Uma ufuna ukwazi ulwazi olwengeziwe, njengekhotheshini, imikhiqizo, izixazululo, njll., pqashaxhumana nathi ku-inthanethi.
I-Tianjin Sanon Steel Pipe Co., Ltd. ingumthengisi wamasheya. Ifektri yethu yamasheya iseDolobheni laseCangzhou, eSifundazweni saseHebei. Imithombo yethu eyinhloko yezimpahlaamapayipi ebhoyila, futhi izinto ezimele ziyiI-ASTM A335 P5/P11/P91/P92,I-ASME SA-106/SA-106MGR.B,I-GB/T 3087-200810#/20#. Izinto ezimele amapayipi epayipi yileziI-API 5L,I-API 5CT, izinto ezimele amapayipi okuqhekeka kwephethiloliI-GB/T 9948ziyi-15MoG/12CrMoVG. I-GB/T 6479-2013 imele izinto ezingu-10#/20#, amashubhu okushintshanisa ukushisa i-SA179/SA210/SA192, njll., amashubhu omshini i-GB/T 8162 amele izinto ezingu-10#/20#/Q345/42CrMo, i-EN10210 imele izinto ezingu-S355JOH/S355J2H, amashubhu esilinda segesi i-GB1 8248, amele izinto ezingu-34CrMo4/30CrMo.
1. Isingeniso
I-ASTM A333 Gr.6iwumbhobho wensimbi yekhabhoni osetshenziswa kabanzi osezingeni eliphansi lokushisa, onezinga lokushisa eliphansi lenkonzo elingu--45°C. Ngenxa yokuqina kwayo okuhle kakhulu kwezinga eliphansi lokushisa kanye nokusebenza kahle kwezindleko, isetshenziswa kakhulu ezitshalweni ze-petrochemical, imishini ye-cryogenic, kanye nezinhlelo zokudlulisa igesi elimanzi.
Ekuthengeni kobunjiniyela,Amapayipi e-A333 Gr.6zivame ukuhlukaniswa ngezimo ezimbili zokuphakelwa: "Insizakalo Emuncu" kanye "Nensizakalo Emnandi" (ejwayelekile/ejwayelekile). Ngenkathi zombili izinhlobo zihlangabezana nezidingo eziyisisekelo zokwakheka kwamakhemikhali kanye nezakhiwo zemishini ze-ASTM A333 standard, zihluke kakhulu ekumelaneni kwazo nokugqwala kwe-hydrogen sulfide (H₂S)—umehluko onquma izimo zazo zokusetshenziswa ezihlukile ngokusobala.
2. Umehluko Omkhulu Phakathi Kwesevisi Emuncu Nemnandi
2.1 Imibandela Yesevisi
Isevisi Emnandi (Ayimuncu): Ifanelekela izindawo ezingenayo i-H₂S noma ezinengcindezi engaphelele ye-H₂S ephansi kakhulu. Izinto eziyinhloko okufanele zicatshangelwe ukwakheka ukuqina kwezinga lokushisa eliphansi kanye nomthamo ojwayelekile wokuthwala ingcindezi.
Isevisi Emuncu: Yakhelwe ngqo izindawo eziqukethe i-H₂S emanzi, lapho izinto kufanele zikwazi ukumelana namazinga okushisa aphansi kanye nokugqwala kwe-H₂S ngasikhathi sinye. Izinto zesevisi emuncu nazo zamukelekile ngokuphelele ekusetshenzisweni kwesevisi emuncu.
2.2 Ukulawulwa Kokwakheka Kwamakhemikhali
Nakuba incazelo yesisekelo se-ASTM A333 Gr.6 ibeka imikhawulo ye-C, Mn, P, S, nezinye izakhi, amapayipi esevisi e-sour adinga ukulawulwa kwamakhemikhali okuqinile kakhulu:
| Ipharamitha | I-A333 Gr.6 ejwayelekile | Isevisi Emuncu A333 Gr.6 |
| I-Sulfur (S) | ≤ 0.035% | Kulawulwa ngokuqinile, ngokuvamile ≤ 0.015% |
| I-Phosphorus (P) | ≤ 0.035% | Kulawulwa ngokuqinile, ngokuvamile ≤ 0.025% |
| I-Carbon Equivalent (CE) | Akuphoqelekile | Kunqunyelwe kakhulu (isb., ≤ 0.43%) ukuvimbela ubulukhuni obukhulu |
Ngokunciphisa ukungcola okufana ne-S ne-P, kanye nokunciphisa okulingana nekhabhoni, amapayipi esevisi kasawoti anciphisa ukuthambekela kokuqhekeka kokugqwala kwe-sulfide stress corrosion (SSC) ngokombono wokwakheka kwamakhemikhali.
