EN S275JR Ob chav -Sided Submerged Arc Vuam (DSAW) Hlau Yeeb Nkab
✅ Cov ntsiab lus tseem ceeb
EN S275JR DSAW (Ob chav-Sided Submerged Arc Vuam) steel yeeb nkabyog cov khoom lag luam tus qauv rau loj - txoj kab uas hla cov qauv thiab engineering daim ntawv thov raws li European specifications . Qhov kev xaiv "S275JR" qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm275 MPa (40 ksi)thiab lav Charpy cuam tshuam toughness ntawm27 J ntawm chav tsev kub (+20 degree). DSAW yog ib qho kev sib koom siab siab - vuam txheej txheem uas siv ob sab hauv thiab sab nraud, feem ntau hauv cov txheej txheem sib cais, tsim ib qhoib leeg siab -zoo weld nugget .
Qhov kev sib xyaw ua ke no tau siv dav rau cov hauv paus hauv paus, kev tsim kho choj, lub tsev thav duab, thiab qis - cov kua xa hluav taws xob uas yuav tsum muaj lub zog nruab nrab thiab zoo weldability.
📋 Kev piav qhia lub npe
| Ib feem | Lub ntsiab lus |
|---|---|
| EN | European Norm (tus qauv) |
| S275 | Cov qauv steel qib nrog qhov tsawg kawg nkaus tawm lub zog ntawm 275 MPa |
| JR | Impact test xav tau:27 J ntawm chav tsev kub (+20 degree) |
| DSAW | Muab ob npaug rau-Sided Submerged Arc Vuam - ob qho tib si sab hauv thiab sab nraud yog siv; Lub vuam arc yog submerged hauv granular flux thaum vuam |
| Kuj Paub Raws li | LSAW (Longitudinal Submerged Arc Welded) - thaum lub vuam seam khiav longitudinally raws cov yeeb nkab |
🔧 Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Khoom Txheem | TS EN 10025-2- txhais cov tshuaj muaj pes tsawg leeg thiab txhua yam khoom ntawm steel phaj |
| Khoom Txheem | EN 10219-1/-2- txias- ua welded structural hollow seem |
| Qib Steel | S275 JR- yam tsawg kawg nkaus yield zog 275 MPa, 27J cuam tshuam ntawm +20 degree |
| Kev tsim khoom | DSAW (Ob chav -Sided Submerged Arc Vuam) / LSAW (Longitudinal Submerged Arc Vuam) |
| Txoj kev tsim | JCOE (progressive J-C-O forming) los yog UOE (U-ing, O-ing, Expanding) |
| Qhov Loj | 219mm txog 1829mm(8 "mus rau 72") OD - raug rau DSAW |
| Phab ntsa Thickness | 5mm txog 50mm (txog 60mm rau kev siv piling) |
| Ntev | 6 m txog 12.3 m txheem; mus txog 18.3 m muaj |
🔬 Chemical Composition (EN 10025-2 / EN 10219)
| Element | Ntau tshaj % | Sau ntawv |
|---|---|---|
| Cov pa roj carbon (C) | 0.20-0.22% | Tsawg carbon rau zoo weldability |
| Manganese (Mn) | 1.50% | Muab lub zog |
| Silicon (Si) | 0.35-0.50% | Deoxidizer |
| Phosphorus (P) | 0.035% | Tswj rau weldability |
| Sulfur (S) | 0.035% | Tswj kom toughness |
| Nitrogen (N) | 0.012% | Tswj tau; tag nrho tua steel yuav tsum tau |
* Ceebtoom: Cov hlau tua tag nrho (FF) uas muaj nitrogen- khi cov ntsiab lus (piv txwv li, min. 0.020% tag nrho Al) yog yuav tsum tau .*
📊 Mechanical Properties (EN 10219)
| Khoom | S275JR yuav tsum | Qhov xwm txheej |
|---|---|---|
| Yield zog (min) | 275 MPa rau | Thickness Tsawg dua los yog sib npaug li 16 hli |
| 265 MPa rau | 16mm | |
| Tensile zog (min) | 360-510 MPa | Thickness Ntau dua los yog sib npaug li 3 hli |
| 410-560 MPa | Thickness > 16 hli | |
| Elongation (min) | 20-24% | Nws txawv ntawm phab ntsa thickness |
| Charpy Impact (JR) | 27 J ntawm +20 degree | Guaranteed nyob rau hauv chav tsev kub |
📏 Dimensional Specifications
| Parameter | Ntau Yam / Tolerance |
|---|---|
| Sab nraud txoj kab uas hla | 219mm txog 1829mm(8 "mus rau 72") - DSAW ntau yam |
| Phab ntsa Thickness | 5mm txog 50mm (txog 60mm rau piling) |
| Txoj kab uas hla Tolerance | ± 0.75% ntawm OD (tseem ceeb) |
