ASTM A53 Qib B yog cov khoom siv dav tshaj plaws thiab dav siv rau kev tsim Kauv Submerged Arc Welded (SSAW) steel kav. Qhov kev sib xyaw ua ke no yog tus qauv, "cov neeg ua haujlwm" cov khoom lag luam muab los ntawm ntau lub tuam txhab thoob ntiaj teb rau ntau yam dav dav ntawm - lub hom phiaj, qis - mus rau - nruab nrab cov kua xa hluav taws xob thiab kev siv cov qauv.
Lub npe "ASTM A53 Qib B Kauv Submerged Arc Yeeb Nkab" sib txuas cov khoom siv nrov tshaj plaws (Qib B) ntawm ASTM A53 specification nrog cov txheej txheem kev lag luam welding rau loj - txoj kab uas hla, txhim khu kev qha, thiab tus nqi- cov kav dej zoo.
📋 Cov Lus Qhia Tseem Ceeb rau ASTM A53 Qib B SSAW Yeeb Nkab
Cov lus hauv qab no qhia txog cov ntsiab lus tseem ceeb rau cov khoom no, raws li cov ntaub ntawv qhia kev lag luam.
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | ASTM A53 / ASME SA53: "Standard Specification for Pipe, Steel, Dub thiab Kub-Dipped, Zinc-Coated, Welded thiab Seamless". |
| Khoom Qib | Qib B: Tus qauv thiab feem ntau qib. Nws muaj lub zog ntau dua li Qib A, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau feem ntau kev lag luam thiab kev siv dav dav -cov phiaj xwm siv . |
| Kev tsim khoom | Spiral (Helical) Submerged Arc Vuam (SSAW / HSAW): Ua los ntawm kub- dov steel coil, nrog cov vuam seam khiav tsis tu ncua nyob rau hauv ib tug kauv raws cov yeeb nkab ntev. Welded siv ob -sided tsis siv neeg submerged arc vuam (DSAW). |
| Chemical Composition (Max%) | Cov pa roj carbon (C): 0.30% Manganese (Mn): 1.20% Phosphorus (P): 0.05% Sulfur (S): 0.045% |
| Mechanical Properties (min) | Yield zog: 241 MPa (35,000 psi) Tensile zog: 414 MPa (60,000 psi) |
| Hom Loj Loj | Sab nraud txoj kab uas hla:219mm txog 4064mm (kwv yees . 8" rau 160") Phab ntsa Thickness:3.2mm txog 50mm (ntau ntau 5-25.4mm) Ntev:3 m rau 18 m txheem; mus txog 50 m muaj rau cov ntawv thov tshwj xeeb |
| Cov Kev Ntsuas Tseem Ceeb | Hydrostatic Test:Txhua cov yeeb nkab ib leeg kuaj ib tus qauv ASTM A53 . Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT) : 100% kev soj ntsuam ntawm kauv weld seam(feem ntau yog ultrasonic (UT) lossis X-ray) yog cov qauv kev lag luam. Tensile Test:Txheeb xyuas qhov tawm los thiab lub zog tensile. Flattening thiab Khoov Test:Txheeb xyuas qhov ductility thiab weld kev ncaj ncees. |
| Cov ntawv thov siv | Tsawg- mus rau - Nruab Nrab Siab Siab Tshaj Tawm:Dej, chav, cua, roj, thiab slurry kab. Structure & Piling:Foundation piling, caissons, structural kem, thiab moj khaum. General Utility Piping:Industrial cog piping, municipal dej mov, hluav taws xob tiv thaiv systems. Kev tsim vaj tsev thiab kev siv tshuab . |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 Hom 3.1los yog sib npaug, nrog tag nrho cov txiaj ntsig kev xeem thiab cov ntaub ntawv traceability . |
📊 ASTM A53 Qib Sib Piv
Qib B yog qhov kev xaiv tseem ceeb rau feem ntau daim ntawv thov. Cov lus hauv qab no qhia txog nws txoj haujlwm txheeb ze rau Qib A:
| Qib | Yield zog (min) | Tensile zog (min) | Sib txheeb Strength vs. Qib A | Daim ntawv thov |
|---|---|---|---|---|
| A | 205 MPa (30,000 psi) | 330 MPa (48,000 psi) | -17% yield | Tsawg- dej siab, qauv, kev siv hluav taws xob, laj kab |
| B | 241 MPa (35,000 psi) | 414 MPa (60,000 psi) | Lub hauv paus | Cov kev pabcuam dav dav, chav dej, roj, thiab roj kab - TSIS MUAJ |
📏 Dimensional Specifications
ASTM A53 qhia txog cov kev kam rau siab hauv qab no rau SSAW kav:
| Parameter | Ua siab ntev |
|---|---|
| Sab nraud Diameter (NPS 2 thiab loj dua) | ± 1.0% ntawm txoj kab uas hla |
| Phab ntsa Thickness | ± 12.5% ntawm nominal (tsawg kawg phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis txhob ntau tshaj 12.5% nyob rau hauv nominal) |
| Nyhav ib ko taw | ±10% |
| Xaus Xaus | Plain kawg (PE) tus qauv; beveled kawg (BE) rau phab ntsa thickness> 4mm feem ntau muaj |
Standard Diameter Range rau SSAW:219mm txog 4000mm (8 "mus rau 160")
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
Dab tsi "ASTM A53 Qib B" txhais tau tias: Qhov no yog tus qauv carbon steel qib rau welded thiab seamless yeeb nkab. Nrog qhov tsawg kawg nkaus tawm lub zog ntawm35,000 psi (241 MPa)thiab tensile zog ntawm60,000 psi (414 MPa), nws muaj kev sib xyaw ua ke ntawm lub zog, ductility, thiab weldability, ua rau nws haum rau ntau yam kev siv. Nws yog qhov kev xaiv ua ntej rau kev dav dav -lub hom phiaj kev lag luam piping .