2.3 Izidingo Zokuqina Nokushisa
Ukulawula ukuqina kungenye yezinto ezibaluleke kakhulu ezihlukanisa phakathi kwesevisi emuncu nemnandi. Isevisi emuncu i-A333 Gr.6 idinga ukuqina okuphezulu okungu-22 HRC (Rockwell C) noma okungu-248 HBW. Lokhu kungenxa yokuthi izakhiwo ezincane zokuqina okuphezulu zithambekele kakhulu ekuqhekekeni okubangelwa yi-hydrogen kanye nokuqhekeka kokugqwala kokucindezeleka ezindaweni ze-H₂S.
Ngokuphathelene nokwelashwa kokushisa, amapayipi esevisi emuncu ngokuvamile adinga izinqubo ezijwayelekile noma ezicishiwe kanye nezithambile (Q&T) ukuze kufezwe isakhiwo esincane esifanayo, esinobucwebe obuhle esithuthukisa ukumelana kwe-SSC. Amapayipi esevisi ajwayelekile (amnandi) anezidingo zokwelapha ukushisa ezikhululekile.
2.4 Izidingo Zokuhlola Ezengeziwe
Amapayipi esevisi e-Sour kumele ahlolwe ukuhambisana nezindinganiso ze-NACE (isb., i-NACE MR0175 / ISO 15156), ngokuvamile afaka:
Ukuhlolwa kwe-SSC (Ukuqhekeka Kokucindezeleka Kwe-Sulfide, i-NACE TM0177)
Ukuhlolwa kwe-HIC (Ukuqhekeka Okubangelwa yi-Hydrogen, i-NACE TM0284)
Amapayipi esevisi ajwayelekile (amnandi) ngokuvamile adinga kuphela ukuhlangabezana nezidingo zokuhlolwa komthelela wokushisa okuphansi kwe-ASTM A333 (-46°C, amandla omthelela aphakathi nendawo ≥ 20J) kanye nokuqinisekiswa kwempahla ejwayelekile yemishini.
3. Isifinyezo kanye nezincomo zokukhetha
| Isici | I-A333 Gr.6 ejwayelekile | Isevisi Emuncu A333 Gr.6 |
| Isevisi Yendawo | Akukho H₂S noma H₂S enganakwa | I-sour media emanzi equkethe i-H₂S |
| Umkhawulo Wokuqina | Akukho mkhawulo okhethekile | ≤ 22 HRC / 248 HBW |
| Ukwelashwa Kokushisa | Ukucubungula okuvamile | Isakhiwo esincane esijwayelekile noma se-Q&T; esifanayo |
| Ukuhlolwa Okwengeziwe | Ukuhlolwa komthelela wokushisa okuphansi | Ukuhlolwa kwe-SSC + HIC ngokwezindinganiso ze-NACE |
| Ukuthobela imithetho kwe-NACE | Akudingeki | Ihambisana ne-NACE MR0175 |
Izincomo Zokukhetha: Ngesikhathi sesigaba sokuklama, kubalulekile ukunquma ukuthi i-H₂S ikhona yini endaweni yesevisi. Uma kunezimo ze-H₂S ezimanzi, incazelo yokuthengwa kumele isho ngokucacile ukuthi "i-A333 Gr.6 ye-Sour Service, ehambisana ne-NACE MR0175 / ISO 15156," enezidingo ezicacile zokuqina, okulingana nekhabhoni, ukwelashwa kokushisa, kanye nokuhlolwa okwengeziwe. Amapayipi ajwayelekile e-A333 Gr.6 akufanele asetshenziswe ezindaweni ezimuncu, njengoba lokhu kungaholela ekwehlulekeni okukhulu kokuqhekeka kokugqwala kokucindezeleka.
Isikhathi sokuthunyelwe: Julayi-02-2026
