天津(jin)直(zhi)埋保(bao)溫(wen)(wen)管(guan)(guan)供(gong)應結構(gou): (1)直(zhi)埋管(guan)(guan)工作鋼(gang)(gang)(gang)管(guan)(guan):根據(ju)輸送介質的技術要求(qiu)分別采(cai)(cai)用(yong)有(you)縫鋼(gang)(gang)(gang)管(guan)(guan)、無縫鋼(gang)(gang)(gang)管(guan)(guan)、雙(shuang)面埋弧螺旋焊接鋼(gang)(gang)(gang)管(guan)(guan)。 (2)直(zhi)埋保(bao)溫(wen)(wen)管(guan)(guan)保(bao)溫(wen)(wen)層:采(cai)(cai)用(yong)硬(ying)質聚(ju)氨(an)(an)酯(zhi)泡沫塑料。 (3)聚(ju)氨(an)(an)酯(zhi)保(bao)溫(wen)(wen)管(guan)(guan)保(bao)護殼:采(cai)(cai)用(yong)高密度聚(ju)乙(yi)烯或(huo)玻璃鋼(gang)(gang)(gang)。 (4)直(zhi)埋管(guan)(guan)滲(shen)漏(lou)報(bao)警(jing)(jing)線(xian):制造高溫(wen)(wen)預制直(zhi)埋保(bao)溫(wen)(wen)管(guan)(guan)時,在靠(kao)近(jin)鋼(gang)(gang)(gang)管(guan)(guan)的保(bao)溫(wen)(wen)層中,埋設有(you)報(bao)警(jing)(jing)線(xian)