Q1: Cov qib twg feem ntau siv rau kev tiv thaiv hluav taws (sprinklers)?
A1: ASTM A795 Qib A lossis Byog tus qauv specification rau kev tiv thaiv hluav taws. Nws yog feem ntau muab kub -dip galvanized rau corrosion kuj -3-7.
Q2: Qhov txawv ntawm API 5L X42 thiab X52 yog dab tsi?
A2:Ob leeg yog cov kab yeeb nkab qib. X52 muaj qhov muaj zog tsawg dua qhov muaj zog (52,000 psi) piv rau X42 (42,000 psi), tso cai rau kev ntsuas siab dua lossis cov phab ntsa nyias nyias rau tib lub siab -5-8.
Q3: Vim li cas ASTM A179 siv rau kev sib hloov cua sov?
A3:ASTM A179 yog ib qho txias -kos, qis- carbon steel tube tshwj xeeb rau kev sib pauv cua sov thiab cov condensers. Qhov txias- txheej txheem kos duab muab qhov zoo tshaj plaws ntawm qhov tiav thiab qhov ntev, uas yog qhov tseem ceeb rau kev ua haujlwm kub hloov pauv -5.
Q4: Dab tsi yog qhov tseem ceeb ntawm ASTM A210 Qib C?
A4:ASTM A210 yog ib qho nruab nrab - carbon steel seamless raj siv rau boilers, superheaters, thiab tshav kub exchangers uas siab zog tshaj qib A-1 yog yuav tsum tau -2-5.
Q5: Dab tsi yog "Sour Service" hais txog carbon steel yeeb nkab?
A5:Kev pabcuam qaub yog hais txog ib puag ncig uas muaj cov dej ntub dej Hydrogen Sulfide (H₂S). Hauv cov xwm txheej no, cov pa roj carbon monoxide yog qhov raug rau Sulfide Stress Cracking (SSC). Cov kav dej rau cov kev pabcuam qaub yuav tsum muaj kev tswj xyuas nruj, chemistry, thiab kev kho cua sov, feem ntau ntawm NACE MR0175/ISO 15156 -9.
