I-ASTM A106 Gr.BIpayipi lensimbi elingenamthungo liyipayipi elingenamthungo lensimbi yekhabhoni elinokushisa okuphezulu ku-American Society for Testing and Materials standard, elivame ukusetshenziselwa ukuthuthwa koketshezi ngaphansi kokushisa okuphezulu kanye nendawo yokucindezela okuphezulu. Izinto ezihambisanayo eShayina zibhekisela kakhulu kumazinga kazwelonke aseShayina (GB) kanye namazinga embonini, futhi zidinga ukufaniswa ngezindlela ezintathu: ukwakheka kwamakhemikhali, izakhiwo zemishini, kanye nezimo zokusetshenziswa.

Ngokuvamile kunezinketho ezimbili zokuqhathanisa izinto zasekhaya:

Izinto zokuqala ezihambisanayo: insimbi engu-20 (GB/T 8163)
Insimbi engu-20 iyinsimbi evamile yesakhiwo sekhabhoni, okuyizinto ezivamile ku-GB/T8163 standard futhi ifanele ukuthuthwa koketshezi olujwayelekile. Ukuqhathaniswa kokwakheka kwamakhemikhali: I-ASTM A106 Gr.B inokuqukethwe kwekhabhoni (C) okungu-0.17-0.24%, kanye ne-manganese (Mn) okungu-0.29-1.06%; Insimbi engu-20 inokuqukethwe kwekhabhoni okungu-0.17-0.24%, kanye nokuqukethwe kwe-manganese okungu-0.35-0.65%. Okuqukethwe kwekhabhoni kwalaba ababili kusondelene, kodwa okuqukethwe kwe-manganese kwe-ASTMA106 Gr.Binomkhawulo ophezulu ophezulu kanye nokusebenza okungcono kwezinga lokushisa eliphezulu.
Ukuqhathaniswa kwezakhiwo zemishini: I-ASTM A106 Gr.B inamandla okudonsa angu->415MPa kanye namandla okudonsa angu->240MPa; insimbi engu-20 inamandla okudonsa angu->410MPa kanye namandla okudonsa angu->245MPa. Idatha iyafana kodwa amazinga okushisa afanele ahlukile.
Imikhawulo yokusetshenziswa: Insimbi engu-20 ifanelekela izimo zokusebenza ezinokushisa okuklanywe ngaphansi kuka-350℃ kanye nomfutho ophansi. Uma isetshenziselwa ukushisa okuphezulu kanye nomfutho ophezulu (njengamapayipi ebhoyila), kufanele kukhethwe izinto ezisezingeni eliphezulu.
Izinto zesibili ezihambisanayo: 20G (I-GB 5310)
I-20G iyipayipi lensimbi elingenamthungo lama-boiler anomfutho ophezulu, elihambisana nezindinganiso ze-GB 5310 futhi lifanele izinhlelo zomusi ezishisa kakhulu nezinomfutho ophezulu.
Ukuqhathaniswa kokwakheka kwamakhemikhali:20Ginokuqukethwe kwekhabhoni okungu-0.17-0.24%, okuqukethwe kwe-manganese okungu-0.35-0.65%, kanye nokulawulwa okuqinile kokuqukethwe kwe-phosphorus ne-sulfur, okuhambisana kakhulu nezinkomba ze-ASTMA106 Gr.B.
Ukuqhathaniswa kwezakhiwo zemishini: Amandla okudonswa kwe-20G angama-≥410MPa, futhi amandla ayo okukhiqiza angama->245MPa, okucishe kufane ne-ASTM A106 Gr.B, futhi izinga lokushisa lokusebenza elivumelekile lifinyelela ku-450℃.
Izimo Zokusebenza: I-20G ivame ukusetshenziswa kumapayipi ebhoyila ezitshalweni zamandla ezishisayo kanye nemishini yamakhemikhali enomfutho ophezulu, futhi ingathatha indawo ye-ASTM A106 Gr.B ngezimo ezifanayo zokusebenza.
Izinyathelo zokuvikela ukufaka esikhundleni 1. Umehluko ojwayelekile: I-ASTM A106 Gr.B idinga ukuhlolwa kokudonswa okuguquguqukayo kanye nokuhlolwa kokuthamba, kuyilapho i-GB/T 8163 idinga ukuhlolwa kokudonswa okude kuphela. Lapho kufakwa esikhundleni, kuyadingeka ukuqinisekisa ukuthi izinto zokuhlola ziyahlangabezana yini nezidingo.
2. Izidingo zokwelapha ukushisa: I-ASTM A106 Gr.B ivame ukulethwa isesimweni sokugoqwa okushisa, i-20G idinga ukwelashwa okuvamile, futhi inqubo idinga ukulungiswa uma ishintshwa.
3. Izidingo zesitifiketi: Uma iphrojekthi yokuthumela ngaphandle ichaza izinto ezijwayelekile zaseMelika, kuyadingeka ukuqinisekisa nekhasimende ukuthi ngabe ukufakwa kwezindinganiso kazwelonke kuyamukelwa yini. Amanye amaphrojekthi angadinga ukuhlolwa okwengeziwe komuntu wesithathu.
Icala lesicelo esiwusizo
Ibhizinisi lamakhemikhali kaphethiloli lithenge amapayipi e-ASTM A106 Gr.B okuthutha uwoyela okushisa okuphezulu. Ngenxa yomjikelezo omude wokulethwa, lashintshela ezintweni ezingu-20G. Ngemva kokuhlolwa komuntu wesithathu, ukuqina komthelela (-20℃ KV2234J) kanye namandla okushisa aphezulu (amandla okukhiqiza>180MPa ku-450℃) angu-20G kwahlangabezana nezidingo zomklamo, futhi iphrojekthi yamukelwa.
Isifinyezo
I-ASTM A106 Gr.B ingahambisana nensimbi engu-20 (izimo zokusebenza ezijwayelekile) noma engu-20G (izimo zokusebenza zokushisa okuphezulu kanye nokucindezela okuphezulu) eShayina. Lapho ushintsha, kuyadingeka ukuhlanganisa izinga lokushisa elithile, ingcindezi kanye nezindinganiso zokuhlola. Kunconywa ukuthi kunikezwe kuqala izinto ezingu-20G, ezakhiwe ngamakhemikhali kanye nokusebenza kwazo okusondele kakhulu ezidingweni ezijwayelekile zase-US futhi zinezinhlelo zokusebenza eziningi.