ASTM A252 Qib 1 yog tus qauv thiab zoo- tsim cov khoom tshwj xeeb rau kev tsim Kauv Submerged Arc Welded (SSAW) steel kav rau kev siv hauv paus.[siv: 1, citation: 6, citation: 9, citation: 10]. Qhov kev sib xyaw ua ke no yog cov khoom lag luam uas muaj los ntawm ntau lub tuam txhab thoob ntiaj teb rau lub teeb -load foundation tej yaam num uas qis tshaj lub zog ntawm ASTM A252 specification yog txaus [citation:3, citation:9].
Lub npe "ASTM A252 Qib 1 Kauv Submerged Arc Yeeb Nkab" sib txuas cov kev nkag - qib zog qib ntawm ASTM A252 piling txuj nrog cov txheej txheem kauv vuam rau loj - txoj kab uas hla, tus nqi - lub hauv paus zoo [citation: 1, citation: 9].
📋 Cov ntsiab lus tseem ceeb rau ASTM A252 Qib 1 SSAW Yeeb Nkab
Cov lus hauv qab no qhia txog cov ntsiab lus tseem ceeb rau cov khoom no, raws li cov ntaub ntawv kev lag luam dav dav [citation: 1, citation: 2, citation: 4, citation: 6, citation: 8, citation: 9, citation: 10].
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | ASTM A252 / A252M ASTM: "Standard Specification for Welded and Seamless Steel Pipe Piles" [citation: 4, citation: 6, citation: 8]. |
| Qib Steel | Qib 1: Qib qis zog qis tshaj hauv ASTM A252 specification, tsim rau lub teeb -load daim ntaub ntawv thiab cov av zoo [citation:4, citation:6, citation:8]. |
| Kev tsim khoom | Spiral Submerged Arc Vuam (SSAW/HSAW/SAWH): Ua los ntawm kub- dov steel coil ntawm chav tsev kub, nrog cov vuam seam khiav tsis tu ncua nyob rau hauv ib tug kauv. Welded siv ob -sided tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud) [citation: 1, citation: 2, citation: 6, citation: 9]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:4, citation:9, citation:10] | Cov pa roj carbon (C):0.26% max Silicon (Si):0.45% max Manganese (Mn):1.6% max Phosphorus (P):0.05% max Sulfur (S):0.03% max |
| Mechanical Properties (min) [citation: 4, citation: 6, citation: 8, citation: 9, citation: 10] | Yield zog:205 MPa (30,000 psi) Tensile zog:345 MPa (50,000 psi) Elongation:Ntau dua lossis sib npaug li 30% (rau phab ntsa thickness Ntau dua lossis sib npaug rau 7.9mm) [citation: 4, citation: 9] |
| Hom Loj Ntau Yam [citation: 1, citation: 2, citation: 4, citation: 7, citation: 9, citation: 10] | Sab nraud txoj kab uas hla:168.3 mm txog 4064 mm (kwv yees . 6" rau 160") [citation: 1, citation: 2, citation: 4, citation: 7, citation: 9] Phab ntsa Thickness:3.2 hli mus rau 50.8 hli (ntau ntau 5-30 hli) Ntev:3 m txog 50 m (customizable, mus txog 70 m muaj) [citation: 1, citation: 2, citation: 4, citation: 6, citation: 9] |
| Cov ntsiab lus tseem ceeb ntawm kev xeem [citation: 1, citation: 2, citation: 4, citation: 7, citation: 9] | Tshuaj ntsuam xyuas; xeem tensile; flattening xeem; khoov kuaj; hydrostatic test (txhua lub yeeb nkab); tsis yog- kuaj kev puas tsuaj (ultrasonic lossis X-ray ntawm weld seam - qauv xyaum); kev tshuaj xyuas qhov ntev; kev tshuaj xyuas qhov muag. |
| Cov ntawv thov dav [citation: 3, citation: 6, citation: 8, citation: 9] | Lub teeb-Load foundation pawg rau cov tsev nyob thiab cov tsev lag luam me [citation:6, citation:9]; ib ntus shoring thiab excavation txhawb; choj hauv paus rau cov qauv me me [citation:6, citation:8]; marine qauv nyob rau hauv tsis yog- thaj chaw tseem ceeb ; zoo av tej yam kev mob nrog txaus bearing muaj peev xwm. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 Hom 3.1Blos yog sib npaug, nrog rau tag nrho cov qhabnias xeem thiab cov ntaub ntawv traceability [citation:1, citation:7, citation:9, citation:10]. |
📊 ASTM A252 Qib Sib Piv
Qib 1 yog qhov nkag- qib zog qib hauv ASTM A252 specification. Cov lus hauv qab no qhia txog nws txoj hauj lwm txheeb ze rau Qib 2 thiab 3 [citation: 4, citation: 6, citation: 8, citation: 9, citation: 10]:
| Qib | Yield zog (min) | Tensile zog (min) | Elongation (min) | Cov txheeb ze zog vs. Qib 1 | Daim ntawv thov |
|---|---|---|---|---|---|
| Qib 1 | 205 MPa (30,000 psi) | 345 MPa (50,000 psi) | 30% | Lub hauv paus | Lub teeb -load daim ntawv thov, cov av zoo, cov qauv ib ntus[siv: 4, citation: 6, citation: 9] |
| Qib 2 | 240 MPa (35,000 psi) | 414 MPa (60,000 psi) | 25% | +17% tawm | General piling applications - TSEEM CEEB [citation:4, citation:6, citation:8] |
| Qib 3 | 310 MPa (45,000 psi) | 455 MPa (66,000 psi) | 20% | +51% tawm | Hnyav-load daim ntawv thov, txuas hniav loj, offshore platforms [citation:4, citation:6, citation:8] |
Kev nce feem pua:Qib 3 muaj kwv yees li51% siab zog tawm los ntawm Qib 1[qhia: 4, citation: 6].
