Seyakakosha kupisa kwemafuta uye midziyo yekufambisa muinjiniya yepombi yemazuva ano, pombi dzesimbi dzakadzivirirwa dzinoshandiswa zvakanyanya mupetroleum, makemikari, uye maindasitiri ekudziya. Kuita kwavo kunokanganisa kuchengetedzeka kwehurongwa uye kugona kwesimba. Kuti ive nechokwadi chemhando yechigadzirwa uye kuvimbika kweprojekiti, kugadzirwa uye kugamuchirwa kwemapombi esimbi akaiswa insulated kunofanirwa kunyatso kuomerera kune akakodzera kuita zviyero.
Mitemo mikuru yekushandiswa kwepombi dzesimbi dzakaiswa insulated munyika mangu dzinosanganisira GB/T 29047-2012, "High-density polyethylene outer sheath pipe, polyurethane foam plastic prefabricated direct-buried insulated pombi" neCJ/T 114-Highdenness{1}201} outleness{1}201} sheath pombi, polyurethane furo plastiki prefabricated yakananga-yakavigwa insulated pombi uye fittings." Aya mazinga anopa akadzama zvirevo zvesimbi pombi zvinhu, insulation layer chimiro, ekunze sheath performance, uye yakazara tekinoroji zvinodiwa. Semuyenzaniso, pombi dzesimbi dzinowanzoita seamless kana spiral welded, uye zvinhu zvacho zvinofanirwa kuenderana neGB/T 8163 kana GB/T 9711 miyero kuti ive nechokwadi chekuremerwa kutakura uye kuramba ngura. Iyo insulation layer inowanzo gadzirwa neyakaomarara polyurethane foam, ine yakaderera yekupisa conductivity uye yakakwirira yekumanikidza simba. Ukobvu hwayo uye kuwanda kunofanira kusangana nemagadzirirwo zvinodiwa kuderedza kupisa kurasikirwa uye kudzivirira pombi yesimbi. Iyo yekunze sheath inowanzogadzirwa nepamusoro-density polyethylene (HDPE), iyo inopa yakanakisa mamiriro ekunze uye simba remagetsi. Miyero inotsanangura zvakajeka kupikisa kwayo kukanganisa uye kuramba kune kushushikana kwezvakatipoteredza kutsemuka.
Pamusoro pezvo, zviyero zvepasi rose zvakaita se ISO 23940:2019, "Prefabricated Insulated Piping Systems," inopa chirevo chezvigadzirwa zvekunze, zvichisimbisa kuenderana kwezvinhu uye-nguva refu yehupenyu hwesevhisi. Mumashandisirwo einjiniya, zviyero zvinofanirwa kusarudzwa zvichibva pane chaiwo mamiriro. Semuyenzaniso, masisitimu ekudziya emumadhorobha anogona kureva CJJ/T 81-2013, "Technical Specification for Directly Buried Hot Water Pipelines for Urban Heating," ukuwo indasitiri yepetrochemical inogona kutevedzera zvakanyanya API kana ASTM zviyero.
Kunyatsotevedzera mitemo yeindasitiri yepombi dzesimbi dzakaiswa insulated hakungovimbisi chete kushanda kwakasimba kwenguva refu-kwepombi, asiwo kunonatsiridza kushandiswa kwesimba uye kuderedza mari yekugadzirisa. Nekufambira mberi kwetekinoroji, zviyero zvichave zvichiwedzeredzwa, zvichifambisa kuvandudzwa kwepombi dzesimbi dzakasungirirwa kune kunyatsoshanda uye kushamwaridzana kwezvakatipoteredza.
