Txheej txheem cej luam ntawm Peb Cov Qauv Tseem Ceeb
ASTM A106, ASTM A53, thiab API 5L yog peb ntawm cov qauv siv cov yeeb nkab feem ntau siv hauv kev lag luam. Thaum lawv sib koom ua ke, txhua tus qauv tau tsim los rau ib qho kev pabcuam tshwj xeeb thiab muaj cov kev cai sib txawv. ASTM A106 npog seamless carbon steel yeeb nkab rau siab - kev pabcuam kub, A53 npog welded thiab seamless yeeb nkab rau kev pabcuam dav dav, thiab API 5L npog kab yeeb nkab rau roj thiab roj tsheb thauj mus los. Kev nkag siab txog lawv qhov sib txawv yog qhov tseem ceeb rau qhov tseeb specification thiab kev yuav khoom.
Tag nrho peb tus qauv muaj Qib B raws li qib feem ntau, thiab cov tshuaj muaj pes tsawg leeg zoo sib xws. Txawm li cas los xij, qhov sib txawv me me hauv kev txwv chemistry, kev xeem yuav tsum tau ua, thiab kev lees paub zoo muaj qhov cuam tshuam loj rau kev tsim nyog rau daim ntawv thov. Phau ntawv qhia no muab cov ncauj lus kom ntxaws sib piv los pab engineers thiab procurement professionals txiav txim siab paub.
| Parameter | ASTM A106 1 | ASTM A53 | API 5L |
|---|---|---|---|
| Lub Npe | Seamless Carbon Steel rau siab -Tsev Kev Pabcuam | Yeeb, Hlau, Dub thiab Kub-Dipped, Zinc-Coated, Welded thiab Seamless | Kab yeeb nkab rau roj thiab roj tsheb thauj mus los |
| Kev tsim khoom | Seamless nkaus xwb | Seamless los yog Welded (ERW, FW) | Seamless los yog Welded (ERW, LSAW, SSAW) |
| Qib System | Qib A, B, C | Qib A, B | Gr.B, X42-X80 + PSL1/PSL2 |
| Kev Pabcuam Thawj | High -kub kav | Kev thauj dej dav dav | Roj/gas pipelines |
| Max kub | 538 degree | 400℃(ntev) | Nyob ntawm daim ntawv thov |
Kev sib piv kev tsim khoom
A106 yog tshwj xeeb seamless, ua los ntawm kub dov los yog txias daim duab ntawm ib tug pierced billet. Qhov no tshem tawm txhua qhov weld seam, uas yog qhov muaj peev xwm tsis muaj zog. Cov txheej txheem seamless ua rau A106 qhov kev xaiv zoo tshaj plaws rau siab - kub thiab siab - cov ntawv thov siab uas qhov kev ntseeg tsis tuaj yeem lav tau. Txawm li cas los xij, seamless yeeb nkab yog kim dua thiab txwv nyob rau hauv qhov siab tshaj plaws txoj kab uas hla (feem ntau 24 "rau cov qauv tsim, nrog rau qee lub mills muaj peev xwm txog li 48").
A53 tso cai rau ob leeg seamless (Hom S) thiab welded manufacturing. Welded xaiv muaj xws li hom E (Electric Resistance Welded, ERW) thiab Hom F (Lub Rauv Butt Welded, nruam weld). Hom F yog txwv rau qhov me me thiab tsis tshua muaj niaj hnub no. ERW yeeb nkab muaj tus nqi - siv tau zoo dua rau seamless rau cov ntawv thov kev pabcuam. Lub vuam seam nyob rau hauv niaj hnub ERW yeeb nkab yog txhim khu kev qha thiab muaj peev xwm ua tau siab sib koom ua hauj lwm zoo thaum tshav kub zoo- kho thiab tshuaj xyuas.
API 5L yog qhov hloov tau yooj yim tshaj plaws, tso cai rau seamless, ERW, LSAW (Longitudinal Submerged Arc Vuam), thiab SSAW (kauv Submerged Arc Vuam) kev tsim khoom. Cov txheej txheem no tso cai rau API 5L yeeb nkab ua los ntawm 1/2 "txog 80" inch. LSAW thiab SSAW yog cov txheej txheem tseem ceeb rau loj - txoj kab uas hla kab yeeb nkab (24 "thiab saum toj no), siv cov hlau phaj welded nrog submerged arc vuam.