📏 Dimensional Specifications
ASTM A252 qhia txog cov kev kam rau siab hauv qab no rau cov kav dej SSAW [citation: 4, citation: 9]:
| Parameter | Ua siab ntev |
|---|---|
| Sab nraud txoj kab uas hla | ± 1.0% ntawm txoj kab uas hla |
| Phab ntsa Thickness | +15.0%, -12.5% ntawm nominal |
| Nyhav ib ko taw | +15.0%, -5.0% |
| Length (ntev ntev) | +25mm / -0mm feem ntau |
| Xaus Xaus | Plain kawg tus qauv; beveled xaus rau kev vuam (30℃kaum sab xis, 1.6mm hauv paus ntsej muag) muaj [citation: 1, citation: 6, citation: 9] |
Standard Diameter Range rau SSAW:168.3mm txog 4064mm (6 "mus rau 160") [citation: 1, citation: 2, citation: 4, citation: 7, citation: 9, citation: 10]
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
Dab tsi "ASTM A252 Qib 1" txhais tau tias: Qhov no yog qhov nkag - qib qib rau steel yeeb nkab pawg raws li tus qauv ASTM A252. Nrog yam tsawg kawg nkaus tawm lub zog ntawm30,000 psi (205 MPa), nws yog tsim los rau lub teeb - load foundation daim ntaub ntawv nyob rau hauv zoo av tej yam kev mob uas tsis muaj zog ntau dua yuav tsum [citation:4, citation:6, citation:9].
Vim li cas thiaj xaiv Qib 1?Qib 1 yog qhov kev xaiv pheej yig tshaj plaws rau kev siv piling, xaiv thaum [citation:6, citation:9]:
Lub teeb structural foundations rau vaj tse nyob los yog lag luam
Cov av zoo uas muaj peev xwm txaus (tsawg dua lossis sib npaug li 120 kN / m²)
Kev them nyiaj yug ib ntus shoring thiab excavation
Cov choj me me uas tsis muaj kev thauj khoom loj
Tsis yog - cov ntawv thov tseem ceeb
SSAW Qhov Zoo rau Qib 1: Cov txheej txheem welding muab cov txiaj ntsig tshwj xeeb rau qhov loj - txoj kab uas hla, tus nqi- siv tau Qib 1 pawg [citation:1, citation:2, citation:6, citation:9]:
Loj Loj Muaj peev xwm: Muaj peev xwm tsim cov kav dej ntawm 6 "mus rau 160" txoj kab uas hla - zoo tagnrho rau cov ntawv loj - txoj kab uas hla
Nqi Efficiency: Kev lag luam ntau dua li LSAW lossis seamless rau cov kab loj loj
Ntev ntev: Mus txog 50-70m lengths txo cov kev cai splicing teb
Kev Nyuaj Siab: Kauv weld seam disperses kev ntxhov siab ntau tusyees thaum tsav tsheb
Khoom siv tau zoo: Siv tau txoj hlua khi hlau los tsim cov kav loj - txoj kab uas hla ntawm tib lub kauj dav
Nco tseg ntawm NDT Requirements: Tsis zoo li cov txheej txheem siab piping (xws li API 5L lossis GB / T 9711), ASTM A252 uatsis yogmandate 100% NDT ntawm weld seams tshwj tsis yog thov tshwj xeeb los ntawm tus neeg yuav khoom. Txawm li cas los xij, feem ntau cov tuam ntxhab muab 100% ultrasonic lossis X- kev kuaj kab hluav taws xob raws li kev coj ua qauv [citation: 1, citation: 2, citation: 7].
