國家現行(xing)標準CJJ／T 28《城(cheng)鎮(zhen)供(gong)熱管(guan)(guan)網(wang)工(gong)(gong)程施(shi)工(gong)(gong)及(ji)驗收(shou)規范》適用(yong)(yong)于(yu)采用(yong)(yong)明挖、暗挖、頂管(guan)(guan)、定向(xiang)鉆(zhan)等施(shi)工(gong)(gong)工(gong)(gong)藝，并符合下列參(can)數的城(cheng)鎮(zhen)供(gong)熱管(guan)(guan)網(wang)工(gong)(gong)程的施(shi)工(gong)(gong)及(ji)驗收(shou)：

  工(gong)作(zuo)壓力小于(yu)或(huo)等(deng)于(yu)1.6MPa，介(jie)質溫度(du)小于(yu)或(huo)等(deng)于(yu)350℃的蒸(zheng)汽管(guan)網；工(gong)作(zuo)壓力小于(yu)或(huo)等(deng)于(yu)2.5MPa，介(jie)質溫度(du)小于(yu)或(huo)等(deng)于(yu)200℃的熱水管(guan)網。