Chemical & Mechanical Properties
Thaum tag nrho peb tus qauv muaj Qib B, cov tshuaj muaj pes tsawg leeg sib txawv hauv kev hloov maj mam tab sis tseem ceeb. Cov lus hauv qab no qhia txog qhov sib txawv tseem ceeb:
| Element (max %) | A106 Gr.B | A53 Gr.B | API 5L Gr.B |
|---|---|---|---|
| Cov pa roj carbon | 0.30 | 0.30 | 0.28 (PSL1) / 0.24 (PSL2) |
| Manganese | 0.29-1.06 | 1.20 | 1.20 (PSL1) / 1.40 (PSL2) |
| Phosphorus | 0.035 | 0.050 | 0.030 (PSL2) |
| Sulfur | 0.035 | 0.045 | 0.030 (PSL2) |
| Silicon | 0.10 min | Tsis xav tau | Tsis xav tau (PSL1) / 0.40 max (PSL2) |
Mechanically, tag nrho peb cov qauv yuav tsum muaj qhov tsawg kawg nkaus lub zog ntawm kwv yees li 240 MPa (35,000 psi) rau Qib B thiab lub zog tensile yam tsawg kawg nkaus ntawm kwv yees li 415 MPa (60,000 psi). API 5L PSL2 muaj cov tseev kom muaj ntxiv nrog rau qhov siab tshaj plaws tawm los lub zog (kom tiv thaiv dhau - sib piv hauv cov khoom siv vuam), qhov tsawg kawg nkaus CVN cuam tshuam rau lub zog muaj nuj nqis, thiab kev ua siab ntev dua. A106 muaj qhov tso cai rau qhov kev ntxhov siab hauv ASME Tshooj II rau siab - qhov kub thiab txias tsim, uas A53 thiab API 5L tsis muaj (txawm tias API 5L tuaj yeem siv rau ASME B31.3 siv nws qhov tsawg kawg nkaus yield zog).
Daim ntawv thov scenarios - Qhov twg xaiv?
High-temperature service (>400 degree):Xaiv ASTM A106. Nws tau hais meej meej suav nrog hauv ASME Tshooj II Ntu D nrog qhov tso cai rau kev ntxhov siab ntawm qhov kub txog li 538 degree. A106 kuj tseem muaj qhov yuav tsum tau ua silicon yam tsawg kawg nkaus (0.10%) uas txhim kho siab -kub oxidation kuj. Rau cov kev xav tau ntawm cov hlau alloy ntawm qhov kub siab dua, saib peb Cov Yeeb Nkab Alloy Cov Lus Qhia.
Kev thauj dej dav dav:A53 muab tus nqi - zoo rau cov dej, huab cua, chav dej, thiab lwm yam dej dav dav ntawm qhov kub nruab nrab. Nws muaj nyob rau hauv ob qho tib si welded thiab seamless cov ntaub ntawv muab tau yooj yim rau txawv txoj kab uas hla thiab siab yuav tsum tau. A53 Hom E (ERW) yeeb nkab feem ntau yog 5-10% qis dua seamless A106.
Roj thiab roj pipelines:API 5L yog tus qauv xaiv. Nws suav nrog cov kev xav tau ntawm pob txha toughness (CVN cuam tshuam kev sim) uas yog qhov tseem ceeb rau kev ncaj ncees ntawm cov kav dej tiv thaiv kev tawg tawg tawg. API 5L kuj tau hais nyob rau hauv US cov cai tswj kev nyab xeeb (49 CFR Part 192 thiab 195). PSL2 qhov kev tsim nyog ntxiv cov kev xav tau ntxiv rau kev tswj cov tshuaj lom neeg muaj pes tsawg leeg, NDT, thiab kev sim cuam tshuam.
Interchangeability xav txog:A106 Gr.B feem ntau tuaj yeem hloov pauv rau A53 Gr.B vim tias nws ua tau raws lossis dhau A53 qhov yuav tsum tau ua, tab sis qhov thim rov qab tsis yog ib txwm siv tau vim tias A53 yuav tsis ua raws li qhov yuav tsum tau ua silicon lossis muaj qhov siab tib yam - qhov kub thiab txias tso cai rau kev ntxhov siab. API 5L Gr.B yog tshuaj zoo ib yam li A106 Gr.B tab sis yuav xav tau kev kuaj ntxiv (silicon tsom xam rau A106 chemistry). Nco ntsoov xyuas nrog tus kws tshaj lij engineers ua ntej hloov pauv.
