ASTM A335 P9, tseem hu ua ASME SA335 P9, yog seamless ferritic alloy steel yeeb nkab rau kev pabcuam kub nrogUNS No. K90941.
Cov ntsiab lus alloying feem ntau yog chromium thiab molybdenum.Cov ntsiab lus chromium nyob ntawm 8.00 - 10.00%, thaum cov ntsiab lus molybdenum nyob rau hauv thaj tsam ntawm 0.90% - 1.10%.
P9muaj zog zoo heev thiab zoo corrosion kuj nyob rau hauv high-temperature ib puag ncig thiab yog dav siv nyob rau hauv boilers, petrochemical khoom, thiab fais fab chaw nres tsheb qhov twg high-temperature thiab high-pressure ib puag ncig yuav tsum tau.
⇒ Khoom sivASTM A335 P9 / ASME SA335 P9 seamless alloy steel yeeb nkab.
⇒Sab nraud txoj kab uas hlaLoj: 1/8 "- 24"
⇒Phab ntsa thicknessCov ntsiab lus: ASME B36.10.
⇒Teem caijSCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140 thiab SCH160.
⇒Kev txheeb xyuas: STD (tus qauv), XS (muaj zog ntxiv), lossis XXS (ob npaug ntxiv-muaj zog).
⇒Ntev: Tshwj xeeb lossis random ntev.
⇒Kev kho kom haum: Tsis yog-tus qauv txheej kab, phab ntsa thickness, ntev, thiab lwm yam raws li qhov yuav tsum tau ua.
⇒Fittings: Peb tuaj yeem muab cov khoom siv tib yam khoov, stamping flanges, thiab lwm yam khoom siv steel yeeb nkab.
⇒IBR daim ntawv pov thawj: Daim ntawv pov thawj IBR tuaj yeem muab tau yog tias xav tau.
⇒Xaus: Plain kawg, beveled kawg, los yog composite yeeb nkab kawg.
⇒Ntim: ntoo rooj plaub, steel siv los yog steel hlau packing, yas los yog hlau yeeb nkab kawg tiv thaiv.
⇒Kev thauj mus los: los ntawm marine lossis aviation.
ASTM A335 steel yeeb nkab yuav tsum seamless.
Seamless steel yeeb nkab yog cov yeeb nkab steel uas tsis muaj welds thoob plaws.
Txij li thaum seamless steel yeeb nkab tsis muaj welded seams nyob rau hauv nws cov qauv, nws zam lub peev xwm kev nyab xeeb uas tej zaum yuav txuam nrog weld zoo teeb meem.Cov yeeb yam no tso cai rau cov yeeb nkab seamless los tiv thaiv kev kub ntxhov ntau dua, thiab nws cov qauv sib xyaw ua ke ntxiv ua kom muaj kev ncaj ncees thiab kev nyab xeeb ntawm cov yeeb nkab hauv qhov chaw muaj kev kub ntxhov.
Tsis tas li ntawd, kev ntseeg siab ntawm ASTM A335 tubing yog txhim kho los ntawm kev sib ntxiv ntawm cov ntsiab lus alloying tshwj xeeb rau kev kub siab thiab kev kub siab.
Cov hom kev kho cua sov muaj rau cov khoom siv P9 suav nrog tag nrho lossis isothermal annealing, nrog rau normalizing thiab tempering.Cov txheej txheem normalizing thiab tempering muaj qhov kub thiab txias ntawm 1250 ° F [675 ° C].
Lub ntsiab alloying ntsiab ntawm P9 yogCrthiabMo, uas yog chromium-molybdenum alloys.
Cr (Chromium): Raws li lub ntsiab tseem ceeb ntawm cov hlau, Cr muab kev ua haujlwm siab kub thiab tiv thaiv oxidation.Nws tsim cov ntaub ntawv ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom chromium oxide zaj duab xis rau saum npoo ntawm cov hlau, ua kom muaj kev ruaj khov thiab corrosion tsis kam ntawm cov yeeb nkab ntawm qhov kub thiab txias.
