撑。执行(xing)(xing)铁(tie)(tie)道部准TB/T3199.1-2008《电(dian)气(qi)化铁(tie)(tie)路接触网用(yong)绝(jue)(jue)缘子第1部分：棒形瓷(ci)绝(jue)(jue)缘子》进(jin)行(xing)(xing)图(tu)样设计和产品试验。Q12S-290/1400及Q12D-290/1400铁(tie)(tie)道棒形瓷(ci)绝(jue)(jue)缘子于(yu)2009年5月26日(ri)被评为“重(zhong)庆市重(zhong)点新(xin)产品”。并(bing)成功在(zai)云(yun)南、新(xin)疆等地(di)铁(tie)(tie)路系(xi)统(tong)投入使(shi)用(yong)，得到(dao)用(yong)户一致好(hao)评。