1. ASTM A671 CF65 Class 10 Steel Pipe yog dab tsi?
Teb:
ASTM A671 CF65 Chav Kawm 10 yog ib qhohluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabtsim rauqis-kev pabcuam kub(hauv qab-65 ° F / -54 ° C). Cov ntsiab lus tseem ceeb:
CF 65: Cov khoom siv qib yuav tsum tauCharpy V- ntsuas qhov cuam tshuam ntawm -65℃Fvalidate cryogenic toughness.
Chav Kawm 10: Yam tsawg kawg nkaus yield zog ntawm10ksi (69 MPa), feem ntau yog siv raulow-siab cryogenic systems(piv txwv li, industrial gas pipelines, tub yees units).
2. Dab tsi yog qhov kev tsim khoom thiab ntawv pov thawj?
Teb:
Vuam: EFW txheej txheem nrog tus qauv muab tub lim hlau,100% kev kuaj pom pom + chaw RT.
Kev kho cua sov: Kev nyuaj siab-relieved (optional for Class 10).
Daim ntawv pov thawj: MTRs yuav tsum suav nrog:
Kev sib xyaw ua ke (piv txwv li, C Tsawg dua lossis sib npaug li 0.30%, Mn Tsawg dua lossis sib npaug li 1.20%).
Mechanical zog (yield ntau dua los yog sib npaug rau 10 ksi, tensile 55-80 ksi).
Impact tests ntawm-65℃F(min 15 ft-lb avg.).
3. Chav Kawm 10 piv rau lwm chav ASTM A671 li cas?
Teb:
| Parameter | CF65 Chav Kawm 10 | CF65 Chav Kawm 20 | CF65 Chav Kawm 60 |
|---|---|---|---|
| Yield zog | 10ksi (69 MPa) | 20 ksi (138 MPa) | 60 ksi (414 MPa) |
| Daim ntawv thov | Tsawg- siab cryogenic | Nruab nrab -siab | Siab -siab |
| Nqi | Tsawg | Nruab nrab -ntaus | Hwm |
4. Dab tsi yog qhov ntev thiab qhov kam rau ua?
Teb:
Txoj kab uas hla: 16"-120" OD.
Phab ntsa Thickness: Ua siab ntev± 12.5% nominal thickness.
Ntev: Feem ntau 40ft (12.2m).
5. Yuav ua li cas thiaj li tiv thaiv corrosion?
Teb:
Sab nraud:
Basic FBE txheej los yog xim rau qhov chaw me me.
Sab hauv:
Epoxy txheej rau tshuaj tiv thaiv (yog tias xav tau).
Kev tu:
Kev tshuaj xyuas pom ib xyoos ib zaug rau cov ntawv thov kev pheej hmoo tsawg -.