Vim Li Cas Qib B yog Qib "Cov Neeg Ua Haujlwm" Qib: Qib B yog qib feem ntau teev nyob rau hauv tus qauv ASTM A53 vim nws qhov kev pom zoo sib npaug ntawm lub zog, tus nqi, thiab muaj. Nws muaj kwv yees li17% siab tshaj tawm lub zog tshaj Qib A, ua rau nws haum rau ntau qhov dav ntawm kev siv siab thiab cov qauv siv.
SSAW Qhov Zoo rau Qib B: Cov txheej txheem kauv vuam muaj cov txiaj ntsig tshwj xeeb rau - cov kav dej loj:
Loj Loj Muaj peev xwm: Muaj peev xwm tsim cov kav dej mus txog 160 "txoj kab uas hla thiab dhau mus, uas yog qhov tsis zoo rau lwm cov txheej txheem.
Nqi Efficiency: Kev lag luam ntau dua li qhov ntev vuam (LSAW) los yog seamless rau cov diameters loj heev vim kev siv cov khoom siv ntau dua thiab kev ua haujlwm ntau lawm.
Ntev ntev: Txog li 50m ntev txo tus naj npawb ntawm daim teb girth welds xav tau, kev txhim kho kom nrawm.
Kev Tsim Nyog: Cov txheej txheem tso cai rau kev tsim khoom tas mus li, ua rau kev tsim khoom zoo.
Nco tseg ntawm High-Kev Pabcuam Siab: Thaum ASTM A53 Qib B SSAW yeeb nkab yog siv rau qhov nruab nrab siab, nws yog feem ntautsis yogthawj qhov kev xaiv rau qhov tseem ceeb, siab -siab hydrocarbon transmission pipelines (piv txwv li, hla- lub teb chaws cov roj los yog cov kab hluav taws xob). Rau cov kev pabcuam zoo li no, cov qauv zoo liAPI 5L(nrog rau cov tshuaj nruj dua, tawv, thiab kev sim) tau teev tseg, txawm tias muab kauv -welded yeeb nkab .
🔧 Kev tsim khoom rau ASTM A53 Qib B SSAW Yeeb Nkab
Cov txheej txheem tsim khoom ua raws li zoo -tsim SSAW txoj kev tsim khoom:
| Kauj ruam | Kev piav qhia |
|---|---|
| 1. Kev npaj cov khoom nyoos | Kub- dov steel coils ntsib ASTM A53 Qib B chemistry yuav tsum tau ua theem, tshuaj xyuas, thiab ntug-milled . |
| 2. Kauv sib sau | Cov hlau sawb txuas ntxiv tsim rau hauv cov duab cylindrical ntawm lub kaum sab xis tshwj xeeb ntawm chav tsev kub. |
| 3. Submerged Arc Vuam | Muab ob npaug rau-sided tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud) tsim cov kauv seam nrog kev nkag mus rau hauv daim pam ntawm granular flux, kom ntseeg tau qhov zoo ntawm vuam zoo. |
| 4. Tsis yog-Kev kuaj kev puas tsuaj | 100% ultrasonic (UT) lossis X-ray (RT) tshuaj xyuasntawm tag nrho cov weld seam yog txheej txheem kev lag luam xyaum. |
| 5. Kev Ntsuas Hydrostatic | Txhua lub yeeb nkab raug kuaj xyuas tus kheej kom paub tseeb qhov siab ncaj ncees raws li ASTM A53 cov cai. |
| 6. Kev kuaj xyuas tshuab | Kev ntsuas tensile, flattening, thiab khoov yog ua los xyuas cov khoom thiab cov khoom siv vuam. |
| 7. Kev ua tiav tiav | Qhov xaus yog npaj (dawb los yog beveled) rau qhov chaw welding ib specifications . |
| 8. Txheej | Cov txheej txheem sab nraud (cov kua roj vanish, bitumen, FBE, 3LPE) thiab galvanizing (rau cov kab me me) muaj rau kev tiv thaiv corrosion. |
🏭 Daim ntawv thov
ASTM A53 Qib B SSAW kav yog siv rau ntau yam kev siv vim lawv lub zog thiab ntau yam:
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Kev xa dej | Loj - txoj kab nruab nrab hauv nroog cov dej thiab cov kav dej xa mus, cov kav dej . |
