1. ASTM A671 CB60 Class 12 steel yeeb nkab yog dab tsi?
A carbon-manganese hluav taws xob- fusion-welded (EFW) yeeb nkabraunruab nrab-siab thiab qis- kev pabcuam kub, ua raws liASTM A671-25 Cov khoom siv raw khoom.
CB 60: Carbon -manganese steel qib (max 0.25% C, ~ 1.20% Mn) nrogKev ntsuas cuam tshuam ntawm -20℃F / -29 degree.
Chav Kawm 12: Yam tsawg kawg nkaus yield zog ntawm12 ksi (83 MPa), bridging qis - thiab nruab nrab - kev siv siab.
2. Cov ntawv thov tseem ceeb hauv 2025?
Utility Networks: Kev faib dej / roj av, hauv cheeb tsam cov kav dej cua sov.
Industrial Systems: Compressed cua, qis -siab cov kab (<150 psi).
Cryogenic Auxiliary Piping: Secondary cooling loops (tsis yog- tseem ceeb).
3. Technical Advancements vs. Cov Qib qis (piv txwv li, Chav Kawm 10/11)?
Lub zog: 9% yield zog dua li Class 11 (12 vs . 11 ksi), ua komthinner phab ntsa rau qhov sib npaug ntawm qhov ntsuas siab.
Fabrication: Xaiv tauPWHT (Post-Kev kho cua sov)rau welds tseem ceeb (ib ASME B31.3-2025).
Nqi: 5-8% premium tshaj Class 11 (2025 avg:1,300–1,300–1,600/ton).
4. 2025 Kev Xeem & Ntawv Pov Thawj Hloov Kho Tshiab
NDT: Spot radiography default; tag nrho RT/UT tsuas yog tau teev tseg (xws li, rau kev pabcuam cryogenic).
Khoom siv Traceability: Digital MTRs nrogblockchain{0}}rov qab QR cov lej(ISO 10474: 2025).
Sustainability: Kev zam los ntawm EUCarbon Ciam Teb Taxnyob rau hauv qeb B (tsawg- cov ntaub ntawv emissions).
5. Kev Muag Khoom & Kev Ua Raws Li Ntiaj Teb
Cov qauv:
ThawjQauv: ASTM A671-25
Lwm txoj kev: EN 10217-1 P265TR2 (EU), JIS G3454 STPG370 (Asia).
