1.5D Sch40s n08810 DN 200 90 Degree Luj Tshib

Semi-tiav cov ntaub ntawv raw tiav ntawm Monel 400 threaded lauj tshib muaj zog thiab oxidation-resistant khoom

SCH40 monel 400 yeeb nkab raug xaiv raws li Werkstoff tus lej 2.4360 thiab tsis yog N04400. Alloy 400 cov kav hlau tseem hu ua monel aleloy 400 Yeeb Nkab, Monel 400 Yeeb & Nickel Alloy 400 Yeeb Nkab.

SMO 254 Cov kav dej tuaj yeem tiv taus cov kev ntxhov siab ntawm cov neeg muaj kev ntxhov siab thiab alloy 254 smo yeeb nkab siab ua haujlwm nyob rau hauv cov kub thiab xeb ib puag ncig.

Nws tseem yog tus nqi xaiv txiaj ntsig kom tsis muaj nqi tsawg dua, xws li hom 316, uas tsis muaj lub zog lossis corrosion tsis kam los txo cov nqi hauv lub neej hauv cov ntawv thov.

Stainless hlau al6xn uns unic n08367 ASTM B462 Stainless Hlau Phaj Flange
Nickel Alloy 600 ua haujlwm tau zoo nrog cov kev daws teeb meem feem ntau ntawm cov alkaline thiab cov neeg leej faj sib txuas thiab tseem muab cov tshuaj ntsuab qis los ntawm cov chlorine lossis hydrogen chloride.
Hloov Chaw Sib Tw Ntau thiab tsawg 350 lf2 steeel bar

Ib lub flange tuaj yeem ua ib lub phaj rau npog lossis kaw qhov kawg ntawm cov yeeb nkab. Qhov no yog hu ua tus dig muag flange. Yog li, flanges tau txiav txim siab yog nyob rau sab hauv cov khoom uas tau siv los txhawb lwm lub tshuab tshuab.

Inconel 718 yog npib tsib xee-chromium-based alloy uas feem ntau siv nyob rau hauv cov ntawv thov kub siab xws li aerospace thiab roj turbines. Ib qho ntawm cov tseem ceeb tshaj plaws hauv kev tsim cov astm b670 inconel 718 daim ntawv yog lub phaj dov. Muaj ob hom tseem ceeb ntawm inconel 718 daim hlau muaj nyob rau ntawm kev ua lag luam: kub dov thiab cov phiaj txias. Cov paib.

Cov thawj cov thawj cov khoom siv hluav taws xob rau Hastelloy C276 suav nrog cov hlau xws li Nickel, Molybdenum thiab chromium. Ntxiv rau peb cov hlau peb coals, Hastelloy C276 Fasteners kuj muaj tungsten ntxiv. Nws yog qhov paub zoo tias qhov sib ntxiv ntawm tungsten rau superalloys tuaj yeem txhim kho cov xeb tsis kam ntawm alloys hauv ntau qhov chaw hnyav.

Alloy 800 Weld Neck Flanges Peb muaj lub koob npe nrov hauv kev lag luam rau kev tsim cov hom kev ua haujlwm zoo uas yuav haum rau peb cov neeg siv khoom. Peb tsim khoom tsim prololoy 800 flanges uas muaj kev ntseeg siab thiab siab dua. Peb siv cov peev txheej hwm thiab qib siab tshaj tawm rau kev tsim ASTM B564 UNFANCES 800 flanges.

ASME B36.19M yog tus qauv kev qhia tshwj xeeb rau cov kav hlau stainless hlau, uas qhia txog kev ua siab ntev, thiab tsim khoom rau cov kav dej thiab cov txiv ntseej.
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab

Alloy 800 yog npib npib tsib xee-chromium alloy nrog siab zog thiab kev tiv thaiv zoo rau oxidation thiab corrosion ntawm qhov kub. ASTM B407 UNICS NC08800 INCOLOY 800 W. NR. 1.4876 Welded yeeb nkab yog dav siv rau kev tsim kho cov khoom siv uas yuav tsum tau ua rau corrosion tsis kam, lub zog, thiab ruaj khov rau kev pabcuam txog 1500 ° F (816 ° C).

