20G:GB5310-95 chitsulo chovomerezeka chovomerezeka (kalasi yofananira yakunja: ST45.8 yaku Germany, STB42 yaku Japan, United States SA106B), ndiye chitoliro chomwe chimagwiritsidwa ntchito kwambiri pa boiler zitsulo, kapangidwe kake ndi zinthu zamakina ndi mbale 20 ndizofanana. Chitsulocho chimakhala ndi mphamvu zina pa kutentha kwa chipinda ndi kutentha kwapakati, kutsika kwa carbon carbon, pulasitiki bwino ndi kulimba, kutentha kwake ndi kuzizira kupanga ndi kuwotcherera ndi ntchito yabwino. Amagwiritsidwa ntchito kwambiri popanga zopangira zowotchera kwambiri komanso magawo apamwamba a zovekera zowotchera, gawo lotsika la kutentha kwapamwamba, reheater, economizer ndi khoma lamadzi, etc. Monga kutentha kwa chitoliro chaching'ono cha khoma ≤500 ℃ Kutentha pamwamba pa chitoliro, ndi chitoliro chamadzi, chubu cha economizer, chitoliro chachikulu cham'mimba mwake kutentha kwa khoma ≤450 ℃ payipi ya nthunzi, bokosi lotolera (economizer, khoma lamadzi, kutentha kwapamwamba kwambiri ndi bokosi lolumikizirana), kutentha kwapakati ≤450 ℃ Chalk mapaipi. Chifukwa mpweya zitsulo adzatulutsa graphitization mu ntchito yaitali pamwamba 450 ℃, kotero kwa nthawi yaitali pazipita ntchito kutentha kwa Kutentha pamwamba chitoliro bwino malire m'munsimu 450 ℃. Chitsulo mu osiyanasiyana kutentha, mphamvu yake akhoza kukwaniritsa zofunika za superheater ndi nthunzi payipi, ndipo ali wabwino makutidwe ndi okosijeni kukana, plasticity, toughness, katundu kuwotcherera ndi zinthu zina ozizira ndi otentha processing ndi zabwino kwambiri, ankagwiritsa ntchito. Zigawo za zitsulo zomwe zimagwiritsidwa ntchito mu ng'anjo yaku Iran (kutanthauza seti imodzi) ndi chitoliro cholowetsa madzi (matani 28), chitoliro cholowera madzi (matani 20), chitoliro cholumikizira nthunzi (matani 26), chidebe cha economizer (8). matani), ndi njira yochepetsera madzi (matani 5), ndipo zotsalazo zimagwiritsidwa ntchito ngati chitsulo chathyathyathya ndi zida za derrick (pafupifupi matani 86).

Sa-210c (25MnG) : Nambala yachitsulo mkatiASME SA-210muyezo. Ndi chubu chaching'ono chachitsulo cha carbon manganese chopangira ma boilers ndi ma superheaters, komanso chitsulo chotentha champhamvu chokhala ndi mawonekedwe a ngale. Mu 1995, idasinthidwa kukhala GB5310 ndikutchedwa 25MnG. Mapangidwe ake a mankhwala ndi ophweka, kupatulapo carbon ndi manganese apamwamba kwambiri, ena onse ndi ofanana ndi 20G, kotero mphamvu zokolola zimakhala pafupifupi 20% kuposa 20G, ndipo pulasitiki ndi kulimba ndizofanana ndi 20G. Njira yopangira zitsulo ndi yosavuta ndipo ntchito yake yozizira ndi yotentha ndi yabwino. Kugwiritsa ntchito m'malo mwa 20G, kumatha kuchepetsa makulidwe a khoma, kuchepetsa kuchuluka kwa zinthu, komanso kumatha kusintha kutentha kwa boiler. Zigawo zake zogwiritsira ntchito ndi kutentha kwa ntchito ndizofanana ndi 20G, zomwe zimagwiritsidwa ntchito kwambiri kutentha kwapansi pa 500 ℃ khoma lamadzi, economizer, kutentha kwapamwamba kwambiri ndi zina.
Sa-106c: Ndi nambala yachitsulo mkatiASME SA-106muyezo. Ndi chubu chachitsulo cha kaboni-manganese cha ma boiler otentha kwambiri okhala ndi m'mimba mwake ndi ma superheaters. Mankhwala ake ndi osavuta, ofanana ndi 20G carbon steel, koma zomwe zili mu carbon ndi manganese ndizokwera kwambiri, choncho mphamvu zake zokolola zimakhala pafupifupi 12% kuposa 20G, ndipo pulasitiki, kulimba sikuli koipa. Njira yopangira zitsulo ndi yosavuta ndipo ntchito yake yozizira ndi yotentha ndi yabwino. Kugwiritsa ntchito m'malo mwa 20G kupanga otolera (economizer, madzi kuzirala khoma, otsika kutentha superheater ndi reheater lumikiza bokosi), khoma makulidwe akhoza kuchepetsedwa pafupifupi 10%, amene sangathe kupulumutsa chuma mtengo, komanso kuchepetsa kuwotcherera ntchito, ndikusintha kusiyana kwa kupsinjika pamene bokosi lolumikizira likuyamba.
15Mo3 (15 mog): Ndi chitoliro chachitsulo mu DIN17175 muyezo. Ndi chubu chaching'ono cha carbon molybdenum chitsulo chowotchera ndi chotenthetsera chambiri, komanso mtundu wa ngale yachitsulo champhamvu yotentha. Mu 1995, idasinthidwa kukhala GB5310 ndikutchedwa 15MoG. Mankhwala ake ndi osavuta, koma ali ndi molybdenum, choncho amakhala ndi mphamvu zowonjezera kuposa carbon steel pamene akugwira ntchito mofanana ndi carbon steel. Chifukwa cha ntchito zake zabwino, mtengo wotsika mtengo, wakhala ukugwiritsidwa ntchito kwambiri padziko lapansi. Komabe, chitsulocho chimakhala ndi chizolowezi cha graphitization pambuyo pogwira ntchito kwa nthawi yayitali pa kutentha kwakukulu, kotero kutentha kwake kuyenera kuyendetsedwa pansi pa 510 ℃, ndipo kuchuluka kwa Al kuwonjezeredwa mu smelting kuyenera kuchepetsedwa kuwongolera ndi kuchedwetsa ndondomeko ya graphitization. Chubu chachitsulo ichi chimagwiritsidwa ntchito kwambiri pakutentha kwapamwamba kwambiri komanso kutentha kocheperako. Kutentha kwa khoma kuli pansi pa 510 ℃. Mankhwala ake opangidwa ndi C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Mphamvu yanthawi zonse σs≥270-285, σb≥450-600 MPa; Pulasitiki Delta 22 kapena kupitilira apo.