Size Range & Supply
A106 muaj nyob rau hauv seamless daim ntawv los ntawm 1/4 "NB mus rau 48" OD, tab sis cov qauv zeb ntau lawm feem ntau npog 1/2 "mus rau 24". Cov kab loj dua (26 "-48") yog muaj los ntawm cov mills tshwj xeeb tab sis nrog lub sij hawm ntev dua. A53 seamless yog muaj los ntawm 1/8 "mus rau 26", nrog ERW npog 1/2 "mus rau 26". API 5L muaj qhov dav dav tshaj plaws vim muaj cov txheej txheem LSAW thiab SSAW rau cov kab loj loj. LSAW yeeb nkab feem ntau yog tsim los ntawm 16 "mus rau 60" OD, thaum SSAW yeeb nkab txuas los ntawm 16 "mus rau 80" thiab tshaj. ManufacturerPipe muab tag nrho peb cov qauv thoob plaws lawv qhov loj me.
Ntawv pov thawj & Standards
Mill Test Certificate (MTC) rau A106 thiab A53 ua raws li ASTM A530 / A999 cov kev cai, suav nrog kev ntsuas kub, cov khoom siv tshuab, thiab cov txiaj ntsig kev xeem. API 5L MTCs suav nrog cov ntaub ntawv ntxiv rau API Spec 5L, suav nrog CVN cuam tshuam cov txiaj ntsig rau PSL2 thiab kev ntsuas kev pabcuam qaub rau NACE MR0175 / ISO 15156 thaum tau teev tseg. Tag nrho peb cov qauv tuaj yeem raug lees paub raws li EN 10204 3.1 lossis 3.2 nrog rau thib peb- kev tshuaj xyuas tog. Rau cov ntawv thov kev pabcuam qaub (ntub H2S), API 5L cov kav dej tuaj yeem raug txiav txim rau NACE MR0175 / ISO 15156 nrog rau cov hardness ntxiv thiab SSC (sulfide stress cracking) testing.
Tus nqi sib piv
A106 feem ntau hais kom tus 5-15% tus nqi tshaj A53 vim yog kev tsim khoom nruj dua (kev sib txuas tsuas yog, cov ntsiab lus silicon, ntsuas kub). API 5L PSL1 feem ntau piv rau A53 hauv tus nqi, thaum PSL2 ntxiv 10-20% vim muaj kev sim ntxiv thiab kev tswj xyuas nruj dua. Tus nqi sib txawv ntawm seamless thiab welded yeeb nkab yog qhov tseem ceeb tshaj li tus qauv nws tus kheej: seamless feem ntau yog 20-40% kim dua ERW rau tib qhov loj thiab qib.
Xaiv Kev Txiav Txim Ntoo
Kauj ruam 1: Determine operating temperature. If >400 degree, xaiv A106 lossis A335 (alloy steel).Kauj ruam 2:Txiav txim siab cov kua nruab nrab. Rau cov roj / roj pipeline kis tau tus mob, xaiv API 5L. Rau kev thauj cov kua dej dav dav, A53 yog qhov tsim nyog.Kauj Ruam 3:Txiav txim siab tias seamless yuav tsum tau los ntawm code los yog daim ntawv thov. Rau siab - siab los yog cyclic kev pab cuam, seamless tej zaum yuav nyiam.Kauj Ruam 4:Xav txog seb PSL2 qhov yuav tsum tau muaj (CVN cuam tshuam, chemistry nruj dua, NDT) yog xav tau raws li kev soj ntsuam kev pheej hmoo thiab cov cai siv tau.
Vim Li Cas Xaiv Peb
ManufacturerPipe muab ib qho - tso tseg rau tag nrho peb cov kav dej. Peb tuav cov khoom muag ntau ntawm A106 Gr.B, A53 Gr.B, thiab API 5L Gr.B txog X70 hauv ob qho tib si seamless thiab welded daim ntawv. Tag nrho cov yeeb nkab yog muab los ntawm MTC tiav thiab tuaj yeem yog thib peb - tog tshuaj xyuas los ntawm SGS, BV, lossis Intertek ntawm koj qhov kev thov. Peb pab neeg ua haujlwm engineering tuaj yeem pab tshawb nrhiav cov lus nug hloov pauv thiab xyuas kom koj tus qauv xaiv ua tau raws li txhua qhov kev cai siv tau.
Xav Tau Kev Pab Xaiv Ntawm A106, A53, lossis API 5L?
Hu rau peb pab pawg engineering rau cov kws tshaj lij kev taw qhia txog kev xaiv tus qauv thiab tus nqi sib tw.
