20G:GB5310-95 tus qauv hlau txais (qib txawv teb chaws: Lub Tebchaws Yelemees ST45.8, Nyiv STB42, Tebchaws Meskas SA106B), yog cov yeeb nkab boiler steel feem ntau siv, cov tshuaj lom neeg thiab cov khoom siv kho tshuab thiab 20 phaj yeej zoo ib yam. Cov hlau muaj qee lub zog ntawm chav tsev kub thiab nruab nrab kub, cov pa roj carbon tsawg, zoo dua plasticity thiab toughness, nws qhov kub thiab txias tsim thiab vuam kev ua tau zoo. Nws yog siv rau hauv kev tsim cov siab siab thiab cov yam ntxwv siab dua ntawm boiler fittings, qis kub seem superheater, reheater, economizer thiab dej phab ntsa, thiab lwm yam. Xws li me me txoj kab uas hla phab ntsa kub ≤500 ℃ cua sov nto yeeb nkab, thiab dej phab ntsa yeeb nkab, economizer raj, loj txoj kab uas hla phab ntsa kub ≤450 ℃ pa yeeb nkab, sau lub thawv (economizer, dej phab ntsa, qis kub superheater thiab reheater coupling lub thawv), nruab nrab kub ≤450 ℃ pipeline accessories. Vim tias cov hlau carbon yuav tsim cov graphitization hauv kev ua haujlwm ntev tshaj 450 ℃, yog li qhov kub siab tshaj plaws ntawm cov kav dej kub yog qhov zoo tshaj plaws txwv rau hauv qab 450 ℃. Cov hlau hauv qhov kub no, nws lub zog tuaj yeem ua tau raws li qhov xav tau ntawm superheater thiab cov kav dej pa, thiab muaj kev tiv thaiv oxidation zoo, plasticity, toughness, vuam khoom thiab lwm yam khoom ua haujlwm txias thiab kub zoo heev, siv dav. Cov khoom ntawm cov hlau siv hauv Iranian cub tawg (xa mus rau ib pawg) yog cov kav dej nkag (28 tons), cov kav dej nkag (20 tons), cov kav dej txuas (26 tons), lub thawv economizer (8 tons), thiab lub kaw lus txo dej (5 tons), thiab lwm yam yog siv ua cov hlau tiaj tus thiab cov khoom siv derrick (kwv yees li 86 tons).

Sa-210c (25MnG): Tus lej hlau hauvASME SA-210tus qauv. Nws yog ib lub raj me me uas ua los ntawm cov hlau carbon manganese rau cov boilers thiab cov superheaters, thiab yog cov hlau kub muaj zog nrog cov duab zoo li hlaws. Xyoo 1995, nws tau hloov mus rau GB5310 thiab hu ua 25MnG. Nws cov tshuaj lom neeg muaj pes tsawg leeg yooj yim, tsuas yog cov pa roj carbon thiab manganese ntau dua, qhov seem zoo ib yam li 20G, yog li lub zog tso zis yog li 20% siab dua 20G, thiab cov yas thiab kev tawv zoo ib yam li 20G. Cov txheej txheem tsim cov hlau yog yooj yim thiab nws qhov kev ua haujlwm txias thiab kub zoo. Siv nws es tsis txhob 20G, tuaj yeem txo qhov tuab ntawm phab ntsa, txo cov khoom siv, tab sis kuj tuaj yeem txhim kho qhov hloov pauv cua sov ntawm lub boiler. Nws cov khoom siv thiab qhov kub siv yog qhov zoo ib yam li 20G, feem ntau siv rau qhov kub ua haujlwm qis dua 500 ℃ phab ntsa dej, lub tshuab txuag hluav taws xob, lub tshuab cua sov kub qis thiab lwm yam khoom.
Sa-106c: Nws yog tus lej hlau hauvASME SA-106Tus qauv. Nws yog ib lub raj hlau carbon-manganese rau cov boilers loj thiab cov superheaters uas muaj qhov kub siab. Nws cov tshuaj lom neeg yooj yim, zoo ib yam li 20G carbon steel, tab sis cov ntsiab lus ntawm carbon thiab manganese siab dua, yog li nws lub zog tso zis yog li 12% siab dua 20G, thiab cov yas, toughness tsis phem. Cov txheej txheem tsim cov hlau yog yooj yim thiab nws qhov kev ua haujlwm txias thiab kub zoo. Siv nws es tsis txhob 20G manufacturing collector (economizer, phab ntsa txias dej, superheater kub qis thiab reheater coupling box), lub phab ntsa thickness tuaj yeem txo tau li 10%, uas tsis tsuas yog txuag tau cov nqi khoom siv, tab sis kuj txo qhov vuam workload, thiab txhim kho qhov sib txawv ntawm kev ntxhov siab thaum lub thawv coupling pib.
15Mo3 (15MoG) : Nws yog cov yeeb nkab hlau hauv DIN17175 tus qauv. Nws yog lub raj hlau carbon molybdenum me me rau boiler thiab superheater, thiab yog hom pearlescent kub zog hlau. Xyoo 1995, nws tau hloov mus rau GB5310 thiab hu ua 15MoG. Nws cov tshuaj lom neeg muaj pes tsawg leeg yooj yim, tab sis nws muaj molybdenum, yog li nws muaj zog thermal zoo dua li cov hlau carbon thaum tswj cov txheej txheem ua tau zoo ib yam li cov hlau carbon. Vim nws qhov kev ua tau zoo, tus nqi pheej yig, tau siv dav hauv ntiaj teb. Txawm li cas los xij, cov hlau muaj qhov nyiam graphitization tom qab ua haujlwm ntev ntawm qhov kub siab, yog li nws qhov kub ua haujlwm yuav tsum tswj tau qis dua 510 ℃, thiab qhov ntau ntawm Al ntxiv rau hauv smelting yuav tsum txwv rau kev tswj thiab ncua cov txheej txheem graphitization. Cov yeeb nkab hlau no feem ntau yog siv rau qhov kub qis superheater thiab qhov kub qis reheater. Qhov kub ntawm phab ntsa qis dua 510 ℃. Nws cov tshuaj lom neeg muaj pes tsawg leeg C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Lub zog ib txwm muaj σs≥270-285, σb≥450-600 MPa; Yas delta 22 lossis siab dua.