Alloy 800 yog cov hlau-npib tsib xee-chromium alloy nrog lub zog nruab nrab thiab zoo tsis kam mus rau oxidation thiab carburization ntawm siab kub.

ASTM A105 (tseem hu ua Asme Sa 105) npog seamless forged carbon steel piping Cheebtsam ntawm kev siv hauv qhov kev pab cuam ntawm ambient thiab kev pab kub siab.

304 Piping spools yog tsim los ntawm 304 stainless hlau, ib qho khoom siv nrov thiab nrov tshaj plaws hauv ntau cov ntawv thov uas xav tau kev tiv thaiv kom xeb thiab oxidation. Cov kev tshaj lij no yog preooss siv cov machinery thiab cov txheej txheem tshwj xeeb, uas paub meej tias lawv muaj tseeb thiab ntseeg tau.

220. raj rau acier duplex
Cov ntsev ntsev no tuaj yeem txhim kho thaum hydrochloric acid los sib cuag nrog hlau thiab tooj liab. Yog li ntawd, yog tias cov khoom siv no ua ke nrog cov hlau lossis cov raj tooj liab hauv cov kab ke thiab cov khw muag khoom siv hydernoric tuaj yeem ua rau lub ntsej muag ua ntej ua ntej.

ASTM B564 UNRICS N08810 Qhov muag dig flanges incoloy 800 \ / 800Ht flanges yog cov roj hmab-hlau alloys uas npaj lub zog tsis kam thiab lub zog ntawm cov chaw hnyav. Cov flanges pom kev nthuav tawm cov superior tiv thaiv mus rau chloride kev ntxhov siab corrosion thiab crevice corrosion. Ntau dua, nws kuj qhia tau zoo tshaj plaws hauv kev xeb, kev nyuaj siab tawg thiab creepy). Lub vuam ntawm cov flanges no yog ua tiav siv ntau hom kev kawm xws li Mig, Tig thiab ntau dua.

Lub corrosion resistant Hastelloy alloys tau siv dav los ntawm kev lag luam ua lag luam. Qhov kev xav tau rau kev ua tau zoo ua rau lawv txoj kev lees paub thiab kev loj hlob hauv thaj chaw ntawm lub zog, kev noj qab haus huv thiab ib puag ncig, roj thiab cov roj thiab cov roj cuv khw desulfurization.

Qee qhov kev siv ntawm Duplex Stand qib 2205 yog kev tshawb nrhiav roj av, kev khaws khoom siv, cov tshuab roj av, cov pa roj ntsha, pulp, thiab cov ntawv digesers.

Hastelloy C2000 tub tshij yog siv nyob rau hauv ntau hom petrochemical suav nrog cov khoom siv tshuaj lom neeg, roj kev tsim khoom siv, roj ntxiv thiab cov nroj tsuag hluav taws xob.

Siab chromium, molybdenum thiab nitrogen cov ntsiab lus cuam tshuam nrog pitting tsis zoo rau cov medtenatent thiab corrosive corrosive conduction, thiab tseem ceeb pitting txias rau tag nrho cov xov xwm, thiab tseem ceeb pitting txias rau saum 50¡Ãc.

Inconel 600 Seamless Tubes ntawm cov qauv tsis ua N06600 thiab ASTM B167 yog cov uas tsim kom muaj kev tiv thaiv ntau dhau kev tiv thaiv dhau los.

Nilo Alloy 36, W.NR 1.3912, Tiv Thaiv 36% Nickel-Npib thiab muaj tus nqi ntawm kev nthuav dav ntawm cov hlau.

ASTM A815 S32205 Cov yeeb nkab fittings, Astm SA815 laujbows, Duplex 2205 yeeb nkab fittings, duplex yeeb nkab fittings, Duplex Stainless Hlau

800h tuaj yeem tiv thaiv corrosion ntawm ntau cov xov xwm corrosive. Nws cov ntsiab lus nickel siab ua rau nws tiv taus kev ntxhov siab corrosion tawg hauv aqueous corrosion. Lub siab chromium cov ntsiab lus muab cov txiaj ntsig zoo dua rau pitting thiab crevice corrosion tawg. Lub alloy muaj zoo corrosion tsis kam rau nitric acid thiab organic acids, tab sis muaj kev txwv corrosion tsis kam nyob rau hauv sulfuric acid thiab hydrochloric acid. Zoo corrosion tsis kam nyob rau hauv oxidizing thiab tsis-oxidizing ntsev, ntxiv rau qhov muaj peev xwm rau pitting corrosion hauv av. Nws tseem muaj cov zoo corrosion tsis kam nyob hauv dej, chav thiab sib tov ntawm Chav, huab cua thiab carbon dioxide.

