鐵道(dao)(dao)棒形瓷絕緣(yuan)(yuan)(yuan)子用(yong)(yong)于(yu)標稱電(dian)(dian)壓25kV、工頻單相交流電(dian)(dian)氣化(hua)鐵道(dao)(dao)接觸網(wang)，用(yong)(yong)作(zuo)接觸網(wang)的對地絕緣(yuan)(yuan)(yuan)及(ji)(ji)導線支撐。執(zhi)行(xing)鐵道(dao)(dao)部準(zhun)TB/T3199.1-2008《電(dian)(dian)氣化(hua)鐵路(lu)接觸網(wang)用(yong)(yong)絕緣(yuan)(yuan)(yuan)子第1部分：棒形瓷絕緣(yuan)(yuan)(yuan)子》進行(xing)圖樣設計和(he)產品試驗。Q12S-290/1400及(ji)(ji)Q12D-290/1400鐵道(dao)(dao)棒形瓷絕緣(yuan)(yuan)(yuan)子于(yu)2009年(nian)5月26日被(bei)評為(wei)“重(zhong)慶市重(zhong)點新產品”。并成功在云南、新疆(jiang)等(deng)地鐵路(lu)系(xi)統(tong)投入使用(yong)(yong)，得到用(yong)(yong)戶一致好評。