铁(tie)(tie)道(dao)(dao)棒形(xing)瓷(ci)(ci)绝(jue)缘(yuan)子用(yong)(yong)于标称电(dian)(dian)压(ya)25kV、工(gong)频单相交流电(dian)(dian)气化铁(tie)(tie)道(dao)(dao)接触(chu)网，用(yong)(yong)作接触(chu)网的对地绝(jue)缘(yuan)及导线(xian)支撑。执(zhi)行(xing)铁(tie)(tie)道(dao)(dao)部准TB/T3199.1-2008《电(dian)(dian)气化铁(tie)(tie)路接触(chu)网用(yong)(yong)绝(jue)缘(yuan)子第1部分：棒形(xing)瓷(ci)(ci)绝(jue)缘(yuan)子》进行(xing)图样设计和产品(pin)试验(yan)。Q12S-290/1400及Q12D-290/1400铁(tie)(tie)道(dao)(dao)棒形(xing)瓷(ci)(ci)绝(jue)缘(yuan)子于2009年5月26日(ri)被评(ping)为(wei)“重庆市重点新(xin)产品(pin)”。并成(cheng)功在(zai)云南、新(xin)疆等(deng)地铁(tie)(tie)路系统投入使用(yong)(yong)，得到(dao)用(yong)(yong)户一致(zhi)好评(ping)。