🔧 Kev Tsim Kho Txheej Txheem rau ASTM A252 Qib 1 SSAW Yeeb Nkab
Cov txheej txheem tsim khoom ua raws li cov txheej txheem SSAW ntau lawm [citation: 1, citation: 2, citation: 3, citation: 6, citation: 9]:
| Kauj ruam | Kev piav qhia |
|---|---|
| 1. Kev npaj cov khoom nyoos | Kub-rolled steel coils ntsib ASTM A252 Qib 1 chemistry yuav tsum tau ua theem, tshuaj xyuas, thiab ntug-milled [citation:3, citation:9]. |
| 2. Kauv sib sau | Cov hlau sawb txuas ntxiv tsim rau hauv cov duab cylindrical ntawm lub kaum ntse ntse tshwj xeeb ntawm chav tsev kub siv peb lossis tsib- yob txoj kev siv tshuab [citation:2, citation:9]. |
| 3. Submerged Arc Vuam | Ob chav -sided tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud) tsim cov kauv seam nrog kev nkag mus rau tag nrho [citation: 1, citation: 2, citation: 9]. |
| 4. Tsis yog-Kev kuaj kev puas tsuaj | 100% ultrasonic los yog X-ray soj ntsuam ntawm lub vuam seam yog tus qauv kev xyaum ntawm reputable manufacturers [citation: 1, citation: 2, citation: 7, citation: 9]. |
| 5. Kev Ntsuas Hydrostatic | Txhua cov yeeb nkab ib leeg raug kuaj xyuas kev ncaj ncees (yeem rau ASTM A252; yuav tsum tau teev yog tias xav tau) [citation: 1, citation: 4]. |
| 6. Kev kuaj xyuas tshuab | Kev ntsuam xyuas tensile, kev ntsuam xyuas flattening, thiab khoov kev ntsuam xyuas kom paub tseeb cov khoom [citation: 1, citation: 2, citation: 4]. |
| 7. Kev ua tiav tiav | Xaus npaj (dawb lossis beveled) rau kev sib tsoo hauv teb [citation: 1, citation: 2, citation: 6, citation: 9]. |
| 8. Txheej | Kev xaiv sab nrauv (cov kua roj vanish, bitumen, FBE, 3LPE, thee tar epoxy) muaj rau kev tiv thaiv corrosion [citation: 1, caption: 2, caption: 7, caption: 9]. |
🏭 Daim ntawv thov
ASTM A252 Qib 1 SSAW kav yog siv rau tus nqi -sensitive, lub teeb-load foundation applications [citation:3, citation:6, caption:8, caption:9]:
| Daim ntawv thov | Kev piav qhia | Vim li cas Qib 1 thiaj xaiv |
|---|---|---|
| Cov Tsev Nyob Hauv Tsev | Lub teeb lub hauv paus rau cov tsev thiab cov tsev me me [citation: 6, citation: 9] | Kev xaiv nyiaj txiag tshaj plaws; txaus rau lub teeb loads |
| Ib ntus Shoring | Kev txhawb nqa excavation, ib ntus khaws cov phab ntsa | Tus nqi - zoo rau cov qauv ib ntus |
| Kev txhawb nqa choj me me | Me choj abutments thiab pier foundations [citation: 6, citation: 9] | Muaj zog txaus rau lub teeb choj loads |
| Agricultural Structures | Ua liaj ua teb lub hauv paus, cov cuab yeej txhawb nqa | Kev daws teeb meem rau kev ua liaj ua teb |
| Marine Structures (Tsis yog- tseem ceeb) | Lub teeb docks, piers nyob rau hauv cov dej ntsiag to | Muaj zog txaus nrog txheej txheej |
| Foundation Piles nyob rau hauv zoo av | Competent av tej yam kev mob nrog txaus bearing peev xwm | Tsawg zog tau txais vim av zoo |
📝 Cov ntsiab lus tseem ceeb
Qib 1 vs. Qib siab dua: Qib 1 yog qib qis tshaj plaws tab sis muaj lub zog qis tshaj. Rau feem ntau cov ntawv thov kev ruaj ntseg,Qib 2yog qhov ntau dua thiab pom zoo qib [citation: 4, kab lus: 6, kab lus: 8]. Rau hnyav-load tej yaam num,Qib 3muab lub zog siab tshaj plaws [citation: 4, kab lus: 6].
