ASTM A312 TORP36 seamless muaj steel yeeb uns s31600 smls steel yeeb nkab

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.

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.

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.

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.

ASTM A312 \ / A312M, Txheem Cov Qauv, Welded Austenitic Stainless Hlau, thiab tsim cov khoom siv ntawm welded thiab seamless hom.

Qhov haum ntawm ASTM A105 qib yog tsim nyob rau hauv seamless forged steel hlau specification. ASTM A105 fittings yog tsim nrog cov ntsiab lus tshuaj ntawm npib tsib xee, chromium, molybdenum, tooj liab, thiab vagadium. Cov kev pab haum rau txuas rau cov piping sib txawv hauv cov roj thiab roj kev lag luam.

Lub hauv paus ntsiab lus DI?

SAE 310 Stainless hlau yog ib tug heev alloyed Austenitic stainless hlau siv rau cov ntawv thov kub siab. Lub siab chromium thiab npib tsib xee cov ntsiab lus muab cov hlau ua kom zoo heev oxidation tiv taus raws li lub zog siab ntawm qhov kub siab. Qeb no kuj tseem du ntau ntxiv, thiab muaj qhov zoo weldability ua rau txoj kev siv thoob plaws hauv ntau daim ntawv thov

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.

Cov phiaj nruab nrab thiab hnyav kav hlau xa mus rau cov phaj hlau nrog lub thickness ntau dua 3 hli thiab tsawg dua 50 hli. Nruab nrab thiab tuab cov hlau hlau feem ntau yog siv nyob rau hauv nkoj shrbuilding, boilers, choj
S32750 SUP SUPLEX Coil Kub Exchanger 1.4410 1.4501 Chev

A335 Gr P22 Seamless cov yeeb nkab yog yooj yim rau nruab raws li qhov ntev yog qhov tseeb heev. Nws tuaj yeem siv nrog lwm A335 Gr P22 alloy yeeb nkab thiab cov fittings.

1.4307 stainless hlau 304L yeeb nkab cov khoom siv & tawm lub zog
Cov phiaj tuab hlau xa mus rau cov phaj hlau nrog lub thickness ntau dua millimeters. Tuab steel phaj tau muab faib ua cov phaj tuab ntxiv thiab nruab nrab-tuab hlau phaj.
Tsim cov qauv ASME B36.10 ASME B36.36

tshuab, kho kom zoo nkauj thiab lwm yam.
Suav (Tsoos)
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.
Inconel 600 Yeeb Nkab Antioxidant

Tsau-nthuav dav iav-encapsulated girapsulated alloys, muaj ib qho kev nthuav dav thermal, muaj ib lub khob hluav taws xob nthuav dav zoo ib yam li qhov ntsuas kub

yog tsim tawm yam uas tsis muaj cov kev xav tau ntawm fillets lossis vuam. Cov kav dej no muaj zog heev thiab me ntsis kim vim cov ntaub ntawv siv hauv lawv cov khoom lag luam. 

A335 cov yeeb nkab yog cov tiv taus zoo ntawm qhov kub thiab txias thiab siab. Chromium Molybdenum leeg nrog kev tiv thaiv rau hydrogen tawg thiab sulfide kev nyuaj siab corrosion yog zoo dua rau cov hlab roj carbon monoxide.

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).

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.

ASTM B564 Nickel Alloy 200 muaj cov nickel alloy 200 muaj qee yam khoom zoo, uas tau ua nws nto moo hauv ntau yam kev lag luam. Tus Nickel 200 flanges yog ruaj, tshuav ruaj khov, thiab muaj qhov 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. Peb yog tus tshwj xeeb Nickel 200 Flange Chaw tsim tshuaj paus nyob hauv Suav teb uas tsim cov flanges ntawm cov qib thiab ntau thiab tsawg rau cov kev xav tau ntawm cov neeg siv khoom. Peb pawg kws tshaj lij ntawm cov kws tshaj lij kev saib xyuas cov txheej txheem ntawm kev tsim npe Nickel 200 Slip ntawm cov raug thiab qhov zoo. Lawv tseem ua cov ntawv pov thawj kev pov thawj kom ntseeg tau tias cov khoom lag luam ua ntej xa nws mus rau cov neeg siv khoom.