Nickel alloys yog qee cov ntaub ntawv muaj txiaj ntsig zoo tshaj plaws rau kev tsim cov lag luam uas zoo tshaj thiab cov leeg rau kev siv cov ntawv thov kev lag luam. Lawv txoj kev thov ua kom lawv muaj peev xwm siv tau ntau yam kev siv. Nickel alloys yog qhov tshwj xeeb corrosion tiv taus thiab tuaj yeem siv rau hauv qhov chaw kub.

Lub 316 cov yeeb nkab stainless hlau tau dhau los ua cov khoom siv tsis tau rau cov kev lag luam lag luam. Qhov no alloy ntawm hlau thiab chrome tau lees paub rau nws lub siab tiv taus corrosion, nrog rau nws cov kav ntev. 316 Stainless hlau Tubing tuaj yeem tsim nyob rau hauv ob leeg seamless thiab welded leeg kom tau raws li cov neeg siv khoom xav tau.

Nickel alloy 400 thiab Monel 400, tseem hu ua UN tsis zoo li N04400, yog ib qho laj thawj ntawm cov menyuam yaus uas muaj feem ntau ntawm ob feem peb ntawm ob feem ntawm ob-tus tooj liab. Nickel Alloy 400 yog paub txog nws txoj kev tiv thaiv rau ntau yam ntawm cov kab mob ntawm cov xeb, suav nrog cov alkalis (lossis cov kua qaub), dej hli, thiab sulfuric acid. Txij li thaum Monel 400 lossis Alloy 400 yog cov hlau txias ua haujlwm, cov alloy muaj siab tawv, txhav thiab muaj zog. Los ntawm kev ua haujlwm txias ASTM B14400 Bar Tshuag, cov alloy yog raug rau cov kev ntxhov siab ntau dua, uas nyob rau hauv Alloy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Microy Micro ..

Thaum tsiv cov xov hluav taws xob siab los yog corrosive media los ntawm chrome alloy yeeb nkab los ntawm ib tus txheej txheem rau ib tug txheej txheem rau ib qho kev sib tw tom ntej, cov flanges muaj peev xwm tseem ceeb heev yog qhov tseem ceeb

Cov lauj kaub lauj kaub no muab cov kev pabcuam zoo rau kev hnyav ib puag ncig. Lub luj tshib yog siv los hloov cov kev taw qhia ntws ntawm nruab nrab ntawm 30 degrees.

Nws muaj peev xwm tiv thaiv ntau yam ntawm oxidizing thiab tsis-oxidizing tshuaj, thiab cov khoom ua kom pom tseeb zoo rau pitting thiab crevice nres nyob rau hauv muaj cov chlorides thiab lwm yam.

Yeeb nkab lossis cov raj yog khoov siv kev sib txuas ntawm tuag thiab lwm yam ntau yam ua haujlwm hauv kev ua haujlwm qeeb qeeb.

Duplex 2205 yog ferritic-austenitic stainless hlau. Cov nyiaj ntau ntawm Molybdenum thiab chromium cov ntsiab lus hauv 2205 cov yeeb nkab fittings muab lub zog, txhim kho pitting thiab kev ntxhov siab kev ntxhov siab corrosion. 2205 Pipe Fittings integrates the best features of austenitic and ferritic steels (as well as nearly equal amounts of austenite and ferrite) and can be welded with common stainless steel welding techniques – its uniform composition minimizes localized corrosion.

Duplex Stainless Hlau 2205 Yeeb Fittings - Zhengzhou Huitong Pipeline Equipment Co., Ltd.

