ASTM A53 ERWcov yeeb nkab hlau yogHom Enyob rau hauv A53 specification, tsim los ntawm cov txheej txheem vuam tsis kam, thiab muaj nyob rau hauv ob qho tib si Qib A thiab Qib B.
Nws yog qhov tsim nyog rau kev siv tshuab thiab kev siv siab thiab feem ntau kuj siv ua lub hom phiaj dav dav rau kev xa cov pa dej, dej, roj, thiab cua.
Qhov zoo ntawm ERW steel yeeb nkab, xws litus nqi qisthiabkev tsim khoom siab, ua rau nws yog cov khoom siv xaiv rau ntau daim ntawv thov kev lag luam.
Botop Hlauyog ib lub chaw tsim khoom thiab muag khoom ntawm cov yeeb nkab carbon steel zoo los ntawm Tuam Tshoj, thiab tseem yog ib lub khw muag khoom ntawm cov yeeb nkab steel seamless, muab ntau yam kev daws teeb meem rau koj!
Peb cov khoom muag tau muaj ntau yam thiab peb tuaj yeem ua tau raws li peb cov neeg siv khoom xav tau sai rau ntau qhov ntau thiab tsawg.
ASTM A53/A53M muaj cov hom thiab qib hauv qab no:
Hom EHluav taws xob-ua haujlwm-welded, Qib A thiab B.
Hom STsis Muaj Qhov Txuas, Qib A thiab B.
Hom F: Cub-welded, txuas ntxiv welded Qib A thiab B.
Hom EthiabHom Syog ob hom yeeb nkab uas siv dav. Qhov sib txawv,Hom Ffeem ntau yog siv rau cov raj me dua. Vim yog kev nce qib hauv kev siv tshuab vuam, txoj kev tsim khoom no siv tsawg dua.
Nominal Diameters: DN 6 - 650 [NPS 1/8 - 26];
Txoj kab uas hla sab nraud: 10.3 - 660 hli [0.405 - 26 nti];
Phab ntsa tuab thiab cov yeeb nkab hlau qhov hnyav daim ntawv qhia:
Cov raj xa dej tiaj tiaj tuaj yeem saib tau hauv Rooj X2.2;
Cov raj xa dej uas muaj xov thiab txuas nrog tuaj yeem saib tau hauv Rooj X2.3.
ASTM A53 kuj tso cai rau kev muab cov yeeb nkab nrog lwm qhov ntev yog tias cov yeeb nkab ua tau raws li txhua yam kev cai ntawm cov lus qhia no.
ERWyog dav siv los tsim cov kav hlau carbon thiab cov kav hlau tsis tshua muaj hlau.
Cov txheej txheem hauv qab no yog cov txheej txheem tsim khoom rau kev tsim khoomERW steel yeeb nkab puag ncig:
a) Kev npaj khoom sivCov khoom siv thawj zaug feem ntau yog cov hlau kub dov. Cov kauj no raug ua kom tiaj thiab txiav kom dav raws li qhov xav tau.
b) Kev tsimMaj mam li, los ntawm ntau lub yob, daim kab xev no tau tsim ua ib lub voj voog qhib. Thaum lub sijhawm no, cov npoo ntawm daim kab xev maj mam coj los ze zog ua ke los npaj rau kev vuam.
c) Kev vuamTom qab tsim cov qauv tubular, cov npoo ntawm cov hlau strip raug cua sov los ntawm hluav taws xob tsis kam hauv thaj chaw vuam. Ib qho tam sim no siab dhau los ntawm cov khoom, thiab cov cua sov tsim los ntawm kev tsis kam siv los cua sov cov npoo mus rau lawv qhov chaw yaj, thiab tom qab ntawd lawv raug welded ua ke los ntawm kev siab.
d) Tshem cov kab nrib plebTom qab vuam, cov hlau seem ntawm vuam (cov hlau ntau dhau los ntawm kev vuam) raug tshem tawm ntawm sab hauv thiab sab nraud ntawm lub yeeb nkab kom ntseeg tau tias muaj qhov chaw du hauv lub yeeb nkab.
