Electric Resistance Welded carbon steel kav yog dav siv nyob rau hauv kev tsim kho, roj thiab roj kis tau tus mob, dej mov systems, mechanical engineering, thiab structural applications. Txawm hais tias lub hauv paus ntsiab lus ntawm ERW cov kav dej zoo ib yam li thoob ntiaj teb, cov txheej txheem kev cai tswj hwm cov tshuaj muaj pes tsawg leeg, kev ua haujlwm zoo, kev ua siab ntev, cov txheej txheem tshuaj xyuas, thiab kos npe sib txawv nyob ntawm seb cov txheej txheem siv tau. Nkag siab txog qhov sib txawv ntawm ASTM, API, EN, thiab GB cov qauv pab engineers thiab buyers xaiv qhov tseeb specification rau lawv tej yaam num thiab xyuas kom meej cov kev cai raws li nyob rau hauv lub thoob ntiaj teb kev lag luam.
Cov qauv ua ntau tshaj li qhov loj lossis lub zog; lawv tsim kom muaj kev nyab xeeb yam tsawg kawg nkaus, cov txheej txheem kuaj, thiab cov ntaub ntawv pov thawj zoo. Txhua qhov system qhia txog kev ua lag luam hauv cheeb tsam thiab kev siv ua ntej.
ASTM Cov Qauv rauERW Carbon Steel Yeeb Nkab
General Industrial thiab Structure Applications
ASTM system, tsim los ntawm ASTM International, tau siv dav hauv North America thiab thoob ntiaj teb lees paub. Rau ERW carbon steel kav, ASTM cov qauv muaj xws li ASTM A53 thiab ASTM A500. ASTM A53 npog ob qho tib si seamless thiab welded kav npaj rau kev siv tshuab thiab kev siv siab, thaum ASTM A500 feem ntau siv rau cov qauv tubing.
ASTM cov qauv feem ntau hais txog cov tshuaj muaj pes tsawg leeg txwv, lub zog tensile, lub zog tawm los, kev sim hydrostatic, thiab qhov ntev ntev. Piv txwv li, ASTM A53 Qib B qhia qhov tsawg kawg nkaus tensile thiab yield zog qhov tseem ceeb uas haum rau dav - lub hom phiaj piping systems.
ASTM cov qauv kuj tseem txhais cov txheej txheem tsim khoom siv tau, suav nrog ERW vuam txoj kev, kev kho cua sov uas siv tau, thiab cov kev xaiv kuaj tsis muaj kev puas tsuaj.
Kev ntsuas kub thiab ntsuas kub
Hauv kev siv siab, ASTM cov qauv feem ntau ua raws li ASME cov lej rau cov hlab ntsha thiab cov kav dej. Ua raws li cov qauv no ua kom muaj kev sib raug zoo nrog boilers, txheej txheem piping, thiab kev teeb tsa hauv kev lag luam.
API Standards for Pipeline Applications
Tsom ntsoov rau Kev Siv Roj thiab Roj
API system, tsim los ntawm American Petroleum Institute, feem ntau hais txog kev lag luam roj av thiab roj av. API 5L yog tus txheej txheem tswj hwm cov kav dej, suav nrog ERW carbon steel kav siv hauv cov kav dej.
Piv nrog rau ASTM, API cov qauv muab qhov tseem ceeb tshaj plaws ntawm kev puas ntsoog toughness, cuam tshuam kev kuaj, weld seam tshuaj xyuas, thiab traceability. Txij li thaum cov kav dej tsis ua haujlwm tuaj yeem muaj qhov cuam tshuam loj rau ib puag ncig thiab kev nyab xeeb, API cov kev cai feem ntau nruj dua nyob rau hauv cov nqe lus ntawm kev tswj kom zoo thiab kev tshawb xyuas kev ua haujlwm zoo.
API 5L faib cov kav dej rau hauv cov qib sib txawv xws li Qib B, X42, X52, thiab qib siab zog. Cov qib no suav nrog qhov tsawg kawg nkaus qhov kev xav tau ntawm lub zog, ua kom haum rau qhov sib txawv ntawm qhov siab.
Cov lus hauv qab no piv cov yam ntxwv ntawm ASTM thiab API systems rau ERW carbon steel kav.
| Standard System | Daim ntawv thov tseem ceeb | Kev faib tawm zog | Kev Ntsuas Ntsuas | Hom kev lag luam |
|---|---|---|---|---|
| ASTM | Kev tsim qauv & dav dav | Qib-raws li (A, B, thiab lwm yam) | Mechanical & Hydrostatic | Kev tsim kho, kev siv hluav taws xob |
| API 5L | Roj & roj pipelines | X-series (X42–X70+) | Toughness & weld seam soj ntsuam | Kev xa hluav taws xob |
| EN | European industrial siv | S-series & P-series | Kev ua raws li cov khoom siv siab | EU infrastructure |
| GB | Suav teb chaws system | Q-series & L-series | National Industrial Codes | Domestic & export kev lag luam |
Qhov kev sib piv no qhia txog tias daim ntawv thov tsom mus rau qhov yuav tsum tau ua li cas.
EN Cov Qauv hauv European System
Siab thiab cov qauv kev faib tawm
Cov qauv European, feem ntau raug xaiv los ua EN cov qauv, yog tsim los ntawm European Committee for Standardization. Rau ERW carbon steel kav, EN 10219 thiab EN 10217 nquag siv.
EN 10219 siv rau txias -tsim welded structural hollow seem, thaum EN 10217 hais txog welded steel raj rau lub hom phiaj siab. Cov txheej txheem European categorize cov qib steel siv cov npe xws li S235, S275, lossis P235, qhov twg tus lej qhia qhov tsawg kawg nkaus tawm lub zog hauv megapascals.
