Stainless hlau

Alloy 718 tau pib tsim rau Aerospace kev lag luam tab sis nws tau pom zoo corrosion tau raug lees paub los ntawm cov roj kev lag luam thiab nws yog tam sim no dav siv hauv daim teb no ib yam nkaus.

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

Inconel 718 Welded yeeb nkab yog npib tsib xee-molybdenum uncoy tsim los tiv thaiv ib puag ncig muaj ntau yam, pitting thiab crevice corrosion. Inconel 718 EFW Yeeb yog Nickel-chromium alloy uas muaj kev kub ntxhov ntawm kev nce qib siab txog li ntawm 1300 degrees Fahrenheit (700 degrees Celsius). Inconel 718 ERW Tube muaj cov cuab yeej zoo tshaj plaws nyob rau hauv siab thiab qis kub.

Hastelloy B3 Yeeb tau muaj qhov zoo tsis kam rau kev ntxhov siab corrosion tawg uas yog chloride ntxias. Qhov zoo tsis kam mus rau qhov dav dav ntawm cov organic acids ua hastelloy b2 kav ib qho khoom lag luam nrov.

Nickel 201 yog qhov tsawg dua carbon qib uas muaj tsawg annaled hardness thiab tus nqi ua haujlwm tsawg heev rau kev ua haujlwm txias.

Incoloy 909 raj muaj cov ntsiab lus siab dua ferrod thiab qis dua tus nqi ntawm cov tswv cuab. Peb muab cov lus teb ceev ceev rau cov neeg siv khoom nug thiab tshwj xeeb hauv kev xa tawm sai ntawm ob qho loj thiab me me ntawm Incoloy 909 raj.

Ntau cov lag luam nyiam qhov tseeb uas Inconel 600 yog ib qho ntau yam. Yog li ntawd cov alloy yog siv nyob rau hauv ob peb cov ntaub ntawv tseem ceeb hauv ntau hom ntawv suav nrog qhov nrov tsis sib xws 600 cov yeeb nkab. Kev tsim kho ntawm cov kav dej no tuaj yeem welded lossis lawv tuaj yeem yog seamless. Muaj cov txiaj ntsig siv ob qho tib si. Rau e.g. Qhov kev nyiam ntawm ib qho kev hloov kho 600 Welded yeeb nkab, yog nyob rau hauv cov ntawv thov uas nws lag luam ua haujlwm tseem ceeb heev. Txawm hais tias pheej yig dua li cov noob tsis muaj zog tsim ib qho, cov kav dej no muaj cov kab sib tw ntev, uas tuaj yeem ua rau muaj kev cuam tshuam nrog kev txhim kho corrosion - yog tias lawv tsis raug. Hauv ib qho xwm txheej, uas tus neeg yuav khoom yuav tsum tau muaj qhov siab tshaj plaws ntawm corrosion tsis kam thiab muaj peev xwm tiv taus qhov siab dua, tsis haum 600 seamless yeeb nkab yog qhov kev xaiv zoo tshaj plaws.
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Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Duplex Steel Daim Hlau & Cov Ntawv Qhia & Coils

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.

Tsawg Nickel Alloy Hlau Yeeb Nkab
Inconel 625 yog ib qho alloy uas tseem ua tau zoo ntawm qhov chaw kub qis dua. Kev hloov kub hloov tuaj yeem ua rau lub raj alloy kom nthuav lossis cog lus. Yog li ntawd, cov ntaub ntawv nrog kev ductility zoo, xws li Inconel 625 yuav tsum tau xaiv rau cov raj xa mus rau qhov kub hloov pauv, tshwj xeeb tshaj yog vim lawv cov khoom zoo.

Thaum nce qhov kub thiab txias, feem ntau alloys sai sai tsis txaus siab vim oxidation. Txawm li cas los xij, nyob rau qhov kub uas muaj 1050¡Ãc, the inconel 625 clad yeeb nkab yog ib qho tsis muaj kev phom sij kom tsis txhob ua rau oxidation. Cov ntaub ntawv no yog tsim rau kev tsim kho, tshwj xeeb yog cov khoom siv xws li alloy 625 seamless yeeb nkab rau cov ntawv thov cua sov.
www.htsteelpipe.com
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Zhengzhou Huitong Pipeline Equipment Co., Ltd.

