1. ASTM A671/CG100 Class 42 Steel Pipe yog dab tsi?
Teb:
ASTM A671 / CG100 Chav Kawm 42 sawv cev rausiab tshaj -tier hluav taws xob- fusion-welded (EFW) carbon steel yeeb nkabRaws li ASTM A671, engineered rausiab heev thiab cryogenic tej yam kev mob tshaj Class 41.
"CG100": Carbon steel nrog ultra- tsis tshua muaj sulfur / phosphorus ( Tsawg dua lossis sib npaug li 0.010%) rau kev txhim kho toughness.
"Klass 42": QhiaKev ntsuas hydrostatic ntawm 200% ntawm cov khoom muaj zog, qhov yuav tsum tau nruj tshaj plaws nyob rau hauv tus qauv.
Daim ntawv thov:
Hyperbaric subsea systems (>10,000 psi).
Nuclear fusion reactor coolant kab.
Strategic hydrogen cia infrastructure.
2. Chav Kawm 42 Piv rau Chav Kawm 41 lossis API 5L X80 li cas?
Teb:
| Txuj | Kuaj Siab | Qhov Tseem Ceeb |
|---|---|---|
| Chav Kawm 41 (A671) | 175% yield | Heev heev overpressure |
| Chav Kawm 42 (A671) | 200% tawm los | Nuclear/defense- qib kev ntseeg tau |
| API 5L X80 | 72% tawm los (ib ISO 3183) | High -lub zog seamless lwm txoj |
| Nco tseg: Chav Kawm 42 yog niche raulub hom phiaj-cov txheej txheem tseem ceebqhov twg ua tsis tau. |
3. Dab tsi yog Txoj Cai Lij Choj Ua Haujlwm?
Teb:
Kub: Certified rau-196℃rau 425 degree(kua nitrogen rau siab -kub chav).
Siab: Validated rauNtau dua lossis sib npaug li 15,000 psi(ib ASME B31.12 rau hydrogen pipelines).
Material Science:
Yuav tsum tauThermomechanical tswj kev ua haujlwm (TMCP).
Charpy feem ntau dua los yog sib npaug rau 100J ntawm -196℃(kua nitrogen kub).
4. Cov qauv thiab ntawv pov thawj siv dab tsi?
Teb:
Thawj StandardASTM A 671 +Appendix X6(Cov kev xav tau ntxiv rau hoob 42).
Yuav tsum xeem:
100% phased-array UT + suav radiography (CR).
Hydrogen{0}}induced cracking (HIC) tests per NACE TM0284.
Cov ntawv pov thawj:
ASME Nuclear Certification (NPT).
DNV-OS-F101 rau cov ntawv thov offshore.
5. Dab tsi yog Fabrication & Handling Imperatives?
Teb:
Vuam:
Laser -hybrid vuamnrog - sij hawm NDT saib xyuas.
PWHT at650℃± 10 degreerau 2 teev / nti thickness.
NDT: Digital ntxaib -pab ultrasonic imaging.
Logistics:
Thauj nyob rau hauv nitrogen-purged ntim kom tsis txhob ya raws.
ISO 8501-1 Sa3 moj tej tawg tu ua ntej txheej.
Tswv yim Pro: Rau qhov chaw siv, qhia meejKev xeem tawm ntawm ib qho ECSS-Q-ST-70-02C.
