鐵(tie)(tie)道棒(bang)形瓷絕緣(yuan)(yuan)子用(yong)(yong)(yong)于標(biao)稱電(dian)壓25kV、工頻單相交流電(dian)氣(qi)(qi)化(hua)鐵(tie)(tie)道接(jie)觸(chu)網，用(yong)(yong)(yong)作接(jie)觸(chu)網的對(dui)地絕緣(yuan)(yuan)及導線支撐。執行(xing)鐵(tie)(tie)道部(bu)準TB/T3199.1-2008《電(dian)氣(qi)(qi)化(hua)鐵(tie)(tie)路接(jie)觸(chu)網用(yong)(yong)(yong)絕緣(yuan)(yuan)子第1部(bu)分：棒(bang)形瓷絕緣(yuan)(yuan)子》進行(xing)圖樣(yang)設(she)計(ji)和產品試驗。Q12S-290/1400及Q12D-290/1400鐵(tie)(tie)道棒(bang)形瓷絕緣(yuan)(yuan)子于2009年5月26日被評(ping)為(wei)“重(zhong)慶市重(zhong)點(dian)新產品”。并成功(gong)在云南、新疆等(deng)地鐵(tie)(tie)路系(xi)統(tong)投(tou)入使(shi)用(yong)(yong)(yong)，得到用(yong)(yong)(yong)戶(hu)一致(zhi)好評(ping)。