ASTM A789 thiab ASTM A790 ob leeg npog seamless thiab welded ferritic -austenitic, feem ntau hu ua duplex, stainless hlau khoom. Lawv qhov sib txawv tseem ceeb yog cov khoom siv: ASTM A789 siv raucevThaum ASTM A790 siv raucev.
Qhov sib txawv no cuam tshuam li cas cov khoom loj, xaj, txuas thiab siv. A789 tubing feem ntau teev los ntawm qhov tseeb sab nraud txoj kab uas hla thiab phab ntsa tuab. A790 yeeb nkab feem ntau tau teev los ntawm nominal yeeb nkab loj, Teem caij lossis qhov ntev ntawm cov yeeb nkab.
Cov lus teb ncaj qha
XaivASTM A789 Cov Lus Qhia Tshwj Xeebthaum cov khoom xav tau yog duplex stainless hlau tubing rau cov khoom siv, cov khoom siv hluav taws xob, kev ntsuas lossis kev pabcuam dav dav. XaivASTM A790 Cov Lus Qhia Tshwj Xeebthaum cov khoom yog duplex stainless hlau yeeb nkab rau txheej txheem los yog industrial piping systems.
ASTM A789 vs ASTM A790 ntawm ib sab
| Yam khoom | ASTM A789 Cov Lus Qhia Tshwj Xeeb | ASTM A790 Cov Lus Qhia Tshwj Xeeb |
|---|---|---|
| Yam khoom | Duplex stainless hlau tubing | Duplex stainless hlau yeeb nkab |
| Tsab ntawv tam sim no | ASTM A789 / A789M-24 | ASTM A790 / A790M-24 |
| Kev tsim khoom | Seamless los yog welded | Seamless los yog ncaj -seam welded |
| Txoj kev sizing | Qhov tseeb OD thiab phab ntsa thickness | NPS, Teem caij, OD thiab phab ntsa thickness |
| Hom kev siv | Cov cuab yeej siv hluav taws xob, cov khoom siv hluav taws xob, cov cuab yeej siv thiab cov kev pabcuam dav dav | Txheej txheem, siab thiab industrial piping systems |
| Cov qhab nia | S31803, S32205, S32750 thiab lwm cov npe duplex qib | S31803, S32205, S32750, S32760 thiab lwm cov npe duplex qib |
ASTM A789 yog dab tsi?
ASTM A789 / A789M yog qhov tshwj xeeb rau seamless thiab welded ferritic -austenitic stainless hlau tubing rau kev pabcuam dav dav. Nws npog nominal-phab ntsa-thickness tubing siv qhov twg yuav tsum muaj corrosion kuj, nrog rau kev saib xyuas tshwj xeeb rau kev tiv thaiv kev ntxhov siab-corrosion cracking.
A789 tubing feem ntau xaiv rau:
- Thaum tshav kub kub -exchanger thiab condenser tubing
- Instrumentation thiab tswj kab
- Txheej txheem- cov khoom sib txuas
- Dej- khoom siv kho mob
- Tshuaj- cov khoom siv ua haujlwm
- General corrosion-cov tubing tshuab
Nyeem tagASTM A789 duplex stainless hlau tubing qhiarau qib, cua sov- kev kho mob thiab cov ntsiab lus kuaj.
ASTM A790 yog dab tsi?
ASTM A790 / A790M yog qhov tshwj xeeb rau seamless thiab ncaj -seam welded ferritic- austenitic stainless hlau yeeb nkab. Nws yog npaj rau kev pabcuam corrosive, tshwj xeeb tshaj yog qhov uas tiv thaiv kev ntxhov siab -corrosion cracking yuav tsum tau.
A790 yeeb nkab feem ntau xaiv rau:
- Industrial txheej txheem kav
- Tshuaj-hloov tshuab
- Dej -kev kho thiab desalination pipelines
- Offshore thiab marine piping
- Cov txheej txheem roj thiab roj
- Chloride- muaj cov kua dej
Nyeem tagASTM A790 duplex stainless hlau yeeb nkab qhiarau kev tsim, vuam, tshuaj xyuas thiab kev yuav khoom.
