Mpweya wa carbon welded mapaipi Amagawidwa m'njira zitatu: kuwotcherera kwamagetsi (RW), kuwotcherera kwa spiral submerged arc (SSAW) ndi kuwotcherera kwa msoko wowongoka (LSAW). Mapaipi a carbon steel welded opangidwa ndi njira zitatuzi ali ndi malo awoawo m'munda wofunsira chifukwa cha zida zawo zosiyanasiyana, njira zopangira, kukula kwake komanso mtundu.

1. Chitoliro chowongoleredwa cha msoko wowongoka wamagetsi (RW)

Electric kukana welded chitoliro ndi mtundu oyambirira a zitsulo chitoliro opangidwa m'dziko langa, ndi widest osiyanasiyana ntchito, chiwerengero chachikulu cha mayunitsi kupanga (kuposa 2,000), ndi linanena bungwe apamwamba (accounting pafupifupi 80% ya mphamvu okwana kupanga wa mipope welded). Zogulitsa ndi Ф20 ~ 610mm. adachita mbali yofunika. Kuyambira m'ma 1980, pafupifupi 30 seti ya ERW219-610mm mayunitsi atumizidwa kuchokera kunja. Pambuyo pazaka zambiri zopanga, luso laukadaulo la zida zapita patsogolo kwambiri, ndipo mtundu wazinthuwo ukukulanso nthawi zonse. Chifukwa cha ndalama zake zochepa, kuchitapo kanthu mwachangu komanso kusiyanasiyana kogwiritsa ntchito, zakula mwachangu. Ndi chitukuko cha mbale CSP kupanga ndondomeko, amapereka zotsika mtengo, zodalirika khalidwe zopangira, ndipo amalenga zinthu zabwino chitukuko zina m'tsogolo. Gawo ili la mankhwala lapangidwa kuchokera kumunda wa zoyendera madzimadzi ndi dongosolo kwa chitoliro mafuta bwino chitoliro ndi mzere chitoliro m'munda wa ntchito chitoliro mosalekeza.

2. Spiral submerged arc welded pipe (SSAW)

The zida ndalama ozungulira kumizidwa arc welded chitoliro ndi zochepa, chifukwa ntchito yotsika mtengo yopapatiza Mzere (mbale) koyilo koyilo mosalekeza kuwotcherera kutulutsa lalikulu m'mimba mwake (Ф1016 ~ 3200mm) welded chitoliro, kupanga ndondomeko yosavuta, mtengo ntchito ndi otsika, ndipo ali ndi ubwino wa ntchito yotsika mtengo. dziko langa mafuta ndi gasi kufala kozungulira welded chitoliro wapanga mtundu zofunika makamaka zochokera zitsulo chitoliro fakitale ogwirizana ndi dongosolo mafuta. Kutengera matekinoloje apamwamba monga kupanga kupsinjika kotsalira kotsalira ndi kukulitsa makina a chitoliro, mtundu wa chitoliro chowotcherera chozungulira chomwe chayendetsedwa bwino kwambiri ndi chitoliro chowongoka cha msoko. Ndilo mtundu waukulu wa mapaipi omwe amagwiritsidwa ntchito m'dziko langa lakutali la mafuta ndi gasi. Kupanga kwake kwatha kukwaniritsa zofunikira za ntchito yomanga mapaipi amafuta ndi gasi akutali m'dziko langa, ndipo zatumizidwa kunja kwa mayiko ambiri.

3. Msoko wowongoka pansi pa madzi arc welded chitoliro (LSAW)

Longitudinal submerged arc kuwotcherera ndiukadaulo wapamwamba wopanga mapaipi opangidwa mochedwa m'dziko langa, ndipo ukadaulo wa UOE unkagwiritsidwa ntchito kwambiri m'mbuyomu. M'zaka zaposachedwa, JCOE yopita patsogolo pang'onopang'ono yakhala ukadaulo wina watsopano m'dziko langa komanso padziko lonse lapansi. Mapaipi aarc welded otalikirapo ndi amtundu wodalirika ndipo amagwiritsidwa ntchito kwambiri pamizere yonyamula mafuta ndi gasi. Chifukwa cha ndalama zambiri za unit welded chitoliro ichi, zopangira ntchito ndi limodzi lonse ndi wandiweyani mbale ndi mtengo wokwera, ndondomeko zovuta, dzuwa kupanga ndi otsika, ndipo mtengo mankhwala ndi mkulu.