Qhov qis dua cov ntsiab lus ntawm 304L alloy pab txo qis \ / tshem tawm carbide nag lossis daus thaum lub sij hawm vuam. Qhov no tso cai rau 304L stainless hlau kom raug siv "raws li welded", txawm nyob rau hauv ib puag ncig corrosive. Yog tias koj siv tus qauv 304 stainless hlau nyob rau hauv tib txoj kev, nws yuav txwv sai ntawm welded pob qij txha.

Cov phaj steel feem ntau siv rau cov txheej txheem qauv thiab kev tsim kho, cov hlab ntsha, cov nkoj siab, cov khoom siv uas muaj caj dab, thiab cov ntawv thov tub rog. Cov qib, cov ntsiab thiab cov tsis muaj ntawm cov phaj steel kuj tseem ceeb hauv nws siv li cas.

yog qis dua cov roj av variant ntawm 304 stainless hlau siv qhov twg vuam yuav tsum muaj. Cov ntsiab lus txo cov ntsiab lus txo qis carbide nag lossis daus nyob rau hauv lub tshav kub-cuam tshuam rau kev sib cav sib ceg (weld yaig) ntawm stainless hlau nyob rau hauv ib qho chaw ib puag ncig.

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

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).

Cov qib no tau nce nws cov qauv qub thiab sib tshooj ua pov thawj pab tau lwm cov ntawv thov, uas tso cai rau cov khoom siv uas muaj kev zam rau hauv ntau yam li cov khoom siv

Yog cov pa roj carbon tsawg tsawg ntawm nws cov niam txiv I.E. OLPANO LAWV LAWM

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

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.

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.

Cov phiaj hlau nyias nyias yog cov phiaj hlau nrog cov phiaj tuab ntawm 0.2-4m

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.

Featuring 304 Stainless Hlau Rau Heev Zoo Corrosion, Qhov kev pom zoo Weld Neck Flange tuaj yeem txuas nrog lub kaw lus weld ntawm lub caj dab. Welded thaj chaw tuaj yeem raug tshuaj xyuas yooj yim los ntawm radiography. Matched yeeb nkab thiab Flange Bore txo cov cua hlob thiab kev yaig hauv raj dej. Flange yog zoo heev rau siv nyob rau hauv koj daim ntawv thov tseem ceeb thiab yog qhov zoo rau siv nrog huab cua, dej, roj, nkev, thiab chav dej.

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.

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.

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.
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.
2205 Duplex Stainless hlau yog ntau tshaj ob npaug ntawm cov tib yam ntawm cov hlau tsis muaj txiaj ntsig. Cov xeeb ceem no tso cai cov tsim qauv los txo qhov hnyav thaum tsim cov khoom lag luam, muab cov ntaub ntawv no kom zoo dua 316,317L.
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.
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.

304l stainless kav hlau, 03Txhom182011 AISI 304L kav dej ntawm stainless hlau ASTM txias kos yeeb nkab, 304L Khoom noj khoom haus cov kav hlau Stainless. SS 304L RACK RACK, SA312 CURPENOPOLISHISE PIPES hauv Suav teb.
ASTM A213 Tp336L raj
Hlau Ntsiav
www.oepip.com
Luxembourgish
Steel yeeb nkab fittings
Rau mating sealing nrog cov iav nyuaj
Qhov loj me "Od: 1 \ / 2" "~ 48" "
Ntaus "yeeb nkab seamless
Tsim cov qauv ASME B36.10 ASME B36.40
Cov npe lag luam sib xws: Nickel Alloy 36®, Nilo 6®, Pernifer 6®
Zhengzhou Huitong Pipeline Equipment Co., Ltd.