Lub ntsiab sib txawv: Tube vs Pipe
Qhov sib txawv ntawm A789 thiab A790 pib nrog kev sib txawv ntawm cov raj thiab cov yeeb nkab.
| Feature | Tube | Yeeb |
|---|---|---|
| Qhov loj me | Qhov tseeb sab nraud txoj kab uas hla thiab phab ntsa thickness | Nominal yeeb nkab loj, Teem caij thiab qhov tseeb qhov ntev |
| Lub hauv paus xaiv thawj | Dimensional precision, khoom haum thiab fabrication | Flow, siab, piping code thiab kev sib txuas system |
| Kev sib txuas | Tube fittings, vuam, expansion los yog cov khoom sib txuas | Butt welding, flanges, threaded fittings lossis piping -kev sib txuas |
| Tej daim ntawv thov | Cov cuab yeej siv thiab cov khoom siv - theem siv | Nroj tsuag thiab qhov system- theem kev thauj mus los |
Tseem ceeb:Cov neeg muag khoom lag luam qee zaum siv "tube" thiab "pipe" xoob. Kev txiav txim yuav khoom yuav tsum txheeb xyuas qhov tseeb ASTM tus qauv thiab qhov ntev es tsis txhob cia siab rau ntawm cov khoom npe.
Qhov Loj: OD thiab Phab Ntsa Thickness vs NPS thiab Teem sijhawm
ASTM A789 tubing
A789 tubing feem ntau txiav txim siv qhov ntev. Ib qho kev nug ib txwm yuav qhia meej:
ASTM A789, UNS S32205, seamless tubing, 25.4 hli OD × 1.65 hli nominal phab ntsa × 6000 hli ntev.
ASTM A790 Tube
A790 yeeb nkab tuaj yeem raug txiav txim siv NPS thiab Teem sijhawm lossis los ntawm qhov tseeb sab nraud thiab phab ntsa tuab. Ib qho kev nug ib txwm yuav qhia meej:
ASTM A790, UNS S32205, seamless yeeb nkab, NPS 4, Teem caij 40S, 6000 hli ntev, bevelled kawg.
Covstainless hlau yeeb nkab Schedule charttuaj yeem pab cov neeg yuav khoom sib piv NPS, sab nraud txoj kab uas hla thiab phab ntsa tuab rau A790 yeeb nkab.
Cov qib khoom siv los ntawm ob qho tib si Standards
A789 thiab A790 npog ntau yam ferritic -austenitic stainless hlau qib. Cov qhab nia uas nquag teev muaj xws li:
UNS S31803
Ib tug tsim duplex stainless hlau qib nrog ib tug dav muaj pes tsawg leeg ntau tshaj S32205.
UNS S32205 - Duplex 2205
Cov qib duplex siv dav ua ke nrog lub zog siab nrog kev tiv thaiv chloride kev nyuaj siab -corrosion cracking thiab ntau yam kev lag luam corrosion.
UNS S{0}} Super Duplex 2507
Ib qib siab dua - alloy super duplex qib siv rau cov tshuaj chloride hnyav, dej hiav txwv, offshore thiab desalination ib puag ncig.
Lwm cov qib uas teev tseg
Ob qho kev qhia tshwj xeeb suav nrog cov qib lean duplex, duplex thiab super duplex qib. Lub npe UNS tiag tiag yuav tsum raug kuaj xyuas raws li qhov tsim nyog.
Tib qib UNS tsis ua A789 tubing thiab A790 yeeb nkab sib hloov. Cov khoom loj, kev tsim khoom, kev sim thiab kev npaj siv tseem txawv.
