Ipayipi elishiselwe ngobude elinobubanzi obukhulu liyitemu elivamile. Ikhiqizwa ngomucu wensimbi. Amapayipi ashiselwe ngemishini yokushisela ama-high-frequency welding abizwa ngokuthi amapayipi ashiselwe ngobude. (Igama linikezwa ngenxa yokuthi amashisela epayipi lensimbi asemgqeni oqondile). Phakathi kwazo, ngokwezinjongo ezahlukene, kunezinqubo ezahlukene zokukhiqiza ezingemuva. (Ihlukaniswe cishe ngepayipi lesikafula, ipayipi eliwuketshezi, i-wire casing, ipayipi lobakaki, ipayipi le-guardrail, njll.)

Ngokuvamile,amapayipi ensimbi aqondileenobubanzi obungaphezu kuka-325 abizwa ngokuthi amapayipi ensimbi anobubanzi obukhulu. Inqubo yokushisela yepayipi yensimbi enobubanzi obukhulu obugqize ngodonga longitudinal iwubuchwepheshe bokushisela be-arc obungaphansi kwamanzi obuphindwe kabili, futhi ukushisela okwenziwa ngesandla nakho kungenziwa ngemuva kokwakhiwa kwepayipi lensimbi. Indlela yokuhlola evamile ukutholwa kwamaphutha. Ngemuva kokuthi ukutholwa kwephutha sekufanelekile, kungalethwa. Imikhiqizo esezingeni eliphansi idinga ukushiselwa futhi. Amapayipi ensimbi anogqinsi anobubanzi obukhulu anodonga oluqondile ngokuvamile afanele ukuthuthwa koketshezi, ukusekelwa kwezakhiwo zensimbi, nokunqwabelanisa. Zisetshenziswa kabanzi ku-petrochemical, ukwakhiwa, ubunjiniyela bamanzi, imboni yamandla, ukuchelela ngenkasa kwezolimo, ukwakhiwa kwamadolobha, njll. Ipayipi lensimbi kufanele likwazi ukumelana nokucindezela kwangaphakathi, futhi yenze ukuhlolwa kwengcindezi ye-2.5Mpa, futhi igcine ngaphandle kokuvuza umzuzu owodwa. Indlela yokuthola iphutha lamanje le-eddy ivunyelwe ukuthi ithathele indawo yokuhlolwa kwe-hydraulic. Izindlela zokubumba ikakhulukazi zifaka i-UOE, i-RBE, i-JCOE, njll., phakathi kwayo i-JCOE enezinga eliphezulu lokusetshenziswa. Ukuphela kwepayipi kungabuye kuhlanganiswe ngokuvumelana nezidingo zamakhasimende, okubizwa nangokuthi i-threaded and unthreaded.

Inqubo yokukhiqiza yepayipi elikhulu lensimbi eliqondile lomthungo:

Inqubo yokukhiqiza yamapayipi ensimbi anomugqa omkhulu oqondile wobubanzi ngokuvamile ihlanganisa izindlela zokukhiqiza ezifana nokuginqika okushisayo, ukugoqa okushisayo, nokusakazwa. Amapayipi ensimbi anobubanzi obukhulu anodonga oluqinile ngokuvamile asebenzisa izinqubo zokukhiqiza zokushisela ezingaphansi kwe-arc ezinezinhlangothi ezimbili. Imikhiqizo iyagotshwa, ishiselwe, ishiselwe ngaphakathi, futhi icutshungulwa ngaphandle. Ukushisela, ukuqondisa, isihloko esiyisicaba, nezinye izinqubo zihlangabezana nezidingo zamazinga e-petrochemical.

Ukusetshenziswa kwamapayipi ensimbi omthungo oqondile anobubanzi obukhulu kusetshenziswa kakhulu izingxenye ezisekela umzimba, njengokunqwabelanisa ibhuloho, ukunqwabelanisa ulwandle olungaphansi kolwandle, nokunqwabelanisa izakhiwo eziphakeme.

Izinto ezisetshenziselwa amapayipi ensimbi omthungo oqondile anobubanzi obukhulu ngokuvamile ama-Q345B kanye ne-Q345C. I-Q345D isetshenziswa nasezindaweni ezinamazinga okushisa aphansi. I-Q345E amapayipi ensimbi anobubanzi obukhulu obuqondile asetshenziswa kakhulu ekwakhiweni kwesakhiwo sensimbi esikhulu.