1. ASTM A671 CB60 Class 32 steel yeeb nkab yog dab tsi?
A tom ntej no -generation carbon-manganese EFW yeeb nkabrauultra-siab-siab (UHP) thiab cov ntawv thov cryogenic, ua raws liASTM A671-25 Cov khoom siv raw khoom.
CB 60: Carbon -manganese steel (0.25% max C, 1.20% Mn) nrogtxhim kho qis-kub toughness(Charpy kuaj ntawm-40 ° F / -40 ° C).
Chav Kawm 32: Yam tsawg kawg nkaus yield zog ntawm32 ksi (221 MPa), qhov kev ua tau zoo tshaj plaws hauv CB60 series.
2. Cov ntawv thov tseem ceeb hauv xyoo 2025?
Hydrogen Economy: Primary pipelines rau50% H₂ sib tov(ibASME B31.12-2025).
Zog: Supercritical CO₂ thauj hauv CCS cov haujlwm.
Offshore Roj & Roj: High-siab risers (tsis yog- qaub, DNV-OS-F101-2025 raws).
3. Technical Advancements vs. Chav Kawm 31?
Lub zog: 3.2% siab zog tawm los (32 vs . 31 ksi), ua kom muaj zog5-8% cov khoom txuag.
Fracture Control: Yuav tsum tauCTOD + Charpy kuajrau tag nrho cov thickness.
Nqi: 10–12% premium tshaj Class 31 (2025 avg:3,200–3,200–3,800/ton).
4. 2025 Kev Ntsuam Xyuas & Ua Raws Li Kev Hloov Kho Tshiab
NDT: AI-powered phased-array UTnrog 3D weld mapping.
Traceability: Quantum{0}}kev ruaj ntseg digital MTRsnrog embedded nanosensors.
Sustainability: Ua tiavTS EN ISO 14067: 2025carbon footprint ntawv pov thawj.
5. Kev Muag Khoom & Cov Qauv
Thawj Standard: ASTM A671-25 Cov khoom siv raw khoom(Nqe 17 rau Chav Kawm 32).
Lwm txoj kev:
TS EN 10217-6 P550NH(EU, -60℃cuam tshuam).
GB/T 5310-2025 30MnG(Tuam Tshoj, H₂-npaj variant).
