PE-RTII型(xing)(xing)管(guan)(guan)材(cai)全(quan)稱是(shi)(shi)PE-RTII型(xing)(xing)預(yu)制直(zhi)埋供熱(re)(re)(re)(re)管(guan)(guan)材(cai)，又稱PE-RTII型(xing)(xing)預(yu)制直(zhi)埋保(bao)溫(wen)管(guan)(guan)，PE-RTII型(xing)(xing)溫(wen)泉管(guan)(guan)亦或叫耐(nai)(nai)熱(re)(re)(re)(re)聚乙(yi)烯II型(xing)(xing)管(guan)(guan)材(cai)，是(shi)(shi)一種(zhong)100級高(gao)(gao)密(mi)度(du)耐(nai)(nai)熱(re)(re)(re)(re)聚乙(yi)烯管(guan)(guan)材(cai)，耐(nai)(nai)高(gao)(gao)溫(wen)性(xing)(xing)(xing)能好，管(guan)(guan)材(cai)的執(zhi)行標準(zhun)為(wei)GB/T28799.2-2012，是(shi)(shi)一種(zhong)聚烯烴族熱(re)(re)(re)(re)塑(su)(su)性(xing)(xing)(xing)塑(su)(su)料，它(ta)的密(mi)度(du)與其(qi)它(ta)熱(re)(re)(re)(re)塑(su)(su)性(xing)(xing)(xing)塑(su)(su)料如 PB、PE 或 PP 范(fan)圍相(xiang)同，是(shi)(shi)PE-RT經改性(xing)(xing)(xing)后(hou)形成的。原材(cai)料樹脂(zhi)采(cai)用(yong)法國道(dao)達爾（牌號XRT70）聚乙(yi)烯材(cai)料，由(you)乙(yi)烯單(dan)體與己烯單(dan)體共(gong)聚而(er)(er)成，專為(wei)高(gao)(gao)溫(wen)應用(yong)領域而(er)(er)開發(fa)，其(qi)獨特的分(fen)(fen)子支(zhi)鏈分(fen)(fen)布結構(gou)使PE-RTII型(xing)(xing)管(guan)(guan)道(dao)具有耐(nai)(nai)低溫(wen)脆(cui)性(xing)(xing)(xing)、耐(nai)(nai)腐蝕性(xing)(xing)(xing)、耐(nai)(nai)高(gao)(gao)溫(wen)性(xing)(xing)(xing)，是(shi)(shi)一種(zhong)極(ji)佳(jia)的冷熱(re)(re)(re)(re)水管(guan)(guan)材(cai)，使用(yong)壽(shou)命(ming)長(chang)（可達50年以上(shang)）且(qie)免后(hou)期維護(hu)、安裝方便等優勢。