| Qauv & Piling | Foundation piling, caissons, structural kem, kev txhawb nqa lub tsev, thiab lub moj khaum. |
| General Utility Piping | Tsawg-rau- nruab nrab siab chav, cua, roj, thiab lwm yam txheej txheem kab hauv cov chaw tsim khoom. |
| Kev Tiv Thaiv Hluav Taws Xob | Hluav taws kub dej mains thiab sprinkler systems. |
| Dej thiab Slurry Kab | Loj - kab kab rau cov kua thiab thauj slurries . |
📝 Cov ntsiab lus tseem ceeb
Qib B vs Qib A: Qib B yog qhovdefault xaiv rau feem ntau daim ntawv thovvim nws lub zog ntau dua thiab muaj dav dua. Qib A tsuas yog txiav txim siab rau qhov tshwj xeeb heev, qis- zog, tus nqi- tsav cov haujlwm .
Cov Lus Qhia Ntxiv: Rau cov haujlwm uas xav tau kev pov hwm ntxiv, tshwj xeeb tshaj yog rau qis - qhov kev pabcuam kub, qhia cov kev xav tau ntxiv xws liS1 (Charpy V-Ntch Impact Test)hauv koj daim ntawv xaj khoom.
Deg mob thiab txheej txheej: Cov kav dej feem ntau yog muab tso rau liab qab ("dub") tab sis tuaj yeem txiav txim nrog ntau yam txheej sab nraud (xws li FBE, 3LPE) lossis galvanized (rau cov kab me me) rau kev tiv thaiv corrosion.
Dimensional Standards: Thaum ASTM A53 muab qhov loj me, rau qhov loj - txoj kab uas hla dej ua haujlwm,AWM C200nquag siv, uas feem ntau hu rau ASTM A53 Qib B ua cov khoom siv hauv paus.
Ua kom tiav Specification: Thaum xaj, qhia meej:
ASTM A53 Qib B, SSAW (spiral welded), Loj (OD x WT), Ntev, Xaus Xaus
Cov txheej txheem txheej: [piv txwv li, liab qab, galvanized, 3LPE]
Ib qho kev xav tau ntxiv (piv txwv li, S1 rau kev kuaj qhov cuam tshuam)
📝 Cov ntsiab lus
ASTM A53 Qib B Kauv Submerged Arc Welded kavyog covtxheem, feem ntau, thiab dav muaj kev xaivrau loj - txoj kab uas hla, dav - lub hom phiaj piping applications . Nrog qhov tsawg kawg nkaus tawm lub zog ntawm35,000 psi (241 MPa), Qib B yog cov khoom siv "workhorse" uas muaj qhov sib npaug zoo ntawm lub zog, weldability, thiab tus nqi, ua rau nws tsim nyog rau ntau yam kev siv, suav nrog qis - mus rau - nruab nrab cov kua dej sib kis, kev txhawb nqa, piling, thiab cov kav dej siv dav dav.
Muaj nyob rau hauv diameters los ntawm219mm txog 4000mmnrog phab ntsa thicknesses rau50 hlithiab ntev mus txog50m, cov kav dej no yog tsim los siv cov khoom siv tau zoo thiab tus nqi - cov txheej txheem SSAW tsim tau zoo, nrog 100% NDT ntawm vuam seam thiab nruj hydrostatic xeem kom ntseeg tau tias kev ua tau zoo.
Rau qhov tseem ceeb, siab -siab hydrocarbon kis kab, cov qauv zoo liAPI 5Lfeem ntau tau teev tseg. Txawm li cas los xij, rau feem ntau ntawm cov kev pabcuam dav dav, cov qauv tsim, thiab cov dej xa tawm, ASTM A53 Qib B SSAW yeeb nkab yog qhov kev nyiam, txhim khu kev qha, thiab kev daws teeb meem.
Thaum txiav txim, xyuas kom meej tias koj qhia meej cov qauv ua tiav nrog qib, txheej txheem tsim khoom (SSAW), qhov yuav tsum tau muaj, thiab cov txheej txheem lossis cov kev xav tau ntxiv raws li koj daim ntawv thov tshwj xeeb.