Seamless thiab Welded Tsim
Ob qho tib si A789 thiab A790 tso cai seamless thiab welded khoom, tab sis cov lus thiab cov qauv khoom raug txawv.
| Yam khoom | ASTM A789 Cov Lus Qhia Tshwj Xeeb | ASTM A790 Cov Lus Qhia Tshwj Xeeb |
|---|---|---|
| Seamless khoom | Seamless tubing | Seamless yeeb nkab |
| Welded khoom | Welded tubing | Ncaj-seam welded yeeb nkab |
| Weld tsom | Tube qhov ntev, tsim kev ua tau zoo thiab weld kev ncaj ncees | Kev ncaj ncees ntawm cov yeeb nkab, weld seam thiab piping - cov kev pabcuam |
| Kev xaiv | Raws li kev tsim, qhov ntev, siab, corrosion kuj, tshuaj xyuas, muaj thiab nqi | |
Lub xub ntiag ntawm weld seam tsis yog los ntawm nws tus kheej txiav txim siab cov khoom zoo. Cov khoom siv chemistry, vuam txheej txheem, kev kho cua sov, cua txias, theem sib npaug thiab kev tshuaj xyuas yog qhov tseem ceeb dua.
Kev kho cua sov yuav tsum tau
Ob qho qauv yuav tsum muaj qib tsim nyog -kev kho cua sov tshwj xeeb. Duplex stainless hlau nyob ntawm kev tswj ferrite - austenite tshuav nyiaj li cas rau lub zog, toughness thiab corrosion kuj.
Ib txoj hauv kev ntau lawm suav nrog:
01.Tsim los yog seamless ntau lawm
02.Welding qhov twg siv tau
03.Qib-kev kho cua sov uas tsim nyog
04.Ceev ceev txias los yog quenching
05.Mechanical, corrosion thiab nondestructive pov thawj
Kev kho cua sov tsis raug lossis kev ua kom txias qeeb tuaj yeem txhawb kev cuam tshuam ntawm intermetallic theem thiab txo qhov toughness, ductility thiab corrosion kuj.
Kev kuaj thiab tshuaj xyuas
A789 thiab A790 ob leeg xav tau kev txheeb xyuas cov khoom thiab ua tiav - khoom zoo. Lub pob kuaj qhov tseeb nyob ntawm daim ntawv khoom, qib, qhov ntev thiab kev yuav khoom.
| Kev kuaj lossis tshuaj xyuas | ASTM A789 Cov Lus Qhia Tshwj Xeeb | ASTM A790 Cov Lus Qhia Tshwj Xeeb |
|---|---|---|
| Tshuaj ntsuam xyuas | Yuav tsum tau ua pov thawj qib | Yuav tsum tau ua pov thawj qib |
| Mechanical kuaj | Tensile, hardness thiab tube-cov ntawv xeem tshwj xeeb raws li muaj | Tensile, hardness thiab yeeb nkab- kev ntsuas tshwj xeeb raws li muaj |
| Kev ntseeg siab | Hydrostatic los yog tso cai tsis muaj kev kuaj xyuas | Hydrostatic los yog tso cai tsis muaj kev kuaj xyuas |
| Dimensional soj ntsuam | OD, phab ntsa, ovality, ncaj thiab ntev | OD, phab ntsa, Teem caij, ovality, ncaj thiab xaus |
| Kev kuaj ntxiv | PMI, corrosion, ferrite lossis thib peb - tog tshuaj xyuas thaum tau teev tseg | PMI, corrosion, weld kuaj los yog thib peb- tog tshuaj xyuas thaum tau teev tseg |
Cov kev cai tshwj xeeb yuav tsum tau hais ua ntej ntau lawm. Ntxiv kev ntsuam xyuas corrosion, kev sim cuam tshuam los yog thib peb -kev ua pov thawj tom qab kev tsim khoom yuav ua tsis tau.
Daim ntawv thov sib txawv
Xaiv ASTM A789 rau cov khoom siv tubing
Thaum tshav kub kub exchangers, instrumentation kab, cov khoom sib txuas, raj bundles thiab raug qhov luaj li cas corrosion-resistant tubing.
Xaiv ASTM A790 rau txheej txheem piping
Muaj cov kav dej, kev thauj cov dej cog, kev faib tawm, cov kav dej siab thiab cov tshuab siv cov yeeb nkab fittings thiab flanges.
