GB / T 9948 Seamless Steel Tubes Rau Petroleum Cracking
Khoom siv, Specification, Ntsiab nta
GB / T 9948 tus qauv qhia txog qhov yuav tsum tau ua rau seamless steel raj siv hauv kev siv roj av tawg. Cov raj no yog tsim los tiv taus qhov kub thiab txias, ua rau lawv cov khoom tseem ceeb hauv kev lag luam petrochemical. Cov khoom siv tshwj xeeb, cov yam ntxwv tseem ceeb, tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, cov khoom siv lub cev, cov txheej txheem kev ua tau zoo, qib steel, cov ntawv thov, thiab cov qib kev ua tau zoo yog qhov tseem ceeb rau kev txiav txim siab thaum siv cov raj no.
Tshuaj muaj pes tsawg leeg
| Lub ntsiab | Kev sib xyaw (%) |
| Cov pa roj carbon (C) | 0.17-0.24 |
| Silicon (Si) | 0.17-0.37 |
| Manganese (Mn) | 0.40-0.70 |
| Phosphorus (P) | Tsawg dua lossis sib npaug rau 0.035 |
| Sulfur (S) | Tsawg dua lossis sib npaug rau 0.035 |
| Chromium (Cr) | Tsawg dua lossis sib npaug rau 0.25 |
| Nickel (Ni) | Tsawg dua lossis sib npaug rau 0.25 |
| Copper (Cu) | Tsawg dua lossis sib npaug rau 0.25 |
Mechanical Properties
| Khoom | Tus nqi |
| Tensile zog | 655 MPa min |
| Yield zog | 415 MPa min |
| Elongation | 20% min |
| Hardness (HB) | max 197 hli |
Lub cev muaj zog
| Khoom | Tus nqi |
| Qhov ntom | 7.85 g / cm³ |
| Melting Point | 1420-1460 degree |
| Thermal conductivity | 24 W/(m·K) |
| Thaum tshav kub kub | 0.46 J/(g·K) |
Txheej Txheem Kev Ua Haujlwm
| Khoom | Tus nqi |
| Weldability | Zoo heev |
| Machineability | Zoo |
| Formability | Siab |
| Corrosion Resistance | Nruab nrab |
Steel Qib thiab Daim Ntawv Thov
Cov qib steel tau teev tseg hauv GB / T 9948 suav nrog 10, 20, 12CrMo, 15CrMo, 12Cr2Mo, 12Cr5Mo, 12Cr9Mo, thiab lwm yam kev hloov pauv. Cov qhab nia no raug xaiv los ntawm lawv cov khoom tshwj xeeb thiab tsim nyog rau kev ua haujlwm roj av tawg. Seamless steel raj pom cov ntawv thov hauv ntau cov txheej txheem hauv kev lag luam petrochemical, suav nrog kev ua kom zoo, tawg, thiab lwm yam kev ua haujlwm kub.
Cov qhab nia xaiv tau
Thaum GB / T 9948 qhia qee cov qib steel rau roj av tawg, muaj lwm cov qib muaj nyob rau hauv kev ua lag luam uas yuav muab cov yam ntxwv zoo sib xws lossis txhim kho kev ua tau zoo. Qee cov qhab nia xaiv tau los txiav txim siab suav nrog ASTM A335 P11, ASTM A213 T22, DIN 17175 13CrMo44, thiab JIS G3462 STBA24. Cov qib no tuaj yeem muab cov khoom sib txawv, tshuaj lom neeg, lossis lub cev muaj zog uas tuaj yeem ua tau zoo rau cov kev siv tshwj xeeb.
Hauv kev xaus, kev nkag siab txog cov khoom siv tshwj xeeb, cov yam ntxwv tseem ceeb, tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, lub cev muaj zog, cov txheej txheem kev ua haujlwm, qib steel, kev siv, thiab lwm yam qib ntawm GB / T 9948 seamless steel raj yog qhov tseem ceeb rau kev ua kom pom kev ua haujlwm zoo thiab kev ntseeg siab hauv cov roj av. kev ua haujlwm tawg.
Cim npe nrov: seamless steel raj rau roj av cracking, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, nqe, kev muag khoom