e) Kev teeb tsa qhov loj thiab qhov ntevTom qab vuam thiab tshem cov burr tiav lawm, cov raj raug xa mus rau hauv lub tshuab ntsuas qhov loj me kom kho qhov ntev kom ntseeg tau tias lawv ua tau raws li qhov yuav tsum tau ua ntawm txoj kab uas hla thiab qhov puag ncig. Tom qab ntawd cov raj raug txiav kom raws li qhov ntev uas tau teem tseg.
f) Kev tshuaj xyuas thiab kev sim: Cov yeeb nkab hlau yuav raug kuaj thiab tshuaj xyuas nruj heev, suav nrog kev kuaj ultrasonic, kev kuaj hydrostatic, thiab lwm yam, kom ntseeg tau tias qhov zoo ntawm cov yeeb nkab hlau ua tau raws li cov qauv thiab cov lus qhia.
g) Kev kho qhov chaw: Thaum kawg, cov yeeb nkab hlau yuav raug rau kev kho mob ntxiv xws li kub dip galvanizing, pleev xim, lossis lwm yam kev kho mob saum npoo kom muab kev tiv thaiv xeb ntxiv thiab kev zoo nkauj.
Cov Welds hauv Hom E lossis Hom F Qib Bcov yeeb nkab yuav tsum tau kho cua sov lossis kho lwm yam tom qab vuam kom tsis muaj martensite uas tsis tau tempered.
Qhov kub ntawm kev kho cua sov yuav tsum tsawg kawg yog1000°F [540°C].
Thaum cov yeeb nkab raug nthuav dav txias, qhov kev nthuav dav yuav tsum tsis pub tshaj1.5%ntawm qhov txoj kab uas hla sab nraud uas tau teev tseg ntawm cov yeeb nkab.
ATsib yam tseem ceebCu, Ni, Cr, Mo, thiabVua ke yuav tsum tsis pub tshaj 1.00%.
BRau txhua qhov kev txo qis ntawm 0.01% qis dua qhov siab tshaj plaws ntawm cov pa roj carbon, kev nce ntawm 0.06% ntawm manganese saum toj no qhov siab tshaj plaws yuav raug tso cai txog li ntawm 1.35%.
CRau txhua qhov kev txo qis ntawm 0.01% qis dua qhov siab tshaj plaws ntawm cov pa roj carbon, kev nce ntawm 0.06% ntawm manganese saum toj no qhov siab tshaj plaws yuav raug tso cai txog li ntawm 1.65%.
Cov Khoom Siv Tensile
| Daim Ntawv Teev Npe | Kev faib tawm | Qib A | Qib B |
| Lub zog tensile, min | MPa [psi] | 330 [48,000] | 415 [60,000] |
| Lub zog tawm los, min | MPa [psi] | 205 [30,000] | 240 [35,000] |
| Kev ntev hauv 50 hli [2 nti] | Lus Cim | A,B | A,B |
Lus Cim AQhov tsawg kawg nkaus elongation hauv 2 in[50 mm] yuav tsum yog qhov txiav txim siab los ntawm cov qauv hauv qab no:
e = 625,000 [1940] A0.2/U0.9
e = qhov ntev tsawg kawg nkaus hauv 2 nti lossis 50 hli hauv feem pua, puag ncig mus rau feem pua ze tshaj plaws
A = qhov tsawg dua ntawm 0.75 nti2[500 hli]2] thiab thaj tsam hla ntawm cov qauv kuaj kev nruj, xam siv qhov txoj kab uas hla sab nraud ntawm cov yeeb nkab, lossis qhov dav nominal ntawm cov qauv kuaj kev nruj thiab qhov tuab phab ntsa ntawm cov yeeb nkab, nrog rau tus nqi xam uas tau muab sib npaug rau qhov ze tshaj plaws 0.01 hauv2 [1 hli2].
U = lub zog tensile tsawg kawg nkaus uas tau teev tseg, psi [MPa].
