1. Q: Rau daim ntawv thov kev pabcuam qaub (muaj H2S), cov khoom carbon steel yeeb nkab qib twg yog qhov tseem ceeb los tiv thaiv sulfide kev nyuaj siab tawg (SSC)?
A:Qib sib ntsibISO 3183 / API 5L rau Sour Service(eg, X52 S, X65 S). Cov khoom tseem ceeb suav nroghardness tswj (max 22 HRC feem ntau), txwv chemistry (tsawg manganese, tswj sulfur), thiab kev kho cua sov tshwj xeeb(normalizing) los xyuas kom meej ib yam, zoo -grained microstructure.
2. Q: Vim li cas ASTM A333 Qib 6 tshwj xeeb yog siv rau qis -kev siv kub?
A: ASTM A333 Qib 6yog seamless / f welded carbon steel yeeb nkaballoyed nrog npib tsib xee (~ 3.5%). Nickel txhim kho qhov qis- qhov kub thiab txias cuam tshuam rau cov hlau, tiv thaiv kev tawg ntawm cov kev pabcuam qis li -50℃F (-45℃).
3. Q: Rau lub siab - hydraulic system, peb xav tau ib tug txias - kos seamless yeeb nkab nrog meej qhov ntev thiab ib tug du ID nto. Qib twg yog qhov raug?
A: ASTM A519 Qib 1020 lossis 1045yog ib yam rau txias -draw mechanical tubing. Cov txheej txheem kos duab txias muab qhov zoo tshaj plaws ua tiav, nruj qhov ntev kam rau ua, thiab muaj zog ntxiv. Qib 1020 muaj qhov zoo dua weldability, thaum 1045 muaj zog dua.
4. Q: Dab tsi ua rau ASTM A179 / A214 raj tsim nyog rau cov khoom siv hluav taws xob thiab cov kev pabcuam condenser?
A:Cov no yogqis- carbon steel raj (A179 seamless, A214 ERW). Lawv cov ntsiab lus qis carbon ua kom zoo heevductility rau lub raj expandingrau hauv cov ntawv raj, thiab lawv tau huv txaus rau kev hloov pauv cua sov hauv cov kev pabcuam xws li boilers thiab condensers.
5. Q: Peb xav tau qhov hnyav - cov yeeb nkab phab ntsa rau lub siab - siab reactor. Vim li cas peb thiaj xaiv ASTM A53 Qib F (nruam vuam) dua lwm qib?
A:Koj zoo liyuav tsis xaiv A53 Qib Frau qhov no. Qib F yog arauv-weldedcov yeeb nkab ua los ntawm skelp, nrog lub zog qis tshaj plaws. Nws tsis tsim nyog rau kev siv siab -siab.ASTM A106 Qib B lossis API 5L X42 / X52 PSL2hauv daim ntawv seamless yuav yog qhov kev xaiv raug rau hnyav- phab ntsa, siab - kev pabcuam siab.