(S30400), 304L (s30403), thiab 304H (s30409) yog ob peb hom ntawm ib qho kev sib txawv, muaj ntau yam thiab siv ntau yam hauv tsev neeg stainless. Vim tias cov alloys muaj ib lossis ntau yam ntawm cov khoom hauv qab no, lawv tuaj yeem siv tau ntau yam kev siv.

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.

Lub kauj ruam dual steel \ / super ruplex yeeb nkab steel hlau stainless hlau yog lub zog ntawm cov hlau tsis muaj roj stainless hlau. Feem ntau, thaum cov pa roj carbon cov ntsiab lus yog tsawg, cov ntsiab lus crush yog 18% ~ 28%, thiab NI cov ntsiab lus yog 3% ~ 10%. Qee cov hlau kuj tseem muaj MO, CU, NB, NB, N thiab lwm cov khoom alloy.

Cov phiaj hlau hlau feem ntau yog cov hlau nplaum, txias lossis siv cov hlau txias lossis kub-dov stem stember nrog steel qib B0-B3. Yuav tsum muaj rau cov phaj nyias steel: du, du nto, tuab

Duplex (unsom s31803 \ / s32205) pas nrig, tseem hu ua cov pas nrig steel (ASTM A276 \ / ANTM A479), muaj cov tshuaj tiv thaiv corrosion. Stainless hlau Rods \ / stainless hlau rods (en 1.4462) tiv taus intergranular thiab crevice corrosion.

phaj. Mas siv nyob rau hauv Changlin Dongfeng cov kiv cua, cov khoom siv hluav taws xob, cov tshuab hluav taws xob, cov khoom siv ua liaj ua teb, rooj tog, cov tog steel, thiab lwm yam.

Hastelloy C-276 Fasteners thiab lwm yam khoom hauv tsev neeg haastelloy muaj kev tiv thaiv zoo heev rau corrosion thiab oxidizing thiab txo tshuaj lom neeg. Vim nws txoj kev yoog tau, haastelloy c-276 alloy tuaj yeem siv tau rau hauv cov chaw teeb meem thiab feem ntau yuav tshwm sim hauv cov txheej txheem cheeb tsam. Hauv Hastelloy C276 hex bolts, cov ntsiab lus chromium tau nce txog 21% thiab cov ntsiab lus Molybdenum yog txo kom txog 13%. Hastelloy C276 Hnyav Haujlwm Hex Bolts kuj muab qhov zoo tiv thaiv mus rau ib puag ncig pom hauv kev txo qis thiab oxidizing tej yam kev mob hauv cov txheej txheem dej.

UNR UNS UNR UNS UNR UNS UNR UNR UNROMST S32760 (F55, 1.4501) Yog lub siab Alloy Super Duplex stainless hlau tsuas yog siv nyob rau hauv ntau ib puag ncig corrosive ib puag ncig. S32760 muaj lub zog muaj zog thiab corrosion tsis kam thiab yog siv rau hauv kev ua yeeb yam siv, petrochemical thiab cov khoom siv yav dhau los.

Lub siab Molybdenum Superaustenitic nrog kev ua tau zoo rau chloride pitting, crevice corrosion thiab kev nyuaj siab corrosion tawg. Haum rau kev siv hauv plawv hniav cov zaub ntsuab, nroj tsuag dej kom cua sov thiab cov khoom siv txheej txheem tshuaj lom neeg.

A789 unc unic s31803 thiab unspes ob qib ntawm ob chav stainless hlau uas tau siv dav hauv ntau cov ntawv thov. Cov txiv neej duplex s31803 Seamless kav yog paub rau lawv cov txiv neej ua hauj lwm zoo, muaj lub zog siab, thiab weldability thiab zoo weldability. A789 yog ib qho tshwj xeeb uas tau them seamless thiab welded tub ua los ntawm duplex steel stainless hlau.

Ams 5754 Cov yeeb nkab khoov tsis muaj txiaj ntsig los yog tensile lub zog yuav tsum tau ua, tab sis nws yuav tsum muaj qhov tsawg kawg nkaus tsawg thiab kev ntxhov siab.

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.