Nickel-Tooj-based alloy 400 monel 2.4360 txias kos cov kab mob kev ntxhov siab thaum raug rau corrosive cracking thaum raug rau cov media corrosive nyob rau hauv ib puag ncig ib puag ncig. Monel 400 yog tooj liab thiab nickel raws li alloy uas nrov niaj hnub no vim nws qhov kev ua tau zoo. Lub alloy muaj kua qaub zoo heev thiab alkali tsis kam. Tsis tas li ntawd, nws muaj cov zog tensile muaj zog, ductility, zoo heev thermal condactivity, thiab tuaj yeem yog tawv los ntawm kev ua haujlwm txias. Ib qho ntxiv, nws tuaj yeem siv rau hauv cov ntawv thov nrog qhov kub thiab txias txij li rho tawm txog 538 degrees Celsius.

Stainless hlau yog ib qho alloy ntawm cov hlau uas tiv taus xeb. Nws muaj tsawg kawg yog 11% chromium thiab tej zaum yuav muaj cov ntsiab lus xws li carbon, lwm yam tsis yog lwm yam kom tau lwm yam uas xav tau. Stainless hlau qhov tsis kam rau corrosion tau los ntawm cov chromium, uas ua cov yeeb yaj kiab passive uas tuaj yeem tiv thaiv cov khoom thiab kho tus kheej nyob rau hauv lub xub ntiag ntawm oxygen.

316L 1.4401 tus yeeb nkab stainless hlau yog ib qho kev xaiv yeeb nkab zoo heev thiab cov yeeb nkab ruaj khov siv hauv ntau cov ntawv siv. Qhov no ss s31603 yeeb nkab yog tsim los ntawm cov hlau zoo 316L stainless ua rau corrosion, oxidation thiab staining rau cov chaw hnyav lossis kev siv ntxhov siab.

Qhov kev suav ntawm chromium imparts zoo corrosion distance rau Austenitic Qib 304. Txawm li cas los xij, raws li cov yeeb nkab stromium ua rau cov khoom siv sib txawv ntawm cov xov xwm.

Al6XN yog superaustenitic steel hlau nrog kev ua tau zoo rau chloride pitting, crevice corrosion thiab kev nyuaj siab corrosion tawg. Al6XN yog 6 Moly alloy uas tau tsim rau thiab siv hauv kev sib cav sib ceg siab. Nws muaj cov npib tsib xee (24%), Molybdenum (6.3%), nitriumen thiab chromium cov ntsiab lus tawg, thiab tshwj xeeb corrosion tiv thaiv. Al6XN yog feem ntau siv rau nws cov kev txhim kho pitting thiab crevice corrosion tsis kam hauv chlorides. Nws yog ib qho tsim nyog thiab weldable stainless hlau.

Chrome Molybdenum Qeb P11, P22, P91 thiab P91 thiab P92 yog siv rau hauv kev lag luam muaj zog. Chromium Molybdenum cov qib P5 thiab P9 yog siv hauv Petrochemical Refining cov txheej txheem. Chrome molybdenum forged fittings thiab flanges muaj nyob hauv cov qib f5, F9, F11, F91, F92. Chrome-Molybdenum Alloy Taub Qab Khaws Welded Yeeb Nkab Fittings muaj nyob hauv WP5, WP9, WP9, WP91, WP91, WP92 Qib. F11 thiab F22 cov ntaub ntawv ua raws li Nace-MRO 175.

Thiab ob qho loj steel 2205 cov yeeb nkab fittings muab khoom los ntawm HT cov yeeb nkab zoo li 220

Duplex2205 Wasters yog dual theem Austentic-Ferritic duplex fasteners thiab molybenum nrog rau cov roj carromium thiab molybenters muaj cov tshuaj tiv thaiv carrosion zoo thiab muaj zog.

Cov flanges no tau siv dav hauv ntau yam kev thov kev lag luam xws li roj av, tshuaj, kev tsim kho, roj av thiab ntau ntxiv.

Monel K500 Yeeb Nkab khoov thiab luj tshib muaj corrosion tsis kam nyob rau hauv ntau ntawm cov tub rog marine thiab tshuaj ib puag ncig. Los ntawm cov dej ntshiab kom tsis-oxidising ntxhia acids, ntsev thiab alkalis.