Nickel alloy leeg muaj cov tshuab zoo nkauj. Cov raj no muaj lub zog tensile ntawm tsawg kawg 67,000 psi thiab muaj zog ntawm tsawg kawg 21,500 psi. Lawv tuaj yeem yooj yim nce mus txog 45%. Lub siab nickel alloy raj yog tsim rau kev ua tiav zoo thiab zoo dua. Cov kav dej no muaj cov khoom sib nqus zoo thiab ua kom muaj zog ntawm cov zog siab thiab qis kub.

Ntxiv nrog rau lawv cov ntsiab lus siab thiab tiv taus oxidation thiab corrosion thiab corrosion, nickel alloys yog cov du dej ¨c lawv tau yooj yim kos tawm mus rau hauv cov hlab nyias. Lawv tuaj yeem yog cov electroplated thiab tau yooj yim welded, ua rau lawv haum rau kev siv hauv kev lag luam uas muaj siab heev thiab tsawg kub los ua si.
Hollow Hlau Kav
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
Welded Yeeb Nkab Ua Cov Khoom Siv Ntawm Inconel 625 N06625 Kav Kav
Thickness: Sch5 ~ Schxxs
Corrugated Seamless Hlawv Hastelloy

Raws li ib qho alloy, txij li haastelloy muaj cov khoom siv oxidizing zoo tshaj plaws rau cov neeg sawv cev rau cov neeg sawv cev rau cov neeg ua haujlwm kom zoo rau cov chaw ib puag ncig ntawm kev ua kom muaj zog. Hastelloy tshav kub txawj nqus raj feem ntau siv hauv cov ntawv thov rau cov kav dej rau cov kav dej thiab cov li qub raws li petrochemical kev lag luam. Hastelloy welded tubing kuj tseem siv nyob rau hauv nuclear reactors thiab tshuaj lom neeg. Ntxiv mus, haastelloy hloov lub raj tseem muaj kev paub los ua kom pom kev siv zoo rau cov hlab ntsha siab thiab kev hloov pauv kub.
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Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Duplex Steel Daim Hlau & Cov Ntawv Qhia & Coils

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.

Hastelloy B2 kav yog muaj nyob hauv kev cai ntau thiab thickinges raws li cov neeg siv khoom. Lawv tau npaj txhij muaj nyob rau hauv cov qauv hauv tebchaws thiab thoob ntiaj teb ntawm cov nqi zoo heev. Nws yog lub zog ntawm nickel alloy tau siv nyob rau hauv kev txo qis heev. Lawv tau ua los ntawm cov khoom siv raw zoo. Nws los hauv ntau qib kawm thiab cov ntawv.

Nickel alloy leeg muaj cov tshuab zoo nkauj. Cov raj no muaj lub zog tensile ntawm tsawg kawg 67,000 psi thiab muaj zog ntawm tsawg kawg 21,500 psi. Lawv tuaj yeem yooj yim nce mus txog 45%. Lub siab nickel alloy raj yog tsim rau kev ua tiav zoo thiab zoo dua. Cov kav dej no muaj cov khoom sib nqus zoo thiab ua kom muaj zog ntawm cov zog siab thiab qis kub.

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).
Hollow Hlau Kav
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
Welded Yeeb Nkab Ua Cov Khoom Siv Ntawm Inconel 625 N06625 Kav Kav
Thickness: Sch5 ~ Schxxs
Corrugated Seamless Hlawv Hastelloy

Cov kav dej thiab cov hlab yog ntawm cov feem ntau siv cov khoom siv uas muaj cov nickel alloys xws li incoloy, thiab muaj ntau yam muaj nyob rau ntawm kev ua lag luam. Rau cov ntawv thov uas yuav tsum muaj lub siab-zog thiab corrosive-resistant cov ntaub ntawv, inconel alloy 718 yog tsim nyog ntawm kev txiav txim siab.

Incoloy 909 raj muaj cov ntsiab lus siab dua ferrod thiab qis dua tus nqi ntawm cov tswv cuab. Peb muab cov lus teb ceev ceev rau cov neeg siv khoom nug thiab tshwj xeeb hauv kev xa tawm ntawm ob qho loj thiab cov raj welded / Welded Yeeb Nkab / Welded Yeeb Nkab / Welded Yeeb Nkab / Welded Yeeb Nkab / Vaw LSAW EF EFW EFW / Beveled Kawg, Plain Kawg
Nickel Alloy Seamless Yeeb Nkab
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
C2000 hastelloy alloy tubing hastelloy C2000 Seamless Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49

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.

