1. ASTM A671 CB60 Class 40 steel yeeb nkab yog dab tsi?
A premium carbon-manganese EFW (Electric-Fusion-Welded) yeeb nkabtsim rauultra-siab- siab thiab kev pabcuam cryogenic, ua raws liASTM A671-25 Cov khoom siv raw khoom.
CB 60: Carbon -manganese steel (0.25% max C, 1.20% Mn) nrogCharpy cuam tshuam kuaj ntawm -50℃F / -46 degreerau qhov tsis tshua muaj siab -kub toughness.
Chav Kawm 40: Yam tsawg kawg nkaus yield zog ntawm40 ksi (276 MPa), qib siab tshaj plaws nyob rau hauv CB60 series, tailored rau lub zog tseem ceeb thiab kev siv tshuab.
2. Cov ntawv thov tseem ceeb hauv xyoo 2025?
Hydrogen Infrastructure: Primary pipelines rau70% H₂ sib tov(ibASME B31.12-2025).
Carbon Capture & Cia (CCS): Supercritical CO₂ transport at pressures >3,000 psi.
Offshore Roj & Roj: High-siab risers thiab subsea manifolds (DNV-OS-F101-2025 raws).
3. Technical Advancements vs. Cov chav kawm qis (piv txwv li, Chav Kawm 33)?
Lub zog: 21% yield zog dua Class 33 (40 vs . 33 ksi), ua kom10-15% poob phausrau qhov sib npaug siab ntsuas.
Fracture Control: Yuav tsum tauCTOD (Crack Tip Opening Displacement) thiab DWTT (Trop-Kev Ntsuas Ntsuas Qhov Ntsuas) for all thicknesses >0.5 nti (12.7 hli).
Nqi: 20–25% premium tshaj Class 33 (2025 Q4 avg:4,000-4,000-4,800/ton).
4. 2025 Kev Ntsuam Xyuas & Kev Hloov Kho Kev Ua Raws Cai
NDT: AI-tsav phased-array UT + digital radiographyrau 100% kev soj ntsuam vuam (ISO 19285: 2025).
Traceability: Quantum{0}}kev ruaj ntseg digital MTRsnrog embedded IoT sensors rau tiag tiag -time tracking data.
Sustainability: Tsim nyog rauUS IRA "Advanced Materials" se credit(12% rov qab) thiabEU Green Taxonomykev sib tw.
5. Kev Muag Khoom & Cov Qauv Thoob Ntiaj Teb
Thawj Standard: ASTM A671-25 Cov khoom siv raw khoom(Nqe 20 rau Chav Kawm 40 tshwj xeeb).
Lwm txoj kev:
TS EN 10217-6 P690QH(EU, -60℃cuam tshuam kuaj).
GB/T 5310-2025 40MnG(Tuam Tshoj, xav kom H₂ validation).
