1. ASTM A671 CB60 Class 13 steel yeeb nkab yog dab tsi?
A carbon-manganese hluav taws xob- fusion-welded (EFW) yeeb nkabtsim raunruab nrab-siab thiab qis-kev siv kub, ua raws liASTM A671-25 Cov khoom siv raw khoom.
CB 60: Qhia meej txog cov pa roj carbon -manganese steel muaj pes tsawg leeg (0.25% max C, 1.20% Mn) nrogCharpy cuam tshuam kuaj ntawm -20℃F / -29 degree.
Chav Kawm 13: Yam tsawg kawg nkaus yield zog ntawm13 ksi (90 MPa), nyob nruab nrab ntawm qis - thiab nruab nrab - qib kev pabcuam siab.
2. Cov ntawv thov tseem ceeb hauv xyoo 2025?
Kev Siv Hluav Taws Xob: Compressed cua tshuab, qis -sib nqus pa network (<200 psi).
Dej Infrastructure: Cov kav dej hauv nroog thiab cov kab xa tawm.
Kev hloov hluav taws xob: Pab piping rauxiav hydrogentej yaam num (tsis yog{0}} ntu tseem ceeb).
3. Kev sib piv rau Chav Kawm 12 lossis CB60 Qib?
Lub zog: 8% yield zog dua Class 12 (13 vs . 12 ksi), tso cai5-7% phab ntsa thickness txorau qhov sib npaug siab.
Weldability: Yuav tsum taupreheat (200-250 ° F / 93-121 ° C) for thicker sections (>0.5 in / 12.7 mm) vim muaj Mn cov ntsiab lus siab dua.
Nqi: 6–10% premium tshaj Class 12 (2025 Q4 avg:1,400–1,400–1,700/ton).
4. 2025 Kev Ntsuam Xyuas & Ua Raws Li Kev Hloov Kho Tshiab
NDT: Default10% qhov chaw radiography; tag nrho RT/UT tsuas yog rau kev pabcuam cryogenic lossis cyclic.
Traceability: Digital MTRsnrog blockchain- txheeb xyuas cov lej ntsuas kub (ibTS EN ISO 10474: 2025).
Sustainability: Tsim nyog rauEU Green Taxonomyraws li "cov khoom siv hloov pauv" (Scope 3 emissions<2.5 tCO2e/ton).
5. Kev Muag Khoom & Cov Qauv Thoob Ntiaj Teb
Thawj Standard: ASTM A671-25 Cov khoom siv raw khoom(Nqe 8 rau Chav Kawm 13 tshwj xeeb).
Lwm txoj kev:
EN 10217-1 P275TR2(Tebchaws Europe)
JIS G3454 STPG410(Asia)