Piv rau lwm cov khoom siv tsis xeb lossis cov hlau hlau ua ke, cov npib tsib xee muaj peev xwm los txais cov khoom siv ntau dua hauv cov teeb meem. Lawv tuaj yeem yog tswj hwm qhov kev ruaj khov me me. Kev sib xyaw ua ke ntawm cov kev sib txuam siab thiab ntau cov ntsiab lus tuaj yeem muab cov khoom zoo corrosion zoo heev hauv ntau qhov chaw ib puag ncig, thaum tseem tswj kev vuam zoo thiab tsim cov yam ntxwv.

Ib yam li ntawd, Nickel Alloy C-276 thiab Hastelloy C-276 tuaj yeem welded los ntawm txhua txoj kev vuam hlau (oxyacetylene tsis pom zoo). Vim nws zoo heev corrosion tsis kam, haastelloy C-276 yog siv hauv cov ntawv thov tseem ceeb los ntawm ntau yam kev lag luam.
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Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Duplex Steel Daim Hlau & Cov Ntawv Qhia & Coils

Alloy 718 yog npib tsib xee-chromium alloy uas tuaj yeem ua kom muaj kev kub ntxhov, yooj yim ntawm cov muaj peev xwm ua kom muaj zog, uas tuaj yeem muab welded nrog kev tawg zoo. Cov alloy tuaj yeem siv nyob rau ntawm qhov kub txog 700oC.

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.

Incoloy 800 \ / 800H \ / 800HT Qib Alloys muaj ntau yam khoom tshwj xeeb thiab cov yam ntxwv uas ua rau kav thiab cov leeg txawm xav tau. Ua cov chaw tsim khoom thiab cov khoom lag luam ntawm cov khoom lag luam xws li, peb ua kom txhua yam peb cov khoom lag luam raws li cov kev xav tau thiab cov neeg yuav tsum tau ua ntawm peb cov neeg siv khoom. Yog li ntawd, peb siv cov ntaub ntawv raw zoo uas tau kuaj tau zoo thiab siv raws li cov qauv kev ua haujlwm thoob ntiaj teb. Nrog nws, niaj hnub thev naus laus zis thiab cov cuab yeej tshiab tuaj yeem siv los tsim cov kav dej tsim tau los tsim cov kav dej thiab cov leeg ntawm cov qauv loj thiab ntev.

Nickel-based alloys muaj txiaj ntsig zoo rau kev tsim cov khoom lag luam zoo tubing muag. Ib qho ntawm qhov tseem ceeb yog vim li cas uas lawv muab cov ntaub ntawv zoo tshaj plaws ntawm ob qho tib si aious thiab siab-kub.
www.htsteelpipe.com
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Nickel Alloy Daim Hlau & Cov Ntawv Qhia & Coils

Kev ua haujlwm siab nickel alloys rau qaub roj thiab roj teb. Incoloy 800ht tubing Harden Hardened Nickel-raws li cov khoom siv npib tsib xee siab, muaj zog, tsis tshua muaj kev sib nqus thiab corrosion heev. Incoloy 800ht tubing tau ua pov thawj yuav muaj txiaj ntsig thiab ntau yam khoom siv tau los daws tau ntau yam tsim thiab kev thov teeb meem. Incoloy 800HT tubing muaj peev xwm tiv thaiv tsis tshua muaj ntsuas kub hnyiab, nrog rau kev ua haujlwm siab ib puag ncig. Qhov zoo tshaj plaws weldability ntawm lub alloy, thiab nws muaj peev xwm tau koom nrog ua tiav zoo heev rau lwm cov alloys nrog cov sib txawv.
www.htsteelpipe.com
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Duplex Steel Daim Hlau & Cov Ntawv Qhia & Coils

La tuberia incoloy 800 ES Una de Esas Daj De Alta Deversenia Que isteede ak oxidacion y La carburacion. Tuam tsev lo tanto, nws yog tuberias SE UPLICACIONES DONTE DOWNE SE Reseference Ib Corrosion Corros Y La Carburacion.
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Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Alloy Hlau Daim Hlau & Cov Ntawv Qhia & Coils

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.

Rau nws cov ntawv thov myriad, kev lag luam ua lag luam ib txwm nrhiav rau cov ntaub ntawv txhim khu kev qha. Cov khoom siv tau txais txiaj ntsig zoo ntawm Hastelloy tau ua rau pom kev zoo thiab kev loj hlob hauv lub zog, kev noj qab haus huv thiab roj thiab cov tshuaj.
Nickel Alloy Seamless Yeeb Nkab
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
C2000 hastelloy alloy tubing hastelloy C2000 Seamless Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49

Hastelloy C-276 yog npib tsib xee-molybdenum alloy nrog General Corrosion tsis kam lees los ntawm lwm qhov alloy. Nws muaj qhov ua tau zoo heev rau ntau yam tshuaj lom neeg ib puag ncig, suav nrog cov kab mob hauv cov pa hluav taws xob, cov tshuaj pleev pob zeb thiab cov tshuaj pleev pob zeb thiab cov tshuaj pleev pob zeb, dej hiav txwv, cov tshuaj tsw qab qhuav, canochlorite dolutions thiab hypochlorite.

