國家現行標準CJJ／T 28《城鎮供(gong)熱管(guan)(guan)網工(gong)程(cheng)施工(gong)及驗(yan)收(shou)規范》適用于采(cai)用明挖(wa)、暗挖(wa)、頂管(guan)(guan)、定向鉆等施工(gong)工(gong)藝，并符合下列參數的城鎮供(gong)熱管(guan)(guan)網工(gong)程(cheng)的施工(gong)及驗(yan)收(shou)：
工(gong)作壓(ya)力小(xiao)于(yu)或等(deng)于(yu)1.6MPa，介(jie)質溫度(du)小(xiao)于(yu)或等(deng)于(yu)350℃的(de)蒸汽管(guan)網；工(gong)作壓(ya)力小(xiao)于(yu)或等(deng)于(yu)2.5MPa，介(jie)質溫度(du)小(xiao)于(yu)或等(deng)于(yu)200℃的(de)熱水管(guan)網。
