Tiv Tauj Peb

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.

Ansi B16.5 Alloy C2000 Txo Flanges Thoob Ntiaj Teb Thoob Ntiaj Teb
Ntau yam ntawm stainless hlau flanges yog tag nrho cov yeeb nkab, suav nrog weld caj dab, tshij weld, ceg tawv, thiab hub dig muag.
stainless hlau cov hniav nyiaj hniav kub 316 yeeb nkab

Incoloy 800 Fasteners Tiv Thaiv Oxidation thaum kub, muaj teeb meem nrog feem ntau stainless hlau alloys. Fasteners ua los ntawm Incoloy 800 kuj tseem muaj kev xav tau zoo hauv petrochemical thiab kev ua yeeb yam. Txawm tias thaum raug rau kub heev, incoloy 800H fasteners tswj cov qauv ruaj khov, ua rau lawv tau ua tiav thiab nrhiav tau tom qab hauv ntau qhov kev lag luam.

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.

Monel 400 yog siv nyob rau hauv cov nkoj cov nkoj, cov roj cua sov ua kom sov, thiab roj av thiab cov tso kua mis ntim khoom hauv marine sector. Cov khoom uas tsis yog sparking ntawm no alloy ua nws haum rau cov xwm txheej pheej hmoo ntawm cov kev lag luam tawg, Rockets thiab cov khoom lag luam thiab cov ntawv lag luam.

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.

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.

Monel alloy 400 threaded flanges yog haum nrog kav dej nrog xov. Cov txiv neej xov rau ntawm cov yeeb nkab xaus haum nrog rau cov poj niam xov ntawm cov xov flanges. Tus Asme SB564 alloy 400 lub qhov (weld flanges feem ntau welded rau cov kav dej.

Inconel yeeb nkab yog ua los ntawm cov khoom uas tau ua kom zoo rau qee qhov kev siv hnyav tshaj plaws yuav tsum pom kev tsim khoom. Txawm hais tias piv rau stainless hlau, inconel muaj qhov siab heev rau siab rau cov cua sov, thiab tsis poob ntau ntau yam ntawm cov hlau.

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
254 smo yeeb nkab fabrication tshwj xeeb qib ntawm cr

Duplex txiv ntoo s31803 tseem muaj cov qaug zog zoo thiab corrosion tsis kam nyob rau hauv feem ntau ib puag ncig ib puag ncig.

ASTM A234 WPB Luj tshib yog ib qho ntawm cov qauv siv cov yeeb nkab uas nyiam tshaj plaws. Ib lub luj tshib yog qhov sib txuas zoo li lub luj tshib thiab tso cai rau kev hloov pauv ntawm cov kua dej ntws tawm.

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.

Nws ua rau pom zoo tsis kam mus rau nruab nrab thiab txo qhov chaw. Cov alloy no tsim ib zaj yeeb yaj kiab oxide, kev tiv thaiv zaj duab xis uas tsis tawm mus, tab sis nws khaws cov oxidation superi-sauv tsis kub.

Alloy Steel yog cov hlau sib cais los ntawm kev ntxiv ntau hom ntawm cov ntsiab lus nrog tag nrho cov nyiaj ntawm 1.0% thiab 50% txhawm rau txhim kho nws cov khoom siv. Alloy Steel tau muab faib ua ob pawg: cov hlau tsis tshua muaj hlau thiab cov hlau loj. Qhov sib txawv ntawm ob yog kev debatable. Smith thiab Hashemi txhais qhov txawv li 4.0%, thaum degarmo li al. txhais qhov txawv li 8.0%. Feem ntau, cov kab lus "alloy steel" yog hais txog cov hlau tsis tshua muaj hlau.

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).

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.

Yeeb Nkab Spools Fabrication
Cov ntsiab lus tseem ceeb hauv 304 yog chromium thiab npib tsib xee, uas muab nws zoo heev corrosion. Nws muaj zoo corrosion tsis kam, yog ducile thiab condile thiab condile, thiab muaj kev weldability zoo. Tus qauv Austenitic tso cai sib sib zog nqus duab yam tsis muaj nyiaj nruab nrab.

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.

Ib lub flange yog lub nplhaib ntawm cov hlau (forged, txiav los ntawm phaj, lossis koom nrog cov yeeb nkab ntawm cov yeeb nkab, lossis los koom nrog cov hlab ntsha, lossis mus ua ke lossis lwm qhov chaw sib dhos. Flanges tau koom nrog txhua lwm yam los ntawm kev siv pas dej los ntawm vuam los yog xov (lossis xoob thaum cov quav xaus yog siv). Stainless hlau Flange Tau yooj yim raws li ss flange, nws yog hais txog cov flanges uas ua los ntawm stainless hlau. Cov qauv qauv ib txwm muaj thiab qib AN182% F304 \ / L thiab / L thiab / / /50.