Molybdenum (zeeg): Qhov sib ntxiv ntawm Mo ho txhim kho lub zog thiab toughness ntawm alloys, tshwj xeeb tshaj yog nyob rau hauv high-temperature ib puag ncig.Mo kuj pab txhim kho lub zog creep ntawm cov khoom, piv txwv li lub peev xwm los tiv thaiv deformation nyob rau hauv lub caij ntuj sov raug.
Tensile Properties
P5, P5b, P5c, P9,P11P15, P21, thiab P22: Lub tensile thiab yield zog yog tib yam.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, thiab P22: Tib elongation.
ATable 5 muab cov nqi tsawg kawg nkaus uas xam tau.
Qhov twg phab ntsa thickness nyob nruab nrab ntawm ob qhov tseem ceeb saum toj no, qhov tsawg kawg nkaus elongation tus nqi yog txiav txim los ntawm cov qauv hauv qab no:
Ntev, P9: E = 48t + 15.00 [E = 1.87t + 15.00]
Transverse, P9: E = 32t + 15.00 [E = 1.25t + 15.00]
qhov twg:
E = elongation hauv 2 nti lossis 50 mm, %,
t = tiag thickness ntawm specimens, in. [mm].
Hardness
P9 tsis tas yuav tsum tau kuaj hardness.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, thiab P921: Tsis tas yuav tsum tau kuaj hardness.
Thaum sab nraud txoj kab uas hla > 10 in. [250 mm] thiab phab ntsa thickness ≤ 0.75 in. [19 mm], tag nrho cov yuav tsum tau kuaj hydrostatically.
Kev sim siab tuaj yeem suav nrog kev sib npaug hauv qab no.
P = 2st/D
P= hydrostatic test siab hauv psi [MPa];
S= yeeb nkab phab ntsa kev nyuaj siab hauv psi los yog [MPa];
t= teev phab ntsa thickness, nominal phab ntsa thickness raws li teev tseg ANSI lub sij hawm tus naj npawb los yog 1.143 lub sij hawm qhov tsawg kawg nkaus phab ntsa thickness, nyob rau hauv. [mm];
D= teev sab nraud txoj kab uas hla, sab nraud txoj kab uas hla raws li teev ANSI yeeb nkab loj, los yog sab nraud txoj kab uas hla xam los ntawm kev ntxiv 2t (raws li tau hais los saum toj no) rau cov teev hauv txoj kab uas hla, in. [mm].
Lub sij hawm sim: khaws tsawg kawg yog 5s, tsis muaj dej.
Thaum cov yeeb nkab yuav tsum tsis txhob hydrotested, yuav tsum tau ua ib qho kev ntsuam xyuas tsis muaj kev puas tsuaj ntawm txhua cov yeeb nkab kom pom qhov tsis xws luag.
Kev ntsuam xyuas tsis zoo ntawm cov khoom siv P9 yuav tsum tau ua los ntawm ib txoj hauv kevE213, E309 or E570.
E213: Xyaum rau Ultrasonic Test ntawm Hlau Yeeb Nkab thiab Tubing;
E309: Xyaum rau Eddy Kev Xeem Tam Sim No ntawm Cov Khoom Siv Hlau Tubular Siv Sib Nqus Saturation;
E570: Xyaum rau Flux Leakage Examination ntawm Ferromagnetic Steel Tubular khoom;
Permissible Variations in Diameter
Kev sib txawv ntawm txoj kab uas hla tuaj yeem raug cais raws li 1. raws li txoj kab uas hla sab hauv lossis 2. raws li qhov nominal lossis sab nraud.
1. Sab hauv txoj kab uas hla: ± 1%.
2. NPS [DN] los yog sab nraud txoj kab uas hla: Qhov no ua raws li qhov tso cai sib txawv ntawm cov lus hauv qab no.
Permissible Variations nyob rau hauv Phab ntsa Thickness
Lub thickness ntawm cov yeeb nkab phab ntsa ntawm txhua qhov chaw yuav tsum tsis txhob tshaj qhov kev kam rau ua.
