ASTM A928 S31803 Chav Kawm 5 Duplex Yeeb Nkab: Specs, Vuam & Khoom Siv

Astm a928 s31803 Cl5 Duplex Pipe tsum,tiv tauj pebkom tau txais kev tsocai dawb thiab qauv!

Astm a928 s31803 Cl5 Duplex Pipe yog dab tsi?

ASTM A928 Cov Lus Qhia Tshwj Xeebyog tus qauv specification rau ferritic/austenitic (duplex) stainless hlau yeeb nkab haum rau corrosive los yog siab - qhov kev pab kub. Tshwj xeeb, ASTM A928 npog hluav taws xob- fusion-welded duplex stainless hlau yeeb nkab rau corrosive lossis siab - kev pabcuam kub. Ntawm cov qib sib txawv los ntawm ASTM A928,S31803 Duplex Stainless hlau EN 1.4462yog ib qho ntawm feem ntau siv qib, paub txog nws zoo heev corrosion kuj thiab mechanical zog.

ASTM A928 S31803 Cl5qhia meej txog qee qhov yuav tsum tau ua rau duplex stainless hlau yeeb nkab nyob rau hauv raws li -welded mob, tshwj xeeb tshaj yog hais txog tshuaj muaj pes tsawg leeg, txhua yam khoom, qhov ntev, thiab kam rau ua. Qhov kev xaiv "Cl5" qhia txog cov chav kawm tshwj xeeb ntawm cov yeeb nkab hauv ASTM A928 / ASME SA 928 specification, uas tej zaum yuav muaj kev xav tau ntxiv lossis kev txhim kho piv rau cov chav kawm qis.

Yam tseem ceeb ntawm ASTM A928 S31803 Cl5 suav nrog:

1. Chemical Composition: Cov muaj pes tsawg leeg ntawmASTM A928 UNS S31803 Txheem:nruj tswj xyuas kom ntseeg tau tias qhov xav tau sib npaug ntawm austenite thiab ferrite theem, nrog rau muaj cov ntsiab lus alloying xws li chromium, npib tsib xee, molybdenum, thiab nitrogen. Cov khoom no ua rau muaj kev tiv thaiv corrosion, lub zog, thiab toughness ntawm cov khoom.

2. Mechanical Properties: ASTM A928 qhia cov khoom siv ntawm S31803 duplex stainless hlau yeeb nkab, suav nrog lub zog tensile, yield zog, elongation, thiab hardness. Cov khoom no yog qhov tseem ceeb rau kev ntsuas qhov tsim nyog ntawm cov khoom siv rau ntau yam kev pabcuam, suav nrog qhov siab -siab thiab siab- qhov kub thiab txias.

3. Weldability: Duplex stainless hlau zoo liduplex S31803 khoompom zoo weldability thaum ua raws li cov txheej txheem vuam zoo. ASTM A928 muab cov lus qhia rau vuam duplex stainless hlau yeeb nkab siv cov txheej txheem vuam tsim nyog thiab cov ntaub ntawv muab tub lim kom ntseeg tau cov suab welds nrog cov khoom tsim nyog thiab kev tiv thaiv corrosion.

4. Dimensions thiab Tolerances:ASTM A928 S31803 Cl5 EFW yeeb nkabtxhais qhov yuav tsum tau muaj rau duplex stainless hlau yeeb nkab, nrog rau sab nraud txoj kab uas hla, phab ntsa thickness, thiab ntev. Tsis tas li ntawd, tus qauv qhia txog kev ua siab ntev los xyuas kom meej qhov tseeb thiab qhov sib xws, ua kom yooj yim haum thiab sib dhos hauv cov kav dej.

5. Corrosion Resistance:ASTM A928 UNS S31803 EFW Pipes muaj kev tiv thaiv zoo rau ntau hom kev xeb, suav nrog kev xeb dav dav, pitting corrosion, thiab kev ntxhov siab corrosion tawg. Qhov kev tiv thaiv corrosion no yog ntaus nqi rau cov alloy siab chromium, molybdenum, thiab nitrogen cov ntsiab lus, nrog rau nws cov microstructure sib npaug ntawm austenite thiab ferrite theem.

