ASTM A928 yeeb nkab chaw tsim tshuaj paus. Tiv tauj peb kom tau txais kev tsocai dawb thiab qauv!
HT PIPE yog ib tug thawj coj stockist thiab thoob ntiaj teb exporter nrog ntau tshaj 16 xyoo ntawm kev txawj ntse nyob rau hauv thoob ntiaj teb kev lag luam. Peb muab cov kav dej, daim hlau, cov kab tuav, thiab ntau yam ntawm cov yeeb nkab fittings, flanges, thiab li qub.Tiv tauj pebtam sim no rau cov quotes dawb thiab cov ntaub ntawv khoom ntiag tug.
Taw qhia rau ASTM A928
ASTM A928 Cov Lus Qhia Tshwj Xeebyog ib tug qauv specification tsim los ntawm American Society for Testing and Materials (ASTM), Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal. Qhov kev qhia tshwj xeeb no qhia txog qhov yuav tsum tau ua rau cov kav hlau tsis muaj zog duplex npaj rau corrosive lossis siab -kev pabcuam kub.
Tsib chav kawm ntawm cov yeeb nkab tau them raws li hauv qab no:
- Chav kawm 1 -Cov yeeb nkab yuav tsum tau muab ob npaug rau welded los ntawm cov txheej txheem siv cov hlau muab tub lim hauv txhua qhov kev hla thiab yuav tsum tau kuaj pom tag nrho.
- Chav kawm 2 -Cov yeeb nkab yuav tsum muab ob npaug rau welded los ntawm cov txheej txheem siv cov hlau muab tub lim hauv txhua qhov kev hla. Tsis tas yuav radiograph.
- Chav kawm 3 -Cov yeeb nkab yuav tsum yog ib qho welded los ntawm cov txheej txheem siv cov hlau muab tub lim hauv txhua qhov kev hla thiab yuav tsum tau kuaj pom tag nrho.
- Chav kawm 4 -Ib yam li Chav Kawm 3, tshwj tsis yog tias qhov vuam kis tau raug rau hauv cov yeeb nkab saum npoo tuaj yeem ua yam tsis muaj qhov sib ntxiv ntawm cov hlau.
- Chav kawm 5 -Cov yeeb nkab yuav tsum tau muab ob npaug rau welded los ntawm cov txheej txheem siv cov hlau muab tub lim hauv txhua qhov kev hla thiab yuav tsum tau kuaj pom.
Covered Qib thiab Tshuaj Chemical Composition:
- 1. ASTM A928 UNS S31803 cl.1(Duplex 2205, 1.4462): Qib no feem ntau muaj 22% chromium, 5-6% npib tsib xee, 3% molybdenum, thiab 0.2-0.3% nitrogen, muab kev tiv thaiv zoo corrosion thiab siab zog.
- 2. UNS S32205 (Duplex 2205, 1.4462): Zoo ib yam li UNS S31803, UNS S32205 kuj muaj 22% chromium, 5-6% nickel, 3% molybdenum, thiab 0.2-0.3% nitrogen, muab superior corrosion kuj thiab mechanical zog.
- 3. UNS S32750 (Super Duplex 2507, 1.4410): Super Duplex 2507 muaj 25% chromium, 7% npib tsib xee, 4% molybdenum, thiab 0.3-0.5% nitrogen, muab kev txhim kho corrosion thiab siab zog piv rau duplex 2205.
- 4. UNS S32760 (Super Duplex 1.4501): Zoo ib yam li UNS S32750, UNS S32760 nthuav tawm zoo heev corrosion kuj thiab txhua yam khoom, nrog rau cov ntsiab lus siab dua ntawm chromium thiab molybdenum.
ASTM A928 Duplex EFW Pipes Mechanical Properties:
- Tensile Strength: Feem ntau ntawm 620 MPa rau 900 MPa, nyob ntawm qib thiab qhov loj ntawm cov yeeb nkab.
- Yield Strength: Feem ntau ntawm 450 MPa rau 620 MPa, nrog rau cov nqi siab dua rau cov qib super duplex.
- Elongation: Feem ntau nyob ib ncig ntawm 25% mus rau 30%, qhia tias zoo ductility.
Dimensions thiab Tolerances:
- Sab nraud txoj kab uas hla (OD): Feem ntau yog li ntawm 6 hli mus rau 914 hli, nyob ntawm qib thiab lub sijhawm ntawm cov yeeb nkab.
- Phab ntsa Thickness: txhais los ntawm lub sij hawm ntawm cov yeeb nkab, nrog variations ntawm SCH 5S mus rau SCH 160.
ASTM A928 UNS S31803 EFW Yeeb Nkab Ntau Lawm Txheej Txheem:
- Kev Tsim: Duplex stainless hlau daim hlau yog txias los yog kub tsim rau hauv cylindrical duab.
- Vuam: EFW vuam txheej txheem ua haujlwm hauv kev tsim khoomASTM A928 cov kav dejua rau muaj zog thiab zoo ib yam welds, txhim kho cov qauv kev ncaj ncees thiab ua kom yooj yim ntawm kev teeb tsa.
- Kev kho cua sov: Cov kav dej welded yuav raug kev daws teeb meem los yog kev ntxhov siab kho cua sov los txhim kho lawv cov khoom siv thiab kev tiv thaiv corrosion.
Daim ntawv pov thawj thiab Kev Ntsuas Zoo:
- Mill Test Reports (MTRs): Ua pov thawj tias cov khoom ua tau raws li cov khoom siv tshuaj lom neeg thiab cov khoom siv cuab yeej cuab tam ntawm ASTM A928.
- Tsis yog-Kev Ntsuas Kev Ua Phem (NDT): Cov txheej txheem xws li kuaj ultrasonic (UT), kuaj hluav taws xob (RT), thiab kuaj kua dej nkag (PT) yog siv los txheeb xyuas cov teeb meem sab hauv thiab saum npoo.
- Mechanical Testing: Tensile, yield, thiab elongation tests yog ua los xyuas cov khoom siv ntawm cov kav dej.
ASTM A928 Duplex EFW Yeeb Nkab Daim Ntawv Thov:
- Roj thiab Roj: Siv nyob rau hauv offshore platforms, pipelines, thiab subsea khoom rau lawv corrosion kuj nyob rau hauv hnyav ib puag ncig.
- Chemical Processing: Ua hauj lwm hauv cov tshuaj reactors, tshav kub exchangers, thiab cia tso tsheb hlau luam rau lawv tsis kam mus rau corrosive tshuaj.
- Desalination: Siv nyob rau hauv seawater desalination nroj tsuag rau lawv tsis kam mus corrosion thiab yaig nyob rau hauv saline ib puag ncig.
- Marine Engineering: Siv nyob rau hauv shipbuilding thiab marine structures rau lawv tiv thaiv corrosion nyob rau hauv seawater.
Cov qauv siv:
- ASTM A928 hais txog lwm cov qauv ASTM thiab cov kev qhia tshwj xeeb, suav nrog:
- ASTM A999 / A999M: Txuj kev qhia tshwj xeeb rau cov kev cai dav dav rau cov yeeb nkab steel hlau.
- ASTM E213: Txuj kev xyaum rau kev kuaj ultrasonic ntawm cov yeeb nkab hlau thiab tubing.
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