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.
ASTM A213 Tp336L raj
Hlau Ntsiav
www.oepip.com
Luxembourgish
Steel yeeb nkab fittings
Rau mating sealing nrog cov iav nyuaj
Qhov loj me "Od: 1 \ / 2" "~ 48" "
Ntaus "yeeb nkab seamless
Tsim cov qauv ASME B36.10 ASME B36.40
Cov npe lag luam sib xws: Nickel Alloy 36®, Nilo 6®, Pernifer 6®
A789 undist s31803 thiab unsamless tubing

Hastelloy C-276 muaj nyob rau hauv daim phaj, sawb, lab, xaim, cov yeeb nkab, cov yeeb nkab, flanges, fittings.

Lub ntsiab Cheebtsam ntawm 304 stainless hlau¡ªide Los ntawm Hlau¡ªare Chromium thiab Nickel. 304 muaj 18 - 20% chromium (CR). Chromium yog ib qho tseem ceeb rau txhua tus hlau, nws tsim cov txheej uas passivation nyias uas ua rau cov hlau "stainless"

Ntxiv-tuab hlau phaj hais txog ib lub phaj steel nrog lub thickness ntawm tsis tsawg tshaj li 50 hli. Cov hlau ntxiv-tuab yog siv nyob rau hauv lub nkoj nkoj, boilers, choj thiab high-siab vessel plhaub
ASTM A213 Tp336L raj
Hlau Ntsiav
www.oepip.com
Luxembourgish
Steel yeeb nkab fittings
Rau mating sealing nrog cov iav nyuaj
Qhov loj me "Od: 1 \ / 2" "~ 48" "
Ntaus "yeeb nkab seamless
Tsim cov qauv ASME B36.10 ASME B36.40
Cov npe lag luam sib xws: Nickel Alloy 36®, Nilo 6®, Pernifer 6®
A234 WP22 ASME B16.5 Cov Hlau Hlau Haum CPAS

Monel 400 Tsis Muaj N04400 Tube khoov nrog zoo heev rau sai sai ntws brackish dej lossis dej hiav txwv

Alloy 317l muaj cov tshuaj tiv thaiv corrosion zoo heev nyob rau hauv ntau yam tshuaj lom neeg. Nws tsis kam tawm tsam hauv sulfuric acid, acidic chlorine thiab phosphoric acid.

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.

Inconel 600 puag ncig bar yog npib tsib xee-raws li benign carburization thiab zoo heev corrosion thiab kub heev. Inconel 600 cov khoom sib txuas ua haujlwm tiv thaiv kom qhuav cl2 thiab ntau lwm cov roj sib txawv ntawm cov mob me thiab kub. Alloy 600 Bar yog npib tsib xee-chromium alloy nrog zoo oxoidation decomposition decomposition decomposition thiab acid oxidation ntawm ntug dej kub.

Nyias steel phaj hais txog ib lub phaj steel nrog ib tuab ntawm tsis ntau dua 3 hli. Cov feem ntau siv nyias hlau phaj tuab yog 0.5-2mm, uas tau muab faib ua ntawv thiab steeilation. Nyias

Titanium lub ntom yog li 60% uas ntawm stainless hlau thiab nickel alloys, qhov hnyav no txuag ua rau nws xaiv qhov chaw zoo uas yog qhov tseem ceeb xws li aerospace.

tuaj yeem siv rau hauv ib puag ncig corrosive. Lawv muaj nyob rau hauv cov caij nyoog sib txawv thiab cov phab ntsa thicknesses kom haum rau cov kev xav tau ntawm peb cov neeg siv khoom. Tsim los ntawm kev koom nrog cov hlau ua ke, tus 
Alloy Hlau Yeeb Nkab & Tube
Hlau Ntsiav
www.oepip.com
Luxembourgish
Steel yeeb nkab fittings
Rau mating sealing nrog cov iav nyuaj
ASTM A240 Hom 2205 Phaj Stockholder Sa 240 Gr 2205 Ntawv
Ntaus "yeeb nkab seamless
Tsim cov qauv ASME B36.10 ASME B36.40

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.