GB / T 9948 Seamless Steel Tubes Rau Petroleum Cracking
Khoom Specification
GB / T 9948 yog Suav tus qauv uas qhia txog cov kev cai rau seamless steel raj siv hauv roj av tawg. Cov raj no yog cov khoom siv tseem ceeb hauv kev lag luam petrochemical, qhov chaw uas lawv raug rau qhov kub thiab txias. Tus qauv xyuas kom meej tias cov raj muaj qhov tsim nyog txhua yam thiab tshuaj lom neeg los tiv thaiv cov xwm txheej hnyav.
Ntsiab nta
Kub Kub Resistance: Tsim los ua haujlwm nyob rau hauv qhov kub thiab txias, ua rau lawv haum rau siab - cov ntawv thov kub hauv cov roj av refineries.
Corrosion Resistance: Cov tshuaj muaj pes tsawg leeg ntawm cov hlau muab kev tiv thaiv zoo heev rau corrosion, uas yog ib qho tseem ceeb nyob rau hauv ib puag ncig uas cov hlab raug rau ntau yam tshuaj.
Durability: Seamless kev tsim kho ntawm cov hlab ntsha ua kom muaj kev ruaj khov thiab kev ntseeg siab, txo qhov kev pheej hmoo ntawm kev ua tsis tiav thaum lub sijhawm ua haujlwm.
Ntau yam: Haum rau ntau yam kev siv hauv kev lag luam petrochemical, suav nrog cov tshuab tawg thiab cov hloov kho.
Tshuaj muaj pes tsawg leeg
| Element | Kev sib xyaw (%) |
| Cov pa roj carbon (C) | 0.15 - 0.20 |
| Silicon (Si) | 0.20 - 0.35 |
| Manganese (Mn) | 0.40 - 0.70 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (hli) | 0.15 - 0.25 |
Mechanical Properties
| Khoom | Tus nqi |
| Tensile zog (MPa) | Ntau dua lossis sib npaug rau 485 |
| Yield zog (MPa) | Ntau dua lossis sib npaug li 275 |
| Elongation (%) | Ntau dua lossis sib npaug li 21 |
| Hardness (HB) | Tsawg dua lossis sib npaug li 156 |
Lub cev muaj zog
| Khoom | Tus nqi |
| Qhov ceev (g / cm³) | 7.85 |
| Thermal conductivity (W / m · K) | 46.0 |
| Lub peev xwm kub tshwj xeeb (J / kg·K) | 460 |
Txheej Txheem Kev Ua Haujlwm
| Txheej txheem | Kev ua tau zoo |
| Vuam | Zoo |
| Tshuab dhos | Nruab nrab |
| tsim | Zoo heev |
| Kev kho cua sov | Siv tau |
Qib Steel
Cov qib steel tau teev tseg raws li GB / T 9948 suav nrog ntau yam carbon thiab alloy steels. Cov qib no yog tsim los ua kom tau raws li cov kev cai tshwj xeeb ntawm siab - kub thiab siab - kev siv siab hauv kev lag luam petrochemical. Tus qauv muab cov lus qhia txog cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab rau txhua qib, kom ntseeg tau tias lawv ua tau zoo tshaj plaws hauv lawv cov ntawv thov.
Daim ntawv thov
GB / T 9948 seamless steel raj feem ntau yog siv hauv kev lag luam petrochemical rau:
Cracking Rauv: Qhov twg hydrocarbons tawg mus rau hauv yooj yim molecules.
Reformers: Siv rau hauv kev tsim cov hydrogen thiab lwm yam tshuaj.
Thaum tshav kub kub Exchangers: Rau kev hloov pauv cua sov hauv ntau yam txheej txheem.
Cov kav dej: Thauj siab -kub kua dej nyob rau hauv refineries.
Cov qhab nia xaiv tau
Thaum GB / T 9948 yog tus qauv siv dav hauv Suav teb, muaj lwm cov qauv thoob ntiaj teb uas yuav raug txiav txim siab nyob ntawm cov kev cai tshwj xeeb:
ASTM A335 Cov Lus Qhia Tshwj Xeeb: Specification rau seamless ferritic alloy - steel yeeb nkab rau siab - kub kev pab cuam.
TS EN 10216-2: European txheem rau seamless steel raj rau lub hom phiaj siab.
JIS G3458: Japanese tus qauv rau alloy steel kav rau siab - qhov kev pab kub.
Cim npe nrov: seamless steel raj rau roj av cracking, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, customized, lag luam wholesale, nqe, OEM, zeb, tsim, kev muag khoom
