Emkhakheni wamapayipi ensimbi yekhabhoni, i-ASTM A500 Grade C kanyeI-ASTM A106 Ibanga Cyizindinganiso ezimbili zezinto ezivame ukubhekiselwa kuzo. Nakuba zombili ziyizinsimbi zekhabhoni futhi zabelana ngesimo esithi “Ibanga C”, zihlukile kakhulu kwifilosofi yokuklama, izinqubo zokukhiqiza, kanye nezimo zokusetshenziswa. Lesi sihloko sinikeza ukuqhathanisa okuningiliziwe kusuka kubukhulu obuningi, kufaka phakathi izincazelo ezijwayelekile, ukwakheka kwamakhemikhali, izakhiwo zemishini, imininingwane yobukhulu, kanye nezindawo ezisebenzayo.

1. Incazelo Ejwayelekile kanye Nezicelo Eziyinhloko

I-ASTM A500 - isihloko esigcweleUkucaciswa Okujwayelekile Kwepayipi Lesakhiwo Lensimbi Yekhabhoni Ebunjiwe Ebunjiwe Futhi Engenamthungo Ezindilinga Nakuma-shapesNjengoba igama lisikisela, lokhu kuyindinganiso yepayipi yesakhiwo, esebenza kumapayipi esakhiwo enziwe ngensimbi yekhabhoni ahlanganisiwe futhi angenamthungo ayindilinga, ayisikwele, angunxande, futhi anomumo okhethekile. Isetshenziswa kakhulu ekwakheni ozimele, amabhuloho, nezinye izakhiwo zokuxhuma okuhlanganisiwe, okunama-rivets, noma okunama-bolt. I-ASTM A500 ihlanganisa amamaki A, B, C, kanye no-D, kanti i-Grade C iyimaki yamandla aphezulu kakhulu esetshenziswa kakhulu.

I-ASTM A106 - isihloko esigcweleImininingwane Ejwayelekile Yepayipi Lensimbi Yekhabhoni Engenamthungo Yesevisi Yokushisa Okuphezulu. Lena indinganiso yepayipi yokucindezela lokushisa eliphezulu, esebenza kuphela kumapayipi ensimbi yekhabhoni angenamthungo, aklanyelwe ngqo ukuthutha umusi, uketshezi, kanye nezinye izinto ngaphansi kwezimo zokushisa okuphezulu kanye nokucindezela okuphezulu. I-ASTM A106 ihlanganisa amamaki A, B, kanye no-C, kanti iBanga C liyimaki enamandla aphezulu.

Umehluko oyinhloko womusho owodwa: I-A500 Ibanga C iyipayipi lesakhiwo elithwala umthwalo; I-A106 Ibanga C iyipayipi lokucindezela lokuhambisa uketshezi.

2. Inqubo Yokukhiqiza kanye Namafomu Omkhiqizo

Lezi zindinganiso ezimbili zihluke kakhulu endleleni yokukhiqiza kanye nezimo ezitholakalayo:

Ikhono le-A500 lokumboza izingxenye eziyisikwele, eziyisikwele, nezinye ezingezona eziyindilinga liwukubonakaliswa okuqondile kobubanzi bayo – “ezindilinga nasezimeni” – i-A106 engenayo.

3. Ububanzi Bobukhulu

I-ASTM A500 Ibanga C: Isebenza kumapayipi anomphetho ongadluli ku-2235 mm (88 in.) kanye nobukhulu bodonga obungadluli ku-25.4 mm (1 in.). Ubukhulu obujwayelekile bepayipi yesikwele bungafinyelela ku-22 in. × 22 in. Ukubekezelela ubukhulu bodonga: ubukhulu bodonga obulinganiselwe okungenani akufanele bube ngaphansi kuka-90% wobukhulu bodonga obucacisiwe.