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Sib piv CL1, CL2, CL3, thiab CL4 nrog CL5 hauv ASTM A928 Specification:

1. CL1 (Class 1):

• CL1 feem ntau qhia txog qib qis tshaj ntawm cov kev xav tau, tsim nyog rau qhov chaw dav dav lossis me me. Qhov no txhais tau hais tias cov khoom siv lub zog, kev tiv thaiv corrosion, thiab lwm yam, tej zaum yuav qis dua cov khoom ntawm qib siab dua.
• Cov ntaub ntawv ntawm CL1 qib yuav muaj cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab tsim nyog rau cov kev cai niaj hnub engineering, tab sis lawv cov kev ua tau zoo nyob rau hauv cov xwm txheej hnyav yuav raug txwv.

2. CL2 (Class 2):

• Qib CL2 tuaj yeem sawv cev rau cov ntaub ntawv siv nyob rau hauv ib puag ncig kev sib tw ntau dua, yuav tsum muaj kev tiv thaiv corrosion ntau dua, lub zog, lossis lwm yam ntsuas kev ua tau zoo.
• Piv nrog rau CL1, cov ntaub ntawv ntawm CL2 qib yuav muaj cov tshuaj lom neeg nruj dua thiab cov khoom siv kho tshuab kom ntseeg tau tias kev ua tau zoo nyob rau hauv cov xwm txheej hnyav.

3. CL3 (Class 3):

• CL3 qib yuav suav nrog cov kev xav tau siab dua, tshwj xeeb tshaj yog rau cov ntawv thov nyob rau hauv siab -kub lossis ib puag ncig corrosive heev. Qhov no tej zaum yuav xav tau ntau dua kub ua hauj, corrosion kuj, los yog kev nyuaj siab corrosion cracking kuj.
• Cov ntaub ntawv ntawm qib CL3 tuaj yeem siv cov txheej txheem ntau lawm los yog koom nrog cov ntsiab lus tshwj xeeb alloying los txhim kho lawv cov kev ua tau zoo thiab ua tau raws li cov kev xav tau ntawm engineering.

4. CL4 (Class 4):

• Qib CL4 tuaj yeem sawv cev rau qib ntawm cov khoom siv uas yuav tsum tau ua raws li kev ua haujlwm nruj tshaj plaws. Qhov no tuaj yeem suav nrog qhov kub siab, siab, corrosion, lossis lwm yam ib puag ncig.
• Cov ntaub ntawv ntawm CL4 qib yuav xav tau cov tshuaj ua kom zoo tshaj plaws, kev kho cua sov, thiab cov txheej txheem tsim khoom kom ntseeg tau tias lawv muaj kev ruaj khov thiab kev ntseeg tau raws li qhov xav tau tshaj plaws.

Ntau hom ntau lawm thiab cov ntaub ntawv khoom muaj los ntawm HT PIPE

Peb muab kev ua kom tiav qhov kev hloov kho los txhawb koj ntawm - lub sijhawm tsim khoom:

• Loj Spectrum:Nominal qhov ntau thiab tsawg xws li 2 nti mus txog 48 nti sab nraud txoj kab uas hla kom npog loj - ntim cov kab thauj.
• Phab ntsa Thickness Scales:Kev cai fabrication txuam lub teeb lub sij hawm xws li Sch 10S mus txog hnyav- lub luag hauj lwm muaj phab ntsa.
• Kev kho cov txheej txheem:Tag nrho cov kav dej tau ua tiav cov tshuaj annealing thiab dej quenching tom qab cov txheej txheem vuam kom rov ua kom corrosion thiab sib npaug ntawm microstructure.
• Full System Integration:Peb muab cov khoom sib xws nrog rau ASTM A182 forged flanges, ASTM A815 taub qab -weld fittings, thiab kev cai - ntev piping pob.

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