Kumaphrojekthi esisekelo senqwaba kanye nokwakhiwa kwesisekelo esijulile, ukukhethwa kosayizi wamapayipi ensimbi kuthinta ngqo amandla okuthwala isakhiwo kanye nokuphepha kobunjiniyela. Ubukhulu Bepayipi le-ASTM A252 (izinga le-ASTM A252 lamapayipi ensimbi) linikeza onjiniyela iziqondiso ezicacile zemininingwane, okuqinisekisa ukuthi ukukhetha kusekelwe ebufakazini obuqinile nokuthi ikhwalithi ingalawulwa. Lesi sihloko sizokusiza ukuqonda ububanzi bemininingwane ejwayelekile futhi uhlole ukuthi ungalawula kanjani ikhwalithi yomkhiqizo kusuka emthonjeni.
Imininingwane ejwayelekile yeIzinqwaba zamapayipi ensimbi e-ASTM A252
Izinga le-ASTM A252 lihlanganisa izinqwaba zamapayipi ensimbi yekhabhoni asetshenziswa kumaphrojekthi esisekelo sezinqwaba, ahlukaniswe ngezinhlobo ezimbili: amapayipi ensimbi angenamthungo kanye nokwakhiwa okuhlanganisiwe. Ububanzi bemininingwane ejwayelekile buvame ukufaka:
Ububanzi obujwayelekile: busukela kumasentimitha angu-6 (168.3mm) kuya kumasentimitha angu-60 (1524mm), buhlanganisa izidingo zezisekelo ezincane neziphakathi kanye nezinkulu zezinqwaba.
Uchungechunge lobukhulu bodonga: Lunikeza imininingwane ehlukahlukene kufaka phakathi ubukhulu bodonga obujwayelekile (STD), udonga oluqine kakhulu (XS), kanye nodonga oluphindwe kabili oluqine kakhulu (XXS)
Ukwenza ngokwezifiso ubude: Ubude obujwayelekile obubodwa busukela kumamitha ayi-6 kuya kwayi-12. Ubude obungokwezifiso bunganikezwa futhi ngokwezidingo zobunjiniyela.
Umklamo ojwayelekile waleziUsayizi Wepayipi le-Astm A252kwenza onjiniyela bakwazi ukukhetha ngokunembile uhlobo olufanele ngokusekelwe ezimweni ze-geological kanye nezidingo zomthwalo, ngenkathi bethuthukisa izindleko zezinto zokwakha ngenkathi beqinisekisa ukuphepha.
Inqubo yokukhiqiza yokufaka amapayipi nezidingo zezinto zokwakha
Izinga le-ASTM A252 libeka imithetho eqinile yezinto ezisetshenziswa ekufakweni kwamapayipi. Ukufakwa kwamapayipi kungenziwa ngezingxenye ezibunjiwe, imigoqo, amapuleti, noma imikhiqizo yeshubhu ehlanganisiwe nehlanganisiwe (amapayipi ahlanganisiwe), kodwa izinto kumele zibe yinsimbi ebulewe ukuqinisekisa ukuqina kwesakhiwo. Inqubo yokwakha ingakhethwa kusukela ekufakweni kwesando, ukunyathela, ukukhipha, ukudweba okubandayo, ukugoqa, ukugoba, ukushisela, imishini, nezinye izindlela, noma inhlanganisela yazo.
Indinganiso igcizelela kakhulu ukuthi inqubo yokwakha akumele ibangele noma yiziphi iziphambeko eziyingozi kumkhiqizo. Kumapayipi afakwe emazingeni okushisa aphezulu, izinga lokupholisa kumele lilawulwe ngokuqinile - kufanele apholiswe libe ngaphansi kwezinga lokushisa elibucayi ngaphansi kwezimo ezifanele, futhi izinga lokupholisa akumele libe ngokushesha kunezinga lokupholisa lemvelo emoyeni othule ukuvimbela ukulimala kwezicubu okubangelwa ukupholisa okusheshayo.
Ukuhlolwa Okuqinile: Ukuqinisekiswa Kwekhwalithi Kusukela Embonini Kuya Endaweni Yokwakha
OkuthembekileAmafektri e-ASTM A252kumele ifakwe uhlelo lokuhlola oluphelele. Izindinganiso zithi inqwaba ngayinye yezingxenye zamapayipi kufanele idlule:
Ukuhlolwa kokuthamba: Ukuqinisekisa amandla okukhiqiza, amandla okuthamba kanye nokwandiswa kwezinto
Ukuhlolwa kokuqina: Qinisekisa ukuthi ubulukhuni bezinto bungaphakathi kwebanga elivumelekile ukuze ugweme ukuphuka okubuthakathaka ngenxa yobunzima obukhulu.
Ukuhlolwa kwe-Hydrostatic: Faka ingcindezi ecacisiwe kuma-fittings amapayipi ukuqinisekisa amandla azo okuthwala ingcindezi kanye nokuqina kwama-welds.
Ukukhetha ama-Astm A252 Factories anolwazi akusho nje ukuthola imikhiqizo ehlangabezana nezindinganiso zosayizi, kodwa futhi nokuthola ukuzibophezela kwekhwalithi okuye kwahlolwa kaningi. Amafektri avamile anganikeza imibiko ephelele yokuhlola kanye namadokhumenti okulandelela ikhwalithi, okuhlinzeka ngesisekelo esiqinile sokuphepha nokuthembeka kwamaphrojekthi esisekelo senqwaba.
Isikhathi sokuthunyelwe: Mashi-13-2026