Lus Cim BSaib Rooj X4.1 lossis Rooj X4.2, qhov twg siv tau, rau cov nqi elongation tsawg kawg nkaus uas xav tau rau ntau yam kev sib xyaw ua ke ntawm qhov loj me ntawm cov qauv kuaj thiab lub zog tensile tsawg kawg nkaus.
Kev Ntsuas Khoov
Rau cov yeeb nkab DN ≤ 50 [NPS ≤ 2], ib qho ntev txaus ntawm cov yeeb nkab yuav tsum muaj peev xwm khoov txias los ntawm 90 ° nyob ib puag ncig lub mandrel cylindrical, qhov txoj kab uas hla uas yog kaum ob npaug ntawm qhov txoj kab uas hla sab nraud ntawm cov yeeb nkab, yam tsis muaj kev tawg ntawm ib feem twg thiab yam tsis qhib qhov vuam.
Ob npaug-ntxiv-muaj zog(qib hnyav:XXS) cov yeeb nkab hla DN 32 [NPS 1 1/4] tsis tas yuav raug kuaj xyuas khoov.
Kev Ntsuas Kom Sib Nqus
Qhov kev sim ua kom tiaj tus yuav tsum ua rau ntawm cov yeeb nkab welded tshaj DN 50 hauv qhov hnyav ntxiv (XS) lossis sib dua.
Haum rau Hom E, Qib A thiab B; thiab Hom F, Qib B raj.
Cov kav hlau tsis muaj seamless tsis tas yuav tsum tau kuaj.
Lub Sijhawm Xeem
Rau txhua qhov loj ntawm Hom S, Hom E, thiab Hom F Qib B kav dej, qhov siab sim yuav tsum tswj hwm tsawg kawg yog 5 vib nas this.
Yuav tsum tau siv qhov kev sim hydrostatic, yam tsis muaj kev xau los ntawm cov weld seam lossis lub cev yeeb nkab.
Kev Ntsuas Siab
Cov yeeb nkab tiaj tiajyuav tsum tau kuaj hydrostatically rau qhov siab siv tau muab rau hauvRooj X2.2,
Cov yeeb nkab threaded thiab coupledyuav tsum tau kuaj hydrostatically rau qhov siab siv tau muab rau hauvRooj X2.3.
Rau cov kav hlau nrog DN ≤ 80 [NPS ≤ 80], qhov siab sim yuav tsum tsis pub tshaj 17.2MPa;
Rau cov kav hlau nrog DN > 80 [NPS > 80], qhov siab sim yuav tsum tsis pub tshaj 19.3MPa;
Cov kev sim siab dua tuaj yeem xaiv tau yog tias muaj cov kev cai tshwj xeeb hauv kev tsim kho, tab sis qhov no yuav tsum tau sib tham ntawm cov chaw tsim khoom thiab cov neeg siv khoom.
Kev cim
Yog tias cov yeeb nkab tau kuaj hydrostatically, lub cim yuav tsum qhia txogkev sim siab.
Cov kev cai hauv qab no siv rau Hom E thiab Hom F Qib B Yeeb Nkab.
Cov yeeb nkab tsis muaj qhov tsis sib xws muaj cov kev cai ntxiv uas tsis tau tham txog hauv daim ntawv no.
Cov Kev Ntsuas
Cov kav dej tsim los ntawm cov tshuab nthuav dav thiab cog lus uas tsis kubDN ≥ 50 [NPS ≥ 2], tuscov vuamhauv txhua ntu ntawm cov yeeb nkab yuav tsum dhau qhov kev sim hluav taws xob uas tsis ua puas tsuaj, thiab txoj kev sim yuav tsum ua raws liE213, E273, E309 lossis E570tus qauv.
Cov kav dej ERW tsim los ntawm lub tshuab txo qhov loj me kub: DN ≥ 50 [NPS ≥ 2]Txhua ntuntawm cov yeeb nkab yuav tsum tau kuaj xyuas tag nrho los ntawm kev sim hluav taws xob uas tsis ua puas tsuaj, uas yuav tsum ua raws liE213, E309, los yogE570cov qauv.
Lus Cim: Lub Tshuab Kub Ncab Ntev yog lub tshuab uas txuas ntxiv ncab thiab nias cov kav hlau los ntawm cov menyuam ntawm qhov kub siab kom kho lawv cov kab uas hla thiab phab ntsa tuab.
