1. ASTM A671 CJB115 Class 33 Steel Pipe yog dab tsi?
Teb:ASTM A671 CJB115 Chav Kawm 33 yog apremium fais-fusion-welded (EFW) carbon steel yeeb nkabtsim rausiab heev -pressure industrial applications(Kev pabcuam kub siab tshaj -20 ° F / -29 ° C). Lub npe "Class 33" qhia tias aYam tsawg kawg nkaus lub zog ntawm 33 ksi (228 MPa), ua rau nws haum rau cov kev xav tau tshaj plaws ntawm lub tshuab siab.
2. Cov khoom tseem ceeb?
Teb:
Mechanical:
Tawm Zog: Ntau dua lossis sib npaug rau 33 ksi (228 MPa)
Tensile zog: 105-125 ksi (724-862 MPa)
Impact Test: Yuav tsum muaj rau txhua daim ntawv thov
Tshuaj:
Carbon (C): Tsawg dua lossis sib npaug li 0.35%
Manganese (Mn): 1.30-1.60%
P/S: Tsawg dua lossis sib npaug li 0.025% (kev tswj nruj)
3. Cov ntawv thov zoo li cas?
Teb:
Ultra-siab- hydraulic systems (5000+ psi)
Fais fab nroj tsuag tseem ceeb chav kab
Offshore roj & roj risers
Nuclear auxiliary piping systems
4. Nws piv rau Class 32 thiab Class 35 li cas?
Teb:
| Chav kawm | Yield zog | Qib Kev Ua Haujlwm |
|---|---|---|
| 32 | 32 ksg | Siab -siab |
| 33 | 33 ksg | Siab heev -siab |
| 35 | 35 ksg | Cov ntawv thov tshwj xeeb |
5. Fabrication Requirements?
Teb:
Vuam:Preheat (425 ° F min.) + PWHT (1150-1275 ° F)
Kev sim:Hydrostatic (3x tsim siab) + 100% RT/UT + hardness testing
Kev tsim:Kub tsim yuav tsum tau
Ntawv pov thawj:Tag nrho traceability nrog thib peb -kev tshuaj ntsuam xyuas