Txhawm rau kom xa cov raj xa dej, nws yog ib qho tsim nyog los tshem cov hose ncaj hauv cov raj xa dej. Thaum siv ntau lub raj xa dej, ntau yam kav dej yuav tsum tau siv. Thaum twg cov raj xa dej siv, lub luj tshib yuav tsum tau siv los hloov qhov loj ntawm cov raj xa dej. Thaum bifurcating, peb-txoj kev xaim cov flange kev sib txuas siv thaum lub raj xa hluav taws xob thiab kev sib txuas txias thiab kev sib tw txias thiab kev sib koom ua ke txias. , Hauv kev sib txuas ntawm ntau cov twj paj nruag, kuj tseem muaj cov txuas txuas thiab ntsaws ntawm cov twj paj nruag theem.

Npib tsib xee raws 800 incoloy hexagonal yeeb nkab yog paub kom muaj qhov zoo tiv taus corrosion. Tshwj xeeb hais txog kev hais lus, tus incoloy 800 yeeb nkab muaj txaus tiv taus ob carburization zoo li oxidation corrosion.

Incoloy 800H Flange Peb muaj lub koob npe nrov hauv kev lag luam rau kev tsim cov hom kev ua haujlwm zoo ntawm cov hom uas yuav tsum tau ua rau peb cov neeg siv khoom. Peb tsim khoom tsim prololoy 800 flanges uas muaj kev ntseeg siab thiab siab dua. Peb siv cov peev txheej hwm thiab qib siab tshaj tawm rau kev tsim ASTM B564 UNFANCES 800 flanges.

Lub Monel 400 alloy muaj ntau yam zoo tshaj plaws cov khoom siv, ua rau nws nto moo hauv cov yeeb nkab fittings. Monel 400 rab yeeb nkab fittings tuaj yeem muab kev ua tau zoo. Nws yog ib qho alloy ntawm npib tsib xee thiab tooj, nrog me me ntawm cov hlau, manganese, carbon, thiab cov ntsiab lus silicon. Cov tshuaj lom neeg muaj kuab lom ntawm alloy 400 yeeb nkab fittings ua rau nws lub zog siab. Cov chaw tshwj xeeb mitings fittings nyob rau hauv Is Nrias teb kuj muaj kev sib raug zoo ntawm cov yeeb nkab zoo tshaj plaws ntawm cov acids thiab alkalis yog qhov laj thawj tom qab ntawd. Lub alloy 400 Buteweld lauj tshib kuj tseem muaj cov qauv ua zoo, thermal conductivity, thiab lawv tsuas yog ua kom tiav los ntawm kev ua haujlwm txias.

ASTM A240 Hom 2205 Phaj yog lub Duplex phaj yog siv ntau yam kev lag luam xws li kev ua yeeb yam, roj thiab roj kev tshawb nrhiav, thiab marine engineering. Sa 240 gr 2205 daim ntawv yog tsim los ntawm qib 220) stainless hlau, uas yog kev sib xyaw ntawm ferritic thiab ustenitic steel.
Duplex 45 ° Elbows
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Duplex Steel Tuav & Rods
Qhov loj me "Od: 1 \ / 2" "~ 48" "
Suav (Tsoos)
Hlau Daim Phiaj & Cov Ntawv Qhia & Coils
Stainless hlau Flange Sa182 Bl Flange F304 Flange RF hauv Tshuag
Alloy Hlau Daim Hlau & Cov Ntawv Qhia & Coils

Yog tias 22CR Duplex yeeb nkab yog yuav tsum welded, tsis muaj cov muab tub lim hlau yuav tsum tau ntxiv rau lub alloy thaum nws cov txheej txheem vuam.

Tsis suav txog N08367 tseem hu ua Alloy Al6XN yog cov carbon ntau, siab purity, nitrogen-batoy nrog zoo heev rau chloride pitting thiab compevice corrosion.
Duplex 45 ° Elbows
htspipe.com
Indonesian
Lithuanian
DupleX Reducers
Duplex Steel Tuav & Rods
Qhov loj me "Od: 1 \ / 2" "~ 48" "
Suav (Tsoos)
Hlau Daim Phiaj & Cov Ntawv Qhia & Coils
Stainless hlau Flange Sa182 Bl Flange F304 Flange RF hauv Tshuag
A403 W316L Sch40S 45 90 degrees lr luj

Nickel 200 flanges lub npib tsib xee 200 flanges yog ruaj, tshuav ruaj khov, thiab muaj kev ua tiav zoo. Ntxiv mus, cov ASTM B564 tsis pom N02200 dig muag flanges tiv taus ib puag ncig hauv nruab nrab thiab oxidizing ib puag ncig, ua rau lawv zoo meej rau kev siv hauv cov khoom siv khoom noj khoom haus.

