UNS S31803 duplex stainless hlau kav(feem ntau hla- ntawv pov thawj nrog tus qauv 2205 lossis W.Nr. 1.4462) xa cov khoom qab zib zoo heev. Lawv muab ob npaug ntawm cov neeg kho tshuab lub zog ntawm 316L nrog rau qhov tshwj xeeb tiv thaiv chloride kev nyuaj siab corrosion cracking (SCC), tab sis ntawm ib feem ntawm tus nqi npib tsib xee- puag superalloys. HT PIPE is as31803 duplex stainless hlau rajtus xa khoom nrog 15+ kev xa tawm.
Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Tam sim no Kev Lag Luam Tus Nqi Tshaj Tawm rau S31803 Pipes
Vim tias duplex stainless hlau yog tsim nyob rau hauv cov khoom lag luam ntau dua li cov npib tsib xee superalloys, nws cov qauv nqi yog ze rau lub ntiaj teb stainless hlau indices es tsis yog txawv hlau sib pauv.
Tam sim no, thoob ntiaj teb cov nqi lag luam rau tiavUNS S31803 kav feem ntau yog $4.50 txog $7.50 ib kilogram($ 4,500 txog $7,500 ib metric ton).
Qhov kawg ntawm ib -meter tus nqi hloov pauv loj raws li txoj kev tsim khoom thiab qhov loj me uas yuav tsum tau ua:
| Pipe Fabrication Standard | Tus nqi kwv yees (USD / kg) | Hom Daim Ntawv Thov Profile |
Welded S31803 yeeb nkab
(ASTM A790 / ASME SA790) | $4.50 - $6.00 / kg | Loj - txoj kab uas hla desalination, qis- cov tshuaj lom neeg lub taub hau, cov tshuab nqus dej hauv hiav txwv. |
Seamless S31803 yeeb nkab
(ASTM A790 / ASME SA790) | $5.80 - $7.50 / kg | Siab -cov roj thiab cov roj ntws tawm, cov dej hauv qab dej hiav txwv, cov raj xa hluav taws xob. |
Kev lag luam Optimization Strategies rau cov neeg yuav khoom
Txhawm rau txo tus nqi yuav khoom rau S31803 cov kav dej yam tsis muaj kev cuam tshuam txog kev qhia tshwj xeeb, siv cov khoom siv no- cov tswv yim saw:
1. Leverage Welded Pipes (ASTM A790) rau qis- mus rau - Nruab Nrab Siab
Tshwj tsis yog tias koj lub kaw lus cuam tshuam rau qhov siab heev - kev siv lub siab ntawm ntug dej hiav txwv downhole, welded S31803 kav feem ntau yog qhov kev xaiv pheej yig dua. Ua tsaug rau niaj hnub automated plasma arc welding (PAW) thiab laser vuam thev naus laus zis, qhov sib koom ua ke ntawm kev ua haujlwm tau zoo yog ntsuas ntawm 1.0. Xaiv welded hla seamless txuag roughly20% mus rau 25% ntawm tag nrho cov nqi khoom, thaum xa cov phab ntsa zoo tshaj -thickness uniformity.
2. Ua kom zoo ntawm phab ntsa Thickness Optimization
Vim tias S31803 muaj qhov tsim muaj zog ntau dua li 316L, cov kws ua haujlwm feem ntau tuaj yeem txo cov phab ntsa tuab (piv txwv li, poob los ntawm Teem sijhawm 40 mus rau Teem caij 10S) thaum tswj qhov kev ntsuas siab tib yam. Txo cov phab ntsa thickness slashes tag nrho qhov hnyav ntawm cov piping layout, yielding loj txuag nyob rau hauv ob qho tib si raw khoom tau thiab shipping nqi.
3. Ua kom raug Post-Kev kho cua sov (PWHT) Specifications
Thaum tshuaj xyuas cov ntaub ntawv tsim khoom, xyuas kom tus neeg muag khoom suav nrog qhov tsim nyogkev daws annealing (yam tsawg kawg 1040℃/ 1900℉) ua raws li cov dej nrawm nrawm. Kev sim txiav cov nqi los ntawm kev hla lossis maj nrawm cov kauj ruam no ua rau cov nag lossis daus ntawm cov theem tsis zoo, ua rau cov kav dej tsis txaus thaum lub sijhawm ua haujlwm. Kev them nyiaj rau kev kho cua sov ua ntej yuav zam kev puas tsuaj rau cov nqi hloov tom qab.
Lifecycle Nqi & Performance Matrix (S31803 vs. Competitors)
Cov lus no qhia tau hais tias S31803 ua tiav li cas Tus Nqi Tag Nrho Cov Tswv Cuab (TCO) los ntawm phab ntsa- txo qis, txawm tias muaj tus nqi raw khoom ntau dua ib tuj dua li tus qauv austenitics.
| Khoom Qib | Nominal Raw Material Cost Index (316L=100) | Yam tsawg kawg nkaus tawm lub zog (σ0.2 /MPa) | Pom zoo Phab ntsa Thickness Scaling Factor | Kev cuam tshuam rau Chloride SCC | Pitting Resistance sib npaug (PREN) * |
| Tom ntej: Austenitic 316L(UNS S31603) | 100 | Ntau dua lossis sib npaug li 200 $ | 1.0 (Lub hauv paus) | Siab(Fails nyob rau hauv kub chloride ib puag ncig) | 23 – 25 |
| Duplex S31803(W.Nr. 1.4462) | 120 – 135 | Ntau dua lossis sib npaug li 450 $ | 0.60 – 0.70(Pom phab ntsa nyias) | Tsawg(Zoo heev threshold resistance) | 31 – 35 |
| Super Duplex 2507(UNS S32750) | 170 – 195 | Ntau dua lossis sib npaug li 550 $ | 0.50 – 0.55 | Tsawg heev | 41 – 43 |
S31803 vs . 316L vs. Super Duplex 2507
Txhawm rau kom pom tseeb qhov kev xaiv ntawm S31803 thaum lub sijhawm kev tshawb fawb txog qhov ua tau, qhov kev sib piv tus nqi tuaj yeem ua tau siv "tus nqi sib tw- Performance index":
Kev sib piv nrog316L (cov pa austenitic steel): Tus nqi raw khoom ib tuj rau S31803 feem ntau yog 20% -30% siab dua li ntawm 316L. Txawm li cas los xij, vim tias nws lub zog tawm los yog ob npaug ntawm 316L, nyias nyias - phab ntsa tsim tso cai rau txo qis tag nrho cov kav dej hnyav li ntawm 30% -40%. Qhov no txhais tau hais tias tag nrho cov nqi yuav khoom rau lub cev yog piv rau - lossis txawm qis dua - ntawm 316L, thaum tib lub sijhawm muab qhov zoo tshaj pitting corrosion kuj.
Kev sib piv nrogS32750 / 2507 (super duplex hlau): Qib 2507 muaj cov qib siab dua ntawm chromium, molybdenum, thiab nitrogen, nrog rau cov lej ntawm tooj liab; yog li ntawd, nws tus nqi ib tuj feem ntau ntau dua 40% siab dua li ntawm S31803. Tshwj tsis yog tias lub kaw lus ua haujlwm nyob rau hauv ib puag ncig hnyav heev uas muaj qhov kub thiab txias thiab siab siab ntawm cov xov xwm aggressive (xws li ultra- siab- salinity sib sib zog nqus- roj hiav txwv thiab roj los yog concentrated kub sulfuric acid), S31803 sawv cev rau tus nqi ntau tshaj - kev xaiv zoo thiab sib npaug.
Hu rau tam sim no