Tshawb xyuas ob qho tib si thaum cov lus tsis meej
Qee cov ntaub ntawv project siv "tube" thiab "pipe" inconsistently. Paub meej tias qhov ntev, txoj kev sib txuas, tus qauv tsim thiab kev ua haujlwm ua ntej xaiv tus qauv.
Tshuaj xyuas ASTM A928 rau muab tub lim -hlau EFW yeeb nkab
Thaum cov khoom lag luam yog duplex stainless hlau hluav taws xob -fusion-welded yeeb nkab tsim nrog ntxiv cov hlau muab tub lim, ASTM A928 tej zaum yuav yog qhov tsim nyog dua.
Hom kev lag luam
Ob tus qauv yuav txhawb nqa duplex stainless hlau cov khoom siv hauv kev xav tau kev lag luam ib puag ncig.
Qhov twg ASTM A928 haum
ASTM A928 npog duplex stainless hlau yeeb nkab tsim los ntawm hluav taws xob fusion vuam nrog ntxiv muab tub lim hlau. Nws siv tsib -chav kawm system raws li kev kho vuam thiab kev kuaj hluav taws xob.
| Txuj | Khoom | Manufacturing Focus |
|---|---|---|
| ASTM A789 Cov Lus Qhia Tshwj Xeeb | Duplex tubing | Seamless los yog welded raj |
| ASTM A790 Cov Lus Qhia Tshwj Xeeb | Duplex yeeb nkab | Seamless los yog ncaj -seam welded yeeb nkab |
| ASTM A928 Cov Lus Qhia Tshwj Xeeb | Duplex EFW yeeb nkab | Fusion welded nrog muab tub lim hlau thiab chav kawm -raws li radiography |
Yuav Ua Li Cas Xaiv Ntawm ASTM A789 thiab A790
1. Txheeb xyuas daim ntawv ntawm cov khoom.
Txiav txim seb qhov project xav tau tubing lossis yeeb nkab.
2. Txheeb xyuas txoj kev sizing.
Qhov tseeb OD thiab phab ntsa qhov ntev ib txwm qhia cov tubing; NPS thiab Teem caij ib txwm qhia cov yeeb nkab.
3. Txheeb xyuas qhov kev sib txuas.
Tshawb xyuas cov fittings, raj -cov ntawv nthuav dav, taub qab vuam, flanges lossis cov yeeb nkab fittings.
4. Saib xyuas cov cai tsim.
Cov khoom siv los yog cov kav dej siv tau tuaj yeem txheeb xyuas cov khoom lag luam lees paub.
5. Paub meej txog kev pabcuam.
Txheeb xyuas qhov siab, qhov kub thiab txias, txheej txheem nruab nrab, chlorides thiab corrosion txaus ntshai.
Yuav Ua Li Cas Qhia ASTM A789 Tubing
Txheem:ASTM A789 / A789M thiab edition
Qib:Yuav tsum muaj npe UNS
Kev tsim kho:Seamless los yog welded
Qhov Loj:Qhov tseeb OD, phab ntsa thickness thiab ntev
Kev kuaj:Hydrostatic lossis NDT, kev kuaj corrosion thiab PMI
Daim ntawv thov:Khoom siv, kua, siab, kub thiab fabrication yuav tsum
Yuav Qhia Li Cas ASTM A790 Pipe
Txheem:ASTM A790 / A790M thiab ib tsab
Qib:Yuav tsum muaj npe UNS
Kev tsim kho:Seamless los yog ncaj -seam welded
Qhov Loj:NPS lossis OD, Teem caij lossis phab ntsa tuab, thiab ntev
Xaus:Plain, bevelled los yog threaded raws li xav tau
Daim ntawv thov:Siab, qhov kub thiab txias, txheej txheem nruab nrab, kuaj thiab kav dej code
Rau qhov kev txiav txim dav dua -kev npaj ua haujlwm, xa mus raustainless hlau yeeb nkab quotation guide.
Kev yuav khoom yuam kev
Siv cov yeeb nkab thiab lub raj sib hloov
Qhov no tuaj yeem ua rau tsis raug qhov ntev, fittings, kam rau ua thiab pricing.