| Phab ntsa Thickness kam rau ua | +15% / -12.5% ntawm nominal (tus qauv) |
| Ntev | 6 m txog 12.3 m txheem; mus txog 18.3 m muaj |
Phab ntsa Thickness Muaj los ntawm Diameter:
| OD (inch) | OD (mm) | Phab ntsa Thickness Range (mm) |
|---|---|---|
| 16" | 406 | 6.0 - 14.0 |
| 20" | 508 | 6.0 - 16.0 |
| 24" | 610 | 6.0 - 18.0 |
| 30" | 762 | 7.0 - 21.0 |
| 36" | 914 | 8.0 - 24.0 |
| 40" | 1016 | 8.0 - 26.0 |
| 48" | 1219 | 9.0 - 28.0 |
| 56" | 1422 | 10.0 - 29.0 |
| 60" | 1524 | 10.0 - 29.0 |
| 64" | 1626 | 10.0 - 30.0 |
| 72" | 1829 | 10.0 - 30.0 |
Qhov chaw:
🔧 DSAW Manufacturing Process
Ob chav -Sided Submerged Arc Vuam yog ib qho kev ua haujlwm siab - siv feem ntau rau cov kav hlau loj - txoj kab uas hla:
Txheej txheem piav qhia
Vuam arc yog submerged hauv granular fluxThaum vuam, tiv thaiv cov vuam los ntawm atmospheric paug
Ob sab hauv thiab sab nraud welds yuav tsum tau, feem ntau ua tiav hauv cov txheej txheem sib cais
Cov sib cais welds noj ib feem ntawm lwm yam, ua rau aib leeg siab -zoo weld nugget
Txoj kev tsim
| Txoj kev | Kev piav qhia | Hom kab |
|---|---|---|
| JCOE | Progressive J-C-O cov kauj ruam (J-shape → C-shape → O-shape), nthuav dav tom qab vuam | 406-1626 hli (16 "-64") |
| UAE | Phaj nias rau hauv U-puab, ces O-puab, nthuav dav tom qab vuam | 508-1118 hli (20 "-44") |
Txheej txheem txheej txheem
Phaj xaiv- Siab- cov ntawv hlau zoo xaiv raws li EN 10219 cov cai
Ntug Kev Npaj- Ntug ntawm cov hlau phaj yog beveled los tsim V-zoo li zawj
tsim- Cov ntawv hlau yog tsim rau hauv cov duab cylindrical siv xovxwm lossis yob dabtsi yog khoov tshuab (JCOE lossis UOE)
Tack Vuam- Cov phaj tsim yog tack-welded los tuav cov duab
Ob chav Submerged Arc Vuam- Cov yeeb nkab seam welded rau ob sab hauv thiab sab nrauv
Txias Expansion- Cov yeeb nkab yuav raug nthuav mus txog 1.5% kom ua tiav qhov kawg ntawm OD; Cov txheej txheem no tuaj yeem ua kom muaj zog tawm los
Ultrasonic soj ntsuam- Seam tshuaj xyuas los ntawm kev txuas ntxiv ultrasonic tsis siv neeg qhov tsis pom kev
Hydrostatic Pressure Test-Txhua cov yeeb nkab tau raug kuaj xyuas hydrostatic siab
Ua tiav- Xaus kev, beveling, txheej, thiab kos npe raws li specifications
🧪 Test & Inspection Requirements
| Hom kev xeem | Kev xav tau | Sau ntawv |
|---|---|---|
| Tshuaj ntsuam xyuas | Rau qhov kub ntau | Txheeb xyuas qhov txwv tsis pub muaj |
| Tensile Test | Rau ntau | Txheeb xyuas qhov tawm los thiab lub zog tensile |
| Flattening Test | Yuav tsum tau | Txheeb xyuas qhov ductility thiab weld kev ncaj ncees |
| Khoov Test | Yuav tsum tau | Verifies weld kev ncaj ncees |
| Charpy Impact Test | Yuav tsum tau rau JR | 27 J ntawm +20 degree |
| Hydrostatic Test | Txhua lub raj | Kev ntsuas siab ncaj ncees |
| Ultrasonic soj ntsuam | 100% ntawm weld seam | Nruam tsis siv neeg qhov tsis pom kev |
| X-Ray Inspection | Thaum tau teev tseg | Rau cov kev siv tseem ceeb |
| Dimensional soj ntsuam | 100% | Raws li EN 10219 tolerances |
| Mill Test Certificate | EN 10204 Hom 3.1B | Muab tag nrho cov kev xeem |
🏭 Common Applications
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Piling Foundations | Thauj khoom-cov kabmob rau cov tsev thiab cov qauv |
| Structure Engineering | Lub tsev thav duab, kab, trusses rau industrial nroj tsuag, chaw ntau pob |
| Kev tsim kho choj | Cov tswv cuab, kev txhawb nqa, cov neeg taug kev txuas hniav |
| Infrastructure Projects | Qhov kev txhawb nqa, khaws cov phab ntsa, cov qauv kev loj |
