1. A671 CC65 Class30 Pipe yog dab tsi?
A carbon steel yeeb nkabUa raws li ASTM A671 tus qauv, tshwj xeeb:
Qib: CC65 (cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab txhais tau tias).
Chav kawm: 30 (tsim kev ntsuas siab thiab ntsuas qhov xav tau).
Siv: Feem ntau rauqis-kev pabcuam kub(eg, -20℃F rau +100℃F).
2. Cov khoom tseem ceeb?
Cov ntsiab lus carbon: ~ 0.30% max (CC65 qib).
Tensile zog: Ntau dua lossis sib npaug rau 65 ksi (448 MPa).
Kev sim cuam tshuam: Yuav tsum tau rau Chav Kawm 30 (kom toughness ntawm qis temps).
3. Cov ntawv thov siv li cas?
Roj & Roj: Cov kav dej hauv qhov chaw txias.
Fais fab nroj tsuag: Tsawg-cov kab hluav taws xob siab.
Cov qauv tsim: Tsis yog - kev txhawb nqa tseem ceeb.
4. Nws txawv li cas ntawm A672?
A671: Hluav taws xob{0}} fusion weldedcov kav dej rau atmospheric/low-temp use.
A672: Zoo sib xws tab sis rausiab -siabcov kev pabcuam (piv txwv li, Chav kawm 22=siab dua PSI).
5. Cov kev xeem & ntawv pov thawj?
Hydrostatic Test: Yuav tsum tau (1.5x tsim siab).
NDT: Xaiv tau rau Chav Kawm 30 (piv txwv li, radiography yog tias tau teev tseg).
Daim ntawv pov thawj: Mill Test Reports (MTRs) muab.