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.

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 ..

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.

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.

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.

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.

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.

Hastelloy B2 yog lub pob zeb npib tsib xee wring alloy nrog zoo heev tiv taus rau hydrochloric acid ntawm txhua qhov siab thiab kub.

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.

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.

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.

Cov txiaj ntsig ib lub zog ntawm cov khoom no yog yuav luag ob zaug uas ntawm feem ntau siv autusenitic steel qib.
Pom lsaw erw EFW
S31600 YEEB NKAB
Nyab laj
Belarusian
www.oepip.com
Seamless steel yeeb nkab thiab raj
Nickel Alloy Daim Hlau & Cov Ntawv Qhia & Coils
Nickel Alloy Flanges
ASME B36.19M Stainless Hlau Yeeb Nkab
ASTM A403 Stainless Hlau Asme B16.9 45 90 degrees luj
Monel 400 YEEB RAU COV FRESE rau EYEARLASSES

Cov kav dej ntawm seamless configurations tau muaj peev xwm ntau dua cov muaj peev xwm thiab lub zog tshaj lwm qib.

Nws yog tsim nrog kev sib xyaw ua ke ntawm cov kev cuam tshuam kov cov kab mob chloside kev tawg, thiab pitting thiab crevice corrosion nrog lub zog uas yog ob zaug uas ntawm stainless hlau 300 series.
Pom lsaw erw EFW
S31600 YEEB NKAB
Nyab laj
Belarusian
www.oepip.com
Seamless steel yeeb nkab thiab raj
Nickel Alloy Daim Hlau & Cov Ntawv Qhia & Coils
Nickel Alloy Flanges
ASME B36.19M Stainless Hlau Yeeb Nkab
ASTM A403 Stainless Hlau Asme B16.9 45 90 degrees luj
hastelloy b2 steel yeeb nkab raj n10665 sml

C-22 yog ib txoj kev xaiv zoo thaum SuperaiTenitic stainless hlau (al-6xn, 904L, thiab 2507) yuav tsis withstand tsis tshua muaj kev tawm tsam. Qhov no yog vim tias nws yog npib tsib xee-molybdenum-tungsten alloy nrog rau lwm yam ni-mo angle alloy, zoo li Hastelloy C-27, C-4, thiab Alloy 625.

Tag nrho peb cov nyiaj ntawm 310 310 30s stainless hlau flanges uas peb muab yog tsim los ntawm cov khoom ntshiab ntawm cov khoom siv raw, siv cov khoom siv ua kom zoo nkauj thiab tsis nco qab cov khoom lag luam thoob ntiaj teb.

SAE 304 stainless hlau yog qhov feem ntau steel hlau. Cov hlau muaj ob txoj kev chromium (nruab nrab ntawm 18% thiab 20%) thiab thib pua (nruab nrab ntawm 8%) [1] cov hlau uas yog cov qauv hlau tseem ceeb. Nws yog ib tus neeg siv tshuaj hlau tsis huv. Nws tsis tshua muaj hluav taws xob thiab cuam tshuam cov khoom siv hluav taws xob ntau dua li cov hlau. Nws sib nqus, tab sis tsis sib nqus dua li hlau. Nws muaj ntau dua corrosion tsis kam ntau dua li cov hlau tsis tu ncua thiab siv dav siv vim yog qhov yooj yim nyob rau hauv ntau yam duab. [1]

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.

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).

A193 Qib B7 ES el TAMMO? O de Empernado Mas ESTILIZADO, Ademas de Las Tiilizan Para Empernar Tuberias de Acero Al Carbono. Los pernos A193 B7 Estan Disponibles en TAMA? NS Metricos de m6 ib qho M180 Y TAMSESES tsib 1 \ / 4 pulgadas tsib diametro.

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

ASTM A320 chav kawm L7 lub zog ceev rau siv cov khoom siv siab zoo rau kev ua cov khoom lag luam ruaj khov, tuaj yeem siv rau hauv ntau qhov kub hauv cov ntawv thov bolting.

316L stainless hlau muaj tsawg dua carbon thiab molybdenum dua li raug 316 hlau, uas muab ob alloys sib txawv.