Qhov tsawg kawg nkaus phab ntsa thickness thiab sab nraud txoj kab uas hla rau kev soj ntsuam kom ua raws li qhov yuav tsum tau rau cov yeeb nkab txiav txim los ntawm NPS [DN] thiab lub sij hawm tus naj npawb yog qhia nyob rau hauvASME B36.10M.
Cov ntsiab lus ntawm kev kos npe: Chaw tsim khoom lub npe lossis lub cim lag luam;tus lej txheem;qib;ntev thiab ntxiv cim "S".
Cov cim rau hydrostatic siab thiab kev sim tsis muaj kev puas tsuaj hauv cov lus hauv qab no yuav tsum suav nrog.
Kos qhov chaw: Kos npe yuav tsum pib kwv yees li 12 ntiv tes (300 mm) los ntawm qhov kawg ntawm cov yeeb nkab.
Rau cov kav dej mus txog NPS 2 lossis tsawg dua 3 ft (1 m) ntev, cov ntaub ntawv cim yuav raug txuas rau lub cim.
ASTM A335 P9 steel yeeb nkab yog dav siv nyob rau hauv boilers, petrochemical khoom fais fab chaw nres tsheb, thiab lwm yam., uas yuav tsum tau tiv taus kub thiab siab kub vim nws superior kub thiab high-pressure kuj.
Boilers: Tshwj xeeb tshaj yog nyob rau hauv lub ntsiab chav piping thiab reheater piping ntawm supercritical thiab ultra-supercritical boilers rau kub heev thiab pressures.
Petrochemical khoom: Xws li cov kav dej tawg thiab cov kav dej kub, uas ua rau cov pa kub thiab cov tshuaj lom neeg, yuav tsum muaj cov khoom siv nrog kub thiab corrosion kuj.
Chaw nres tsheb fais fab: Rau cov kav dej tseem ceeb thiab cov cua kub siab siab, nrog rau cov kav dej turbine sab hauv los tiv thaiv lub sijhawm ntev ntawm qhov kub thiab txias.
P9 Cov ntaub ntawv muaj lawv tus kheej cov qhab nia hauv cov txheej txheem sib txawv hauv lub tebchaws.
EN 10216-2: 10CrMo9-10;
GB/T 5310: 12Cr2Mo;
JIS G3462: STBA 26;
ISO 9329: 12CrMo195;
GOST 550: 12ChM;
Ua ntej xaiv cov khoom sib npaug, nws raug pom zoo kom muab cov ncauj lus kom ntxaws kev sib piv thiab kev sim ua kom ntseeg tau tias cov khoom siv lwm yam yuav ua tau raws li qhov xav tau ntawm tus qauv tsim.
Txij li thaum nws tsim nyob rau hauv 2014,Botop Steeltau dhau los ua tus xa khoom ntawm carbon steel yeeb nkab nyob rau sab qaum teb Tuam Tshoj, paub txog kev pabcuam zoo, cov khoom zoo, thiab cov kev daws teeb meem zoo.
Lub tuam txhab muaj ntau yam carbon steel kav thiab lwm yam khoom, xws li seamless, ERW, LSAW, thiab SSAW steel yeeb nkab, raws li zoo raws li ib tug tag nrho lineup ntawm cov yeeb nkab fittings thiab flanges.Nws cov khoom tshwj xeeb kuj suav nrog cov qib high-qib alloys thiab austenitic stainless hlau, tsim kom tau raws li qhov xav tau ntawm ntau yam kev siv kav dej.
Thov koj xav tiv tauj peb yog tias koj muaj kev xav tau lossis cov lus nug txog steel tubing.Peb tos ntsoov yuav tau txais koj cov ntaub ntawv thiab tos ntsoov yuav pab koj.
