HT PIPE is aSuper duplex stainless hlau 2507 yeeb nkabtus xa khoom nrog 15+ kev xa tawm.Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Super Duplex 2507 kav(UNS S32750 / EN 1.4410) tau hloov pauv los ntawm lwm txoj hauv kev zoo rau cov qauv kev xav tau rau cov ntawv thov siab -. Qhov kev tshuaj ntsuam xyuas dav dav no tshawb pom vim li cas cov phiaj xwm hauv cheeb tsam hauv cheeb tsam cia siab rau qhov tshwj xeeb 25% chromium alloy, piv nws cov tshuab ua haujlwm rau cov ntaub ntawv txheem thiab tshuaj xyuas nws cov kev xa tawm thoob plaws cheeb tsam xav tau.
Lub Metallurgical Foundation: Dab tsi txhais tau tias Super Duplex 2507?
Qhov kev ua tau zoo ntawm Super Duplex 2507 yog los ntawm nws qhov tseeb, dual -theem microstructure. Tsis zoo li cov pa 304 lossis 316L stainless hlau, uas muaj cov qauv austenitic crystalline nkaus, Super Duplex 2507 yog engineered kom muaj kev sib npaug.50/50 piv ntawm austenite thiab ferrite nplej.
Qhov no dual -theem chemistry leverages cov txiaj ntsig zoo ntawm ob qho kev teeb tsa:
- Theem Austenite:Muab cov qauv ductility, formability, thiab dav corrosion kuj.
- Ferrite Phase:Muab cov khoom ua kom muaj zog thiab ua haujlwm zoo rau cov tshuaj chloride-induced stress corrosion cracking (SCC).
Super Duplex 2507 Pipe Specifications
| Specifications | ASTM A790, ASME SA790 |
| ASTM A789, ASME SA789 | |
| Cov qauv | ASTM, ASME, thiab API |
| Sab nraud | 1/2" - 36" (13.7 hli - 914.4 hli) |
| Phab ntsa Thickness | 0.3 hli - 50 hli |
| Teem caij | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Ntev | Ib qho Random, Ob Chav Random, Txiav Ntev |
| Xaus | Plain End, Beveled kawg, Treaded |
| Dimensional Specification | ANSI / ASME B36.10, B36.19 |
| Hom | Seamless, ERW, Welded, Fabricated |
| Daim ntawv | Round Pipes, Square Pipes, Rectangular Pipes, "U" Shape, Hydraulic Pipes |
Cov yam ntxwv zoo thiab mechanical zoo
1. High Tensile thiab Yield zog
Nrog tsawg kawg nkaus tawm lub zog ntawm80 ksi (550 MPa)thiab lub zog tensile ntawm116 ksi (790 MPa), Super Duplex 2507 muaj ntau dua ob npaug ntawm cov khoom siv dag zog ntawm cov pa austenitic stainless hlau. Qhov kev thauj khoom siab no- cov kabmob muaj peev xwm tso cai rau cov kws tsim qauv tsim los qhia cov phab ntsa nyias nyias rau cov kev ntsuas siab zoo ib yam. Qhov kev txo qis no txo qis tag nrho cov kav dej hnyav, ncaj qha txo cov nqi ntawm cov khoom siv raw thiab cov qauv kev txhawb nqa ntawm ntug dej hiav txwv sab saum toj thiab ntev -khiav cov yeeb nkab racks.
2. Resistance to Chloride Stress Corrosion Cracking (SCC)
Austenitic steels yog qhov yooj yim heev rau kev puas tsuaj rau kev ntxhov siab corrosion tawg thaum raug kev nyuaj siab tensile nyob rau hauv sov, chloride- nplua nuj ib puag ncig. Lub ferritic matrix embedded nyob rau hauv 2507 cov kav dej thaiv kev nthuav tawm ntawm cov kab nrib pleb no, tso cai rau cov khoom siv ua kom ntseeg tau hauv ib puag ncig uas yuav ua rau tsis ua haujlwm sai hauv cov qauv stainless hlau.
3. Thermal Conductivity thiab Expansion Efficiency
Super Duplex 2507 nthuav tawm cov thermal conductivity ntau dua thiab qis dua coefficient ntawm thermal expansion piv rau cov qauv austenitic steels. Qhov kev sib xyaw ua ke no txo qis thermal qaug zog hauv cov txheej txheem cov cuab yeej muaj kev hloov pauv ntawm qhov kub thiab txias, ua rau nws zoo - haum rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob.
Cov txheej txheem tseem ceeb ntawm Fabrication thiab Txheej Txheem
Txhawm rau kom ntseeg tau tias cov kav dej Super Duplex 2507 xa lawv cov khoom siv ua haujlwm, cov chaw tsim khoom yuav tsum ua raws li cov txheej txheem nruj. Deviations tuaj yeem cuam tshuam qhov muag 50/50 theem sib npaug thiab ua rau ua tsis tiav ntxov.
Welded vs. Seamless yeeb nkab xaiv
Seamless Yeeb Nkab (ASTM A790 / ASME SA790):Extruded yam tsis muaj longitudinal welds, seamless variants yog nyiam rau siab heev - cov kab siab, qaub roj downhole daim ntaub ntawv, thiab cov tshuaj tseem ceeb thauj uas nyob rau hauv geometric uniformity yog yuav tsum tau.
Welded Yeeb Nkab (ASTM A928 / ASME SA928):Ua los ntawm cov phaj dov thiab longitudinally welded, cov kav dej no muab tus nqi -kev daws teeb meem zoo rau txoj kab uas hla loj dua thiab qis dua - kev siv hluav taws xob siab, muab cov kab weld tsis nruj heev uas tsis yog- kuaj kev puas tsuaj (NDT).
Vuam Metallurgy thiab Interpass Limits
Vuam 2507 yuav tsum muaj kev tswj xyuas qhov kub thiab txias kom tiv thaiv kev tsim cov nkig intermetallic theem, xws lisigma theem, uas sai sai depletes hauv zos chromium thiab molybdenum qib.
- Filler hlau:Fabricators yuav tsum siv ntau tshaj -cov ntaub ntawv muab tub lim (feem ntau 25% Cr, 9% Ni, 4% Mo nrog txhim kho Nitrogen, xws li 2594 lossis E2594) kom them nyiaj rau qhov poob thiab xyuas kom lub vuam vuam ua kom muaj qhov tseeb duplex qauv.
- Kub Caps:Interpass kub yuav tsum tau khaws ciaHauv qab 300℃F (150 degree). Preheating yog tsis pom zoo tshwj tsis yog tias tshem tawm ambient ya raws ntawm cov hlau txias.
Thermal Processing Limits
Super Duplex 2507 tsis yog ib qho kev daws teeb meem thoob ntiaj teb rau txhua qhov siab - qhov kub thiab txias. Lub alloy yog raug rau885℃F (475 degree) embrittlementthaum khaws cia ntawm qhov kub siab tshaj 600℃F (316 degree) rau ncua sij hawm. Qhov no thermal exposure ua rau alpha-thaum theem nag lossis daus, uas txo cov khoom toughness thiab cuam tshuam tsis kam. Yog li ntawd, nws lub qhov rais ua haujlwm feem ntau txwv rau qhov kub thiab txias-50℃rau +300 degree.