I-ASTM A106 Ibanga C: Isebenza kumapayipi angenamthungo anosayizi wamapayipi ajwayelekile i-NPS ⅛ kuya ku-NPS 48 (DN 6 kuya ku-DN 1200), anobukhulu bodonga ngokwe-ASME B36.10M (amashejuli 10 kuya ku-160, XXH, njll.). Ukubekezelela ubukhulu bodonga: ubukhulu bodonga obulinganiselwe okungenani akufanele bube ngaphansi kuka-87.5% wobukhulu bodonga obucacisiwe.

4. Ukuqhathaniswa Kokwakheka Kwamakhemikhali

Umehluko ekwakhiweni kwamakhemikhali ubonisa izidingo zokusebenza ezihlukile. I-A106 Grade C idinga i-silicon (Si ≥ 0.10%) ukuthuthukisa ukumelana nokushisa kanye nokumelana nokushiswa kwe-oxidation, kanti i-A500 Grade C ayinayo imfuneko ye-silicon. I-A106 iphinde ibeke imingcele eqinile ekungcoleni okuyingozi njenge-phosphorus ne-sulfur ukuqinisekisa ukuthembeka ngaphansi kwesevisi yokushisa okuphezulu kanye nokucindezela okuphezulu.

Okuphawulekayo ukuthi okuqukethwe kwekhabhoni kwe-A500 Grade C (0.27%) kuphansi kunokwe-A106 Grade C (0.35%), okunikeza i-A500 Grade C ukushibilika okungcono futhi kunciphisa ingozi yokuqhekeka ngesikhathi sokushibilika.

5. Ukuqhathaniswa Kwezakhiwo Zemishini

Izinhloso zamandla ziyahluka: I-A500 Grade C inamandla aphezulu okukhiqiza, okwenza ifaneleke kangcono ukumelana nokuguquguquka okuhlala njalo kwamalungu esakhiwo, kuyilapho i-A106 Grade C inamandla aphezulu okudonsa, okubonisa ikhono layo lokubekezelela ingcindezi yangaphakathi nokuvimbela ukwehluleka kokuqhuma.

I-A106 Grade C inikeza ukuguquguquka okungcono, okwenza ifanelekele ukugoba, ukufulela, kanye neminye imisebenzi yokwakha amapayipi. I-A500 Grade C, ngakolunye uhlangothi, ithola amandla ayo aphezulu ngokuqinisa umsebenzi ngesikhathi sokwakha okubandayo.

6. Izindawo Ezisebenzayo kanye Namakhodi Obunjiniyela

Lezi zindinganiso ezimbili zisetshenziswa ezindaweni ezihlukene kakhulu futhi zilandela amakhodi okuklama ahlukene:

7. Iziqondiso Zokukhetha

Ekukhetheni izinto zobunjiniyela ezisebenzayo, izimiso ezilandelayo zingasetshenziswa:

1. Ukuma kuqala: Uma umdwebo udinga ipayipi eliyisikwele, elingunxande, noma elinomumo okhethekile, khetha i-ASTM A500 Ibanga C – I-A106 ayizivezi nhlobo lezi zinhlobo.
2. Kumapayipi ayindilinga, cabanga ngokusetshenziswa: Uma kuyikholomu yesakhiwo, i-diagonal brace, noma ilungu le-truss elibhekene nemithwalo yomoya, imithwalo efile, noma amanye amandla angaphandle → khetha i-ASTM A500 Grade C. Uma kuyimishini yokuxhuma ipayipi yenqubo, ehambisa umusi noma uketshezi lwe-hydrocarbon ngaphansi kwengcindezi yangaphakathi ephezulu kanye nokushisa → khetha i-ASTM A106 Grade C.
3. Izinga Lokushisa: Ukuze uthole izingxenye zesakhiwo sokushisa okuzungezile, khetha i-A500 Grade C; ukuze uthole izinhlelo zamapayipi ezizosebenza ngokuqhubekayo emazingeni okushisa aphezulu (≥350°C), khetha i-A106 Grade C.

Ngamafuphi: ekuthwaleni umthwalo wesakhiwo, sebenzisa i-A500 Grade C; ekuthwaleni uketshezi olushisa kakhulu, sebenzisa i-A106 Grade C. Lokhu kokubili akukwazi ukushintshaniswa kobunjiniyela.