WERKSTOFF NOM.1.4436 316 Lub cev tsis muaj zog ntawm cov pob zeb tsis muaj zog tiv thaiv tus kab mob atmospheric, ntxiv rau qhov chaw txo qis thiab txo cov chaw ib puag ncig. Corrosion resistant nyob rau hauv kev ua kom muaj kuab cog ntoo ua kom huv. Nws muaj qhov ua tau zoo heev rau intergranular corrosion.

Monel 400 2.4360 kav nrog nrog bl Flanges thiab luj tshib

ASTM A213, Tp304L, Tp306L, Tp316L, 316TI TP317, SP317, S31254, NO8367, NO8926, NO8367, NO867

SA 420 WPL6 Luj tshib yog ib hom feem ntau siv nyob rau hauv ntau daim ntawv thov vim tias nws xav tau los hloov cov kev taw qhia ntawm cov yeeb nkab kab.
Nickel Alloy Fasteners
S31600 YEEB NKAB
Nyab laj
Belarusian
www.oepip.com
Seamless steel yeeb nkab thiab raj
Stainless Hlau Daim Hlau & Cov Ntawv Qhia & Coils
Nickel Alloy Flanges
ASME B36.19M Stainless Hlau Yeeb Nkab

Hastelloy b3 dig muag flanges muaj zoo nkag, thiab oxidation¡s tsis kam. Hastelloy B3 Weld Neck Flanges IsninsTended rau siv nyob rau hauv muaj ferric lossis cupric mariners vim tias cov mariners no tuaj yeem coj tsis tau ua tsis tau.

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.

Cov Khoom Siv: ASTM A312, Tp304L, Tp304L, Tp316, SP317, S3127, NO8367, NO8926, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO8367, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NO816, NOT8926, NO866

Stainless Hlau Huv Fittings Yog Lub Ntsiab Tseem Ceeb Ntawm Cov Txheej Txheem Huv Laus. Raws li ib qho ntawm cov chaw daws teeb meem huv si, HT FDA, GMP cov kev xav tau.

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.

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.

Qib 316 tseem muaj hlau ntau, thiab dua cov nyiaj npib npib tsib xee thiab chromium ntau, mangybdenum, thiab silicon. Vim li no, qib 316 stainless hlau feem ntau nyiam rau kev siv hauv cov av marine.
Inconel 625 coil yog cov yam ntxwv zoo los ntawm nws cov kev tiv thaiv zoo rau oxidation, qhov siab-kub corrosion thiab qaug zog. ASTM B443 tsis yog N06625 Inconel P phaj tau siv dav hauv Aerospace, kev ua lag luam thiab roj thiab muaj zog zoo dua qub txawm tias muaj ib puag ncig zoo.
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.

316L stainless hlau seamless tubing yog siv rau cov ntawv thov kom pom zoo dua. Tsawg carbide nag lossis daus thaum lub sij hawm pipeline vuam txo cov intregranular thiab corrosion. Seamless Tubes khwv tau ntau los ntawm? " rau 16 ".

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.

Alloy C276 yog npib tsib xee, chromium thiab molybdenum alloy. Hastelloy C276 yog tsim los rau kev txhim kho corrosion zoo nkauj thiab oxidation tsis kam nyob rau ntau qhov chaw ib puag ncig. Cov alloys kuj tseem pom tsis kam rau pitting thiab crevice corrosion.
Pom lsaw erw EFW
S31600 YEEB NKAB
Nyab laj
Belarusian
www.oepip.com
Seamless steel yeeb nkab thiab raj
Nickel Alloy Daim Hlau & Cov Ntawv Qhia & Coils
Nickel Alloy Flanges
ASME B36.19M Stainless Hlau Yeeb Nkab
ASTM A403 Stainless Hlau Asme B16.9 45 90 degrees luj
Ntev: Raws li qhov koj xav tau. "

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.
Pom lsaw erw EFW
S31600 YEEB NKAB
Nyab laj
Belarusian
www.oepip.com
Seamless steel yeeb nkab thiab raj
Nickel Alloy Daim Hlau & Cov Ntawv Qhia & Coils
Nickel Alloy Flanges
ASME B36.19M Stainless Hlau Yeeb Nkab
ASTM A403 Stainless Hlau Asme B16.9 45 90 degrees luj
Inconel 600 Yeeb Nkab Antioxidant

ASTM A234 WPB Yeeb Nkab Fittings Carbon Steel Luj Siv Siv Nyob Rau Hauv Siab Ntsig Ntsig Fabrication Thiab Siab Pipelines

M4-M64 DIN931 W.NR.1.4876 Alloy 800 Incoloy 800 hex Bolt Ib Zaug Xov Tooj Nruab Nrab

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.