Kumaphrojekthi esisekelo sezinqwaba, ikhwalithi yezinqwaba zamapayipi ensimbi inquma ngqo ukuqina nokuqina kwesisekelo sesakhiwo. Ukukhetha isisekelo esithembekileIfektri ye-ASTM A252isinyathelo sokuqala esibalulekile sokuqinisekisa ukuphepha kwephrojekthi. Lesi sihloko sizokusiza uqonde amaphuzu ayinhloko e-ASTM A252 standard kanye nendlela yokuhlola abahlinzeki bekhwalithi ephezulu.
Ukuhunyushwa kwe-ASTM A252 Standard
I-ASTM A252 iyincazelo ejwayelekile "yezinqwaba zamapayipi ensimbi ashiselwe futhi angenamthungo" ezakhiwe yi-American Society for Testing and Materials. Le nqubo iyasebenza ku-circularizinqwaba zamapayipi ensimbienobukhulu bodonga obujwayelekile, futhi ukusetshenziswa kwayo kuhlukaniswe izigaba ezimbili:
Izingxenye zokuthwala ezihlala njalo: Amapayipi ensimbi asebenza njengesakhiwo esihlala njalo esithwala imithwalo, esithwala ngqo imithwalo yesakhiwo.
Igobolondo lokuthulula ukhonkolo: Ipayipi lensimbi lisebenza njengegobolondo, bese kuthi ukhonkolo uthululwe ngaphakathi ukuze wakhe inqwaba efakwe endaweni.
Izinga lihlanganisa amazinga amathathu okuqina: Ibanga 1, Ibanga 2, kanye neBanga 3. Phakathi kwawo, i-A252 GRADE 1 Steel Pipe inokushintshwa okuhle kakhulu futhi iyonga kakhulu, futhi ifanelekela amaphrojekthi esisekelo senqwaba esilula kuya kwesiphakathi.
Izinto ezibalulekile okufanele uzicabangele ngobukhulu bezinqwaba zamapayipi ensimbi
Ukukhethwa kweUsayizi Wepayipi we-ASTM A252kuthinta ngqo ukusebenza kahle kokwakhiwa kanye nomthamo wokuthwala umthwalo. Amapharamitha ayinhloko afaka:
Ububanzi bobubanzi: Ngokwezimo ze-geological kanye nezidingo zomthwalo, ingenziwa ngokwezifiso kusukela kobubanzi obuncane kuya kobubanzi obukhulu kakhulu.
Izinga lokujiya kodonga: Ukujiya kodonga okujwayelekile kunquma amandla okucindezela kanye nokuguquguquka.
Ubude bepayipi elilodwa: Kunciphisa amalunga okushisela endaweni futhi kuthuthukisa ukusebenza kahle kokwakha
Amapayipi enqwaba ahlanganisiwe ahlinzekwa yiCangzhou Spiral Steel Pipe Group Co., Ltd. anobubanzi obusukela ku-219mm kuya ku-3500mm, futhi inqwaba ngayinye ingaba amamitha angu-35 ubude, okuhlangabezana nesidingo samanqwaba amade kubunjiniyela besisekelo esijulile.
Indlela yokuhlola ifektri ye-ASTM A252 esezingeni eliphezulu
Uma ukhetha ifektri ye-ASTM A252, kunconywa ukuthi kucatshangelwe izici ezilandelayo:
Iziqu zokukhiqiza kanye namandla okukhiqiza
I-Cangzhou Spiral Steel Pipe Group yasungulwa ngo-1993 futhi ingumkhiqizi ohamba phambili wamapayipi ensimbi ajikelezayo kanye nopende wamapayipi eShayina. Le fektri itholakala eDolobheni laseCangzhou, eSifundazweni saseHebei, ihlanganisa indawo engamamitha-skwele angu-350,000, enempahla eyizigidi ezingama-yuan ezingu-680. Ikhiqiza amathani angu-400,000 amapayipi ensimbi ajikelezayo minyaka yonke futhi inenani lomkhiqizo waminyaka yonke elingama-yuan ayizigidi eziyizinkulungwane ezingu-1.8. Amandla okukhiqiza azinzile aqinisekisa ukulethwa ngesikhathi kwama-oda amakhulu.
2. Uhlelo Lokulawula Ikhwalithi
Landela ngokuqinile indinganiso ye-ASTM A252. Sebenzisa ukulawula okuphelele kuyo yonke inqubo kusukela ekuthengweni kwensimbi kuya ekuhlolweni kokushisela ukuqinisekisa izakhiwo zemishini kanye nokunemba kobukhulu bezinto zamapayipi.
3. Amandla okumboza okulwa nokugqwala
Amaphrojekthi ezisekelo zenqwaba avame ukuchayeka ezindaweni ezimanzi noma ezigqwalisayo. Insizakalo yokumboza enikezwa yifektri yezinto zamapayipi inganikeza izixazululo zokulwa nokugqwala njenge-epoxy ne-PE, ngaleyo ndlela yandise impilo yesevisi.
4. Izinzuzo zokuhamba ngezokuthutha
I-Cangzhou iseduze ne-Tianjin Port. Isebenzisa ichweba elikhulu kunawo wonke enyakatho, ingafeza ukuthutha okuhlangene okuphumelelayo olwandle, ngaleyo ndlela inciphise izindleko zokuhamba kwamanye amazwe.
Isiphetho
Uma ukhetha ifektri ethembekile ye-ASTM A252, kubalulekile ukuhlola ngokuphelele amazinga ayo okukhiqiza, ukumbozwa kwemininingwane, amandla okukhiqiza kanye namakhono okuhambisa impahla. Njengoba inesipiliyoni sokukhiqiza esicishe sibe yiminyaka engama-30 kanye nenzuzo ephelele yochungechunge lwezimboni, i-Cangzhou Spiral Steel Pipe Group izibophezele ekuhlinzekeni ngezixazululo zephayiphi yensimbi esezingeni eliphezulu yamaphrojekthi esisekelo sephayiphi yomhlaba wonke.
Sicela uzizwe ukhululekile ukuxhumana nathi ukuze uthole iziphakamiso zokukhetha kanye nezingcaphuno ezenziwe ngokwezifiso zamasayizi epayipi e-ASTM A252.
Isikhathi sokuthunyelwe: Mashi-18-2026