Hastelloy C2000 muaj nyob rau ntau qhov ntau thiab tsawg, hom no-lickel-molybdenum alloy muaj zog thiab corrosion tsis kam.

Caw 36 ® yog npib npib npib tsib xee, tsis muaj nyiaj npib ob leeg uas muaj 36%, commar 36 muaj qhov kub tsawg los ntawm kev nthuav dav ntawm + 500 ° F (260 ° C).

Txawm hais tias ntxiv cov ntsiab no, tsawg allolo steel flanges tsis tas yuav nyuaj rau Weld. Tus yuam sij kom ua tiav qhov ua tau zoo ntawm kev ua haujlwm vuam yog los ntawm kev paub raws nraim li cov hlau tsawg-alloy koj muaj.

Qhov no muab kev txhim kho zoo heev rau cov sulfuric acid. Nws kuj tseem muaj cov ntsiab lus chromium siab, kom ua kom zoo dua rau oxidizing tshuaj lom neeg cov tshuaj lom kabmob uas muaj kuab lom thiab yaj oxygen.

Steel flanges muab cov yooj yim rau kev ntxuav, kuaj lossis hloov kho. Lawv feem ntau tuaj hauv cov duab sib piv tab sis lawv tuaj yeem tuaj hauv cov ntawv square thiab duab plaub. Cov flanges tau koom nrog txhua lwm yam los ntawm kev sib koom tes los ntawm cov kav dej los ntawm vuam lossis xov thiab tsim rau cov kev ntsuas tshwj xeeb; 150LB, 300LB, 400LB, 600LB, 900lB, 1500lb thiab 2500lb.

ASTM A312 TP316 yog tus qauv txheem rau kev sib khi, ncaj-leeg welded, thiab hnyav txias welded ustenitic kav hlau stainless hlau thiab kev corrosive service. Lub 316 seamless muaj steel yeeb nkab yog tsim los ntawm kev sib xyaw ntawm cov chromium, npib tsib, thiab molybdenum ua rau corrosion thiab xeb thiab xeb thiab xeb thiab xeb.

Nws yog dav siv nyob rau hauv cov roj pov thiab roj kev tshawb nrhiav \ / ntau lawm thiab hauv kev hloov cua sov hauv petrochemical \ / tshuaj lom neeg.

Hastelloy B2 Yeeb Nkab khoov muab qhov zoo heev rau pitting corrosion thiab kev ntxhov siab ntsig txog corrosion tawg

Duplex yeeb nkab, Unicferry fittings, 220 cov yeeb nkab fittings, duplex yeeb nkab bends, duplex yeeb nkab, ruplex reducer, duplex reducer, duplex reducer, Duplex Reducer, Duplex Reducer, Duplex Reducer, Duplex Stub Kawg

Tsis pub dhau hauv cov kev lag luam tseem ceeb no koj tuaj yeem nrhiav Nickel Alloy 625 thiab Concolle Retor-Cores thiab tuaj yeem siv cov tshuab raj thiab cov khoom siv hneev nti thiab cov khoom siv hiav txwv oneyographic thiab lwm yam.

Tooj liab-Nickel Taub Qab Welded cov yeeb nkab fittings muaj kev ua haujlwm zoo, yog qhov yooj yim rau weld, thiab tsis rhiab rau kev ntxhov siab corrosion. Qhov no tuaj yeem siv rau kev sib koom ua ke lossis sib cais kua dej ntws. Nws yog T-puab nrog ob qho hluav taws xob, txuas rau ntawm 90¡Ã rau lub ntsiab kab. Cov haujlwm no suav nrog cov chaw ua noj, cov chaw nres nkoj, cov khoom ua tshiab, cryogenic nroj tsuag, roj ua thiab txawm nuclear lub zog ntoo.