Kev cim
Yog tias lub raj tau raug kuaj xyuas tsis puas tsuaj, nws yuav tsum qhia tiasNDEntawm qhov cim.
Pawg neeg
±10%.
Yeeb Nkab DN ≤ 100 [NPS ≤ 4], hnyav ua ib pawg.
Cov kav dej DN > 100 [NPS > 4], hnyav ua ib daim.
Txoj kab uas hla
Rau cov yeeb nkab DN ≤40 [NPS≤ 1 1/2], qhov sib txawv OD yuav tsum tsis pub tshaj ±0.4 hli [1/64 nti].
Rau cov yeeb nkab DN ≥50 [NPS> 2], qhov sib txawv OD yuav tsum tsis pub tshaj ± 1%.
Qhov tuab
Qhov tsawg kawg nkaus phab ntsa thickness yuav tsum tsis pub tsawg dua87.5%ntawm qhov tuab ntawm phab ntsa uas tau teev tseg.
sib dua li qhov hnyav ntxiv-muaj zog (XS):
a) cov yeeb nkab tiaj tiaj: 3.66 - 4.88m [12 - 16 ft], Tsis pub ntau tshaj 5% ntawm tag nrho cov lej.
b) ob chav ntev random: ≥ 6.71 m [22 ft], Qhov nruab nrab tsawg kawg nkaus ntev ntawm 10.67m [35 ft].
c) ib qho ntev uas tsis sib xws: 4.88 -6.71m [16 - 22 ft], tsis pub ntau tshaj 5% ntawm tag nrho cov xov ntev uas tau muab faib ua cov sib koom ua ke (ob daim txuas ua ke).
Qhov hnyav hnyav heev (XS) lossis hnyav dua: 3.66-6.71 m [12 - 22 ft], tsis pub ntau tshaj 5% tag nrho ntawm cov yeeb nkab 1.83 - 3.66 m [6 - 12 ft].
Rau ASTM A53 steel yeeb nkab tiav yog muaj nyob rau hauv dub los yog galvanized.
Dub: Cov yeeb nkab hlau uas tsis muaj kev kho saum npoo, feem ntau muag ncaj qha tom qab cov txheej txheem tsim khoom, rau cov ntawv thov uas tsis xav tau kev tiv thaiv xeb ntxiv.
Cov kav dej galvanized yuav tsum ua tau raws li cov kev cai tsim nyog.
Txheej Txheem
Cov zinc yuav tsum tau coated sab hauv thiab sab nraud los ntawm cov txheej txheem kub-dip.
Cov Khoom Siv Raw
Cov zinc siv rau txheej yuav tsum yog txhua qib zinc uas ua raws li cov kev cai ntawm SpecificationASTM B6.
Qhov tsos
Cov yeeb nkab galvanized yuav tsum tsis txhob muaj cov cheeb tsam tsis tau coated, cov pa npuas, cov dej ntws, thiab cov slag loj. Cov pob, cov pob me me, cov pob me me, lossis cov zinc ntau ntau uas cuam tshuam rau kev siv cov khoom siv yuav tsum tsis txhob raug tso cai.
Qhov Nyhav Txheej Galvanized
Yuav tsum txiav txim siab los ntawm kev sim tev tawv raws li txoj kev sim ASTM A90.
Qhov hnyav ntawm cov txheej yuav tsum tsis pub tsawg dua 0.55 kg / m² [1.8 oz / ft²].
ASTM A53 ERW yeeb nkab hlaufeem ntau yog siv rau hauv cov ntawv thov qis mus rau nruab nrab-siab xws li kev tsim kho hauv nroog, kev tsim kho, thiab cov yeeb nkab kho tshuab. Cov xwm txheej siv feem ntau suav nrog kev xa dej, pa dej, cua, thiab lwm yam kua qis-siab.
Nrog kev vuam zoo, lawv tsim nyog rau kev tsim cov haujlwm uas cuam tshuam nrog kev coiling, bending, thiab flanging.