EN cov qauv feem ntau koom ua ke ua raws li Cov Lus Qhia Cov Khoom Siv Siab, xav tau kev taug qab, cov ntaub ntawv pov thawj, thiab cov txheej txheem tswj xyuas kom zoo. Kev sim cuam tshuam thiab tsis yog - qhov yuav tsum tau ua kom puas tsuaj yuav txawv nyob ntawm qhov kev pabcuam.
Kev sib haum xeeb thoob plaws EU Kev Lag Luam
Ib qho txiaj ntsig ntawm EN cov qauv yog kev tswj hwm kev sib haum xeeb thoob plaws European Union cov tswv cuab lub xeev. Ua raws li kev lees paub thoob plaws EU yam tsis muaj ntawv pov thawj ntxiv hauv tebchaws.
GB Standards nyob rau hauv Suav System
National Industrial Requirements
GB cov qauv sawv cev rau lub teb chaws tus qauv system ntawm Tuam Tshoj. Cov lus qhia tshwj xeeb rau ERW carbon steel kav suav nrog GB / T 3091 rau qis - kev thauj mus los ntawm cov kua dej siab thiab GB / T 9711 rau cov kav xa dej.
GB / T 9711 yog dav ua raws li API 5L, tshwj xeeb tshaj yog rau kev siv kav dej. Txawm li cas los xij, tej zaum yuav muaj qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg txwv, kev soj ntsuam zaus, thiab cov ntaub ntawv tawm tswv yim.
Suav cov qauv feem ntau qhia cov ncauj lus kom ntxaws txog kev tsim khoom thiab cov txheej txheem tshuaj xyuas raws li kev coj ua hauv tsev. Export-cov khoom siv taw qhia feem ntau ua raws li GB specifications nrog thoob ntiaj teb sib npaug kom ntseeg tau tias muaj kev sib raug zoo.
Cov lus hauv qab no qhia txog cov qauv kev xaiv neeg sawv cev thiab lawv cov kev ua haujlwm tseem ceeb.
| Txuj | Hom yeeb nkab | Ntsiab Technical Focus | Common ERW Application |
|---|---|---|---|
| ASTM A53 | Welded & seamless | General mechanical zog | Kev tsim kho & kev siv hluav taws xob |
| API 5L | Kab yeeb | Pipeline kev nyab xeeb & toughness | Roj & roj kis tau tus mob |
| TS EN 10219 | Cov qauv welded | Kev ua raws li tus qauv muaj zog | Hlau ncej |
| TS EN 10217 | Siab welded | Cov cuab yeej siv siab sib haum | Industrial kav dej |
| GB/T 3091 | Welded yeeb nkab | Tsawg-kev thauj cov kua dej | Dej & roj |
| GB/T 9711 | Kab yeeb | Pipeline engineering | Zog infrastructure |
Cov txheej txheem no qhia tau hais tias cov txheej txheem sib txawv ua raws li cov kev xav tau hauv cheeb tsam engineering.
Cov Txheej Txheem Tseem Ceeb Ntawm Cov Qauv
Mechanical Property Requirements
Thaum cov txiaj ntsig thiab lub zog tensile yuav tshwm sim zoo sib xws nyob rau hauv cov qauv, API thiab EN cov qauv siab feem ntau suav nrog kev ntsuas nruj dua ntawm qhov ntsuas kub. ASTM structural qib yuav tsis tas yuav tsum tau qis- ntsuas qhov ntsuas kub tshwj tsis yog tias tau teev tseg.
Kev soj ntsuam thiab kuaj cov txheej txheem
API cov qauv feem ntau tswj tsis tau -kev kuaj kev puas tsuaj ntawm vuam seams siv ultrasonic lossis radiographic txoj kev. ASTM cov kev cai yuav tso cai rau kev kuaj hydrostatic yam tsis tas yuav tsum kuaj radiographic nyob ntawm qib. EN cov qauv feem ntau xav tau cov ntaub ntawv ntsuas kev ua raws li European txoj cai tswj hwm.
Marking thiab Certification
Txhua lub kaw lus txhais cov cim kev sib tham thiab cov ntaub ntawv pov thawj cov ntaub ntawv. API cov kav dej feem ntau muaj cov ncauj lus kom ntxaws ntxaws, thaum EN cov qauv yuav xav tau CE cim rau kev ua raws li European Union.
Xaus
Cov qauv siv tau rau ERW carbon steel kav sib txawv ntawm ASTM, API, EN, thiab GB systems, uas cuam tshuam txog kev lag luam sib txawv thiab cov txheej txheem tswj hwm. ASTM cov qauv tsom mus rau kev ua haujlwm dav dav rau kev tsim cov kav dej thiab kev lag luam, thaum API hais txog kev nyab xeeb ntawm cov kav dej thiab cov tawv nqaij hauv cov roj thiab cov pa xa mus. EN cov qauv sib xyaw ua ke cov cuab yeej siv siab ua raws li European cov cai, thiab GB cov qauv ua raws li cov cai hauv Suav teb thaum tswj kev sib raug zoo nrog kev lag luam thoob ntiaj teb. Kev xaiv tus qauv tsim nyog yuav tsum nkag siab qhov chaw nyob hauv qhov project, hom ntawv thov, cov luag haujlwm tswj hwm, thiab kev cia siab ua haujlwm. Los ntawm kev ua tib zoo ntsuas qhov sib txawv no, cov kws tsim khoom thiab cov kws tshaj lij tuaj yeem ua kom muaj kev nyab xeeb, ua raws, thiab tsim cov kav dej kom zoo.