Yog vim li cas peb cov neeg muas zaub nyiam ua haujlwm nrog Nickel alloy leeg. Ib qho ntxiv, Nickel alloy leeg muaj cov thermal zoo, hluav taws xob thiab magnetostrictive cov khoom. Qhov tseem ceeb heev thermal conductivity ntawm qib no ntawm npib tsib xee tubing tau tshwm sim hauv nws cov kev nquag siv ntawm kev sib pauv cua sov.

Nickel alloy leeg muaj cov tshuab zoo nkauj. Cov raj no muaj lub zog tensile ntawm tsawg kawg 67,000 psi thiab muaj zog ntawm tsawg kawg 21,500 psi. Lawv tuaj yeem yooj yim nce mus txog 45%. Lub siab nickel alloy raj yog tsim rau kev ua tiav zoo thiab zoo dua. Cov kav dej no muaj cov khoom sib nqus zoo thiab ua kom muaj zog ntawm cov zog siab thiab qis kub.

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.
Hollow Hlau Kav
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
Welded Yeeb Nkab Ua Cov Khoom Siv Ntawm Inconel 625 N06625 Kav Kav
Thickness: Sch5 ~ Schxxs
Corrugated Seamless Hlawv Hastelloy

Raws li ib qho ntawm feem ntau ntau yam thiab cov khoom lag luam zoo li qub, npib tsib xee nyeem cov ntaub ntawv alloys nrog ntau yam ntsiab lus. Feem ntau, cov ntsiab lus xws li chromium, molybdenum, tooj liab, thiab tungsten yog siv los tsim HIGHOY Nickel Alloy Seamless kav. Cov khoom ntiag tug ntawm cov lag luam nickel yog tus hlau muaj peev xwm tiv thaiv cov chaw kub. Yog li ntawd, hauv cov ntawv thov uas yuav tsum muaj cov khoom siv hluav taws xob ntau dua thaum muaj qhov kub, ntshiab thermal ua tiav cov leeg yog qhov kev xaiv zoo tagnrho.
www.htsteelpipe.com
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
ASTM B407 UNRICS N08800 INCOLOY 800 Welded Yeeb Nkab
Thickness: Sch5 ~ Schxxs
Tsim cov qauv ASME B36.10 ASME B36.49
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Tsim cov qauv ASME B36.10 ASME B36.40

Inconel alloy hlab yog siv hauv cov menyuam hnov ​​qhov chaw uas lawv tau nthuav tawm qhov chaw tawg ntawm qhov kub heev, nrog rau cov pob zeb corrosive thov. Nws tseem siv rau kev txhaj tshuaj oxygen hauv cov hlau thiab iav ua kom, nrog rau cov hws condenser ntawm cov dej-dej.

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.
Hollow Hlau Kav
Cov Hlau Hlau
jcopipe.com
Welded Tube
Hlau Ntsiav
Stainless hlau yeeb nkab & raj
Welded Yeeb Nkab Ua Cov Khoom Siv Ntawm Inconel 625 N06625 Kav Kav
Thickness: Sch5 ~ Schxxs
Corrugated Seamless Hlawv Hastelloy

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.
Hlau Daim Phiaj & Cov Ntawv Qhia & Coils
Tsim cov qauv ASME B36.10 ASME B36.27
Duplex Steel Fasteners
\ / 5 / raws li
Thickness: Sch5 ~ Schxxs
Ntev: Raws li qhov koj xav tau.
Incoloy 909 Tube - Zhengzhou Huitong Pipeline Equipment Co., Ltd.
Tsim cov qauv asme b36.10 asme b36.25

ASTM B619 WELDED cov yeeb nkab rau cov chaw lag luam kws tshuaj tau zoo corrosting tau zoo corrosion tsis kam, tshwj xeeb yog cov dej siab purity. Thiab lawv kuj pom zoo tsis kam rau corrosion los ntawm cov kev daws tsis tau npaj siv los npaj cov kws tshuaj yog tias Astm B6176 tsis yog nthuav tawm cov khoom siv ntxuav tu.