Thaum xaiv Qib 1[Citation: 6, kab lus: 9]:
Lub teeb- thauj cov ntawv thov nrog lub zog me me
Cov av zoo nrog lub peev xwm txaus
Ib ntus lossis tsis yog - tej yaam num tseem ceeb
Tus nqi - cov ntawv thov nkag siab qhov twg Qib 2 yuav dhau - qhia
Thaum twg xaiv Qib 2 lossis 3[Citation: 4, kab lus: 6, kab lus: 8]:
Qib 2: Feem ntau cov kev siv hauv paus, nruab nrab - nce vaj tsev
Qib 3: Heavy-load tej yaam num, loj txuas hniav, offshore platforms, seismic zones
Kev tiv thaiv corrosion: Rau cov qauv mus tas li, qhia cov txheej txheem tsim nyog raws li ib puag ncig [citation: 1, kab lus: 2, kab lus: 7, kab lus: 9]:
FBE/3 LPE: Rau faus pawg thiab hnyav ib puag ncig
Coal Tar Epoxy: Rau kev siv marine
Galvanized: Rau saum toj no - daim ntawv thov hauv av (OD Tsawg dua lossis sib npaug li 508mm feem ntau)
Bitumen txheej: Rau kev pabcuam faus
Xaus Kev Xaiv Qhov Kawg: Muaj cov kev kho mob kawg suav nrog [citation:1, kab lus:2, kab lus:6, kab lus:9]:
Plain xaus (PE) - tus qauv
Beveled xaus (BE) - rau kev sib tsoo (30℃bevel nrog lub ntsej muag hauv paus)
Threaded nrog coupling - rau mechanical kev sib txuas
Ua kom tiav Specification: Thaum xaj, qhia [citation: 1, kab lus: 2, kab lus: 6, kab lus: 9]:
ASTM A252 Qib 1, SSAW (spiral welded), Loj (OD x WT), Ntev, Xaus Xaus
Cov txheej txheem txheej: [piv txwv li, liab qab, FBE, 3LPE, bitumen]
Txhua qhov kev xav tau ntxiv (kev sim hydrostatic, NDT ntxiv)
📝 Cov ntsiab lus
ASTM A252 Qib 1 Kauv Submerged Arc Welded kavyog atus qauv, muaj kev lag luam, thiab tus nqi - xaiv tau zoorau lub teeb -load foundation piling daim ntaub ntawv raws li ASTM A252 specification [citation:1, caption:3, caption:6, caption:9, caption:10]. Nrog yam tsawg kawg nkaus tawm lub zog ntawm30,000 psi (205 MPa), cov kav dej no muab cov kev daws teeb meem zoo tshaj plaws rau cov hauv paus hauv tsev, shoring ib ntus, kev txhawb nqa choj me me, thiab lwm yam tsis yog - cov ntawv thov tseem ceeb uas tsis tas yuav muaj zog dua qib 2 lossis Qib 3 [citation: 6, kab lus: 9].
Muaj nyob rau hauv diameters los ntawm168mm txog 4000mmnrog phab ntsa thicknesses rau50 hlithiab ntev mus txog70m, cov kav dej no yog tsim los siv tus nqi- cov txheej txheem tsim khoom SSAW tau zoo thaum ua tau raws li qhov yuav tsum tau ua ntawm ASTM A252 specification [citation:1, caption:2, caption:4, caption:7, caption:9, caption:10].
Qib 1 yog qhov nkag- qib zog qib hauv ASTM A252 tsev neeg, muab kwv yees li17% qis zog tawm los ntawm Qib 2thiab51% qis dua Qib 3[Citation: 4, kab lus: 6]. Nws yog lub neej ntawd xaiv raulub teeb- thauj cov ntawv thov hauv cov av zooqhov twg tus nqi optimization yog tus thawj tsav tsheb.
Rau feem ntau cov ntawv thov hauv paus ruaj khov xav tau lub zog nruab nrab,Qib 2yog qhov ntau dua thiab pom zoo qib. Rau hnyav-load tej yaam num uas xav tau lub zog siab tshaj plaws,Qib 3yuav tsum tau teev [citation:4, caption:6, caption:8].
Thaum txiav txim, xyuas kom meej tias koj qhia meej cov qauv ua tiav nrog qib, kev tsim khoom (SSAW), qhov ntev, qhov kawg, thiab cov txheej txheem txheej txheem raws li koj qhov tshwj xeeb daim ntawv thov thiab av tej yam kev mob [citation: 1, caption: 2, caption: 6, caption: 9].