Qhia tsuas yog duplex 2205
Qhov kev txiav txim yuav tsum hais qhov tseeb UNS qib, tus qauv, qhov ntev thiab daim ntawv ntawm cov khoom.
Muab NPS rau A789 tubing yam tsis muaj qhov ntev
A789 tubing feem ntau yuav tsum tau txhais los ntawm qhov tseeb sab nraud txoj kab uas hla thiab phab ntsa thickness.
Tsis quav ntsej txog tus qauv tsim code
ASTM cov ntaub ntawv tshwj xeeb tsis hloov cov kav dej -cov txheej txheem lossis cov khoom siv tsim nyog.
Xaiv cov qib tsuas yog los ntawm PREN
PREN muaj txiaj ntsig zoo rau kev sib piv alloy, tab sis qhov tseeb corrosion nyob ntawm qhov kub, qib chloride, pH, deposits, fabrication thiab deg mob.
Cov lus nug nquag
Dab tsi yog qhov txawv ntawm ASTM A789 thiab ASTM A790?
ASTM A789 npog duplex stainless hlau tubing. ASTM A790 npog duplex stainless hlau yeeb nkab.
Puas yog ASTM A789 tubing seamless lossis welded?
ASTM A789 npog ob leeg seamless thiab welded duplex stainless hlau tubing.
Puas yog ASTM A790 yeeb nkab seamless lossis welded?
ASTM A790 npog ob seamless thiab ncaj -seam welded duplex stainless hlau yeeb nkab.
Puas yog A789 thiab A790 ob leeg suav nrog duplex 2205?
Ob tus qauv suav nrog cov qib duplex uas cuam tshuam nrog 2205, suav nrog UNS S31803 thiab S32205, raug rau cov ntawv tsim nyog.
Puas yog ob tus qauv suav nrog super duplex 2507?
Ob qho qauv suav nrog cov qib super duplex xws li UNS S32750, raws li cov qauv tsim nyog thiab cov khoom yuav tsum tau ua.
A789 tubing puas tuaj yeem hloov A790 yeeb nkab?
Tsis tau. Lawv qhov ntev, hom khoom tsim, fittings thiab tsim cov kev xav tau sib txawv.
Thaum twg yuav tsum tau siv ASTM A928?
ASTM A928 yuav tsum tau tshuaj xyuas thaum cov khoom lag luam yog duplex stainless hlau hluav taws xob - fusion- welded yeeb nkab tsim nrog ntxiv cov hlau.
Xaiv qhov raug Duplex khoom Standard
ASTM A789 thiab ASTM A790 npog zoo li duplex stainless hlau cov tsev neeg, tab sis lawv pab cov khoom sib txawv thiab cov qauv tsim.
Xaiv A789 kom raug qhov ntev tubing siv hauv cov khoom siv thiab cov khoom siv - qib kev siv. Xaiv A790 rau cov yeeb nkab siv hauv cov kua dej ua lag luam - thauj thiab txheej txheem - cov kav dej.
Ua ntej lees paub qhov kev txiav txim, txheeb xyuas cov khoom lag luam, qib UNS, qhov ntev, txoj kev tsim khoom, cov kev pabcuam, kev xeem cov cai thiab cov qauv tsim qauv.
Xav tau kev pab xaiv ntawm ASTM A789 thiab A790?
Xa STAKENG koj qhov yuav tsum tau muaj qhov ntev, qib duplex, kom muaj nuj nqis, kev pabcuam thiab kev soj ntsuam yuav tsum tau ua. Peb pab neeg tuaj yeem tshuaj xyuas seb qhov project xav tau ob lub stainless hlau tubing lossis yeeb nkab thiab paub meej tias muaj kev xaiv khoom.
Xa koj qhov SpecificationCov ntaub ntawv pov thawj: ASTM A789 / A789M-24 thiab ASTM A790 / A790M-24. Nrog rau cov qauv yuav khoom thiab cov txheej txheem siv tau rau qhov yuav tsum tau ua.