| Tsawg-Hloov Fluid Transmission | Dej, roj, thiab roj kav dej (tsis yog- tseem ceeb) |
| Offshore Projects | Marine structures, chaw nres nkoj |
| Kev siv tshuab | Machinery thiab khoom thav duab |
📊 S275 Qib Suffixes: Impact Properties
| Lub npe | Impact Test Temperature | Yam tsawg kawg nkaus zog | Daim ntawv thov |
|---|---|---|---|
| S275 JR | +20 degree(chaw kub) | 27 J | Kev siv sab hauv tsev lossis sov huab cua, kev siv cov qauv siv dav dav |
| S275J0 | 0 degree | 27 J | Temperate kev nyab xeeb sab nraum zoov qauv |
| S275J2 | -20 degree | 27 J | Cov huab cua txias, thov thov |
* Ceeb toom: Rau DSAW yeeb nkab raws li EN 10219, qhov raug xaiv rau hollow seem yogS275J0H(0 degree) los yogS275J2H(-20 degree). Cov lus "H" qhia tias Hollow Section .*
🏗️ European Standards Framework (EN vs. ASTM)
Lub tswvyim tseem ceeb sib txawv muaj nyob ntawm European (EN) thiab American (ASTM) cov qauv:
| Yam | European System (EN) | American System (ASTM) |
|---|---|---|
| Kev xav | Modular- Cov qauv khoom yog cais los ntawm cov qauv khoom | Kev koom ua ke- Feem ntau cov qauv ASTM cov yeeb nkab sib txuas cov khoom thiab cov khoom yuav tsum tau ua |
| Khoom Txheem | TS EN 10025 Cov khoom siv hlau phaj | Tsis pub dhau tus qauv khoom (piv txwv li, A53) |
| Khoom Txheem | TS EN 10219 Cov yeeb nkab geometry, kam rau ua, vuam zoo) | Nyob rau hauv tib tus qauv |
| Lub npe | Raws li cov khoom muaj zog thiab toughness (piv txwv li, S275JR) | Raws li qib ntawv lossis lub zog tensile |
Yog li, ua tiav cov lus qhia rau EN S275JR DSAW yeeb nkab yuav tsum:
Khoom TxheemTS EN 10025-2 - S275JR (rau cov hlau phaj)
Khoom TxheemTS EN 10219-1 /-2 (rau cov seem hollow tiav)
🛡️ Txheej Options
S275JR DSAW yeeb nkab tuaj yeem muab nrog ntau txheej txheej rau kev tiv thaiv corrosion:
| Txheej hom | Zoo tshaj rau | Ntsiab nta |
|---|---|---|
| 3LPE (3-txheej polyethylene) | Cov kav dej faus | Feem ntau; zoo heev tiv thaiv corrosion, siab cuam tshuam kuj |
| FBE (Fusion Bonded Epoxy) | Roj & roj pipelines | Muaj zog adhesion, tshuaj tiv thaiv |
| Coal Tar Epoxy | Marine ib puag ncig | Heavy-lub luag haujlwm tiv thaiv |
| Varnish / Anti- xeb roj | Kev tiv thaiv ib ntus | Luv -lub sij hawm tiv thaiv corrosion thaum thauj |
| Bitumen txheej | Kev pabcuam faus | Tus nqi -kev tiv thaiv zoo |
| Dub Roj Txheej | Standard zeb tiav | Kev tiv thaiv ib ntus |
📝 End Finishes
Muaj cov kev kho mob kawg suav nrog:
Plain xaus (PE)- txheem rau ntau daim ntawv thov
Beveled xaus (BE)- rau qhov chaw vuam (30℃bevel kaum sab xis)
Xov xaus- rau kev sib txuas tshuab
🌍 International Equivalents
| Txuj | Qib sib npaug | Sau ntawv |
|---|---|---|
| ASTM | A36 (zoo ib yam) | 250 MPa tawm los vs . 275 MPa |
| DIN | Nqe 44-2 / St44-3 | Keeb kwm German sib npaug |
| BS | Qib 43 | Keeb kwm British standard |
| GB / T | Q275 | Suav sib npaug |
| JIS | TSI 400 | Japanese txuj |
✅ Qhov zoo tshaj plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Zoo zog | 275 MPa tawm los - kwv yees li 17% siab dua S235 |
| Weldability zoo heev | Cov ntsiab lus tsis tshua muaj cov pa roj carbon monoxide ua kom muaj kev sib tw zoo |
| Guaranteed Toughness | 27 J ntawm +20℃kom ntseeg tau tias kev ua tau zoo ntawm chav tsev kub |
| Loj Loj Muaj peev xwm | DSAW tsim cov kav dej ntawm 8 "mus rau 72" OD - zoo tagnrho rau cov ntawv loj - txoj kab uas hla |
| High Weld Integrity | Muab ob npaug rau- sab vuam tsim ib qho siab - zoo weld nugget nrog 100% UT tshuaj xyuas |
| Lub neej ua haujlwm ntev | Nrog rau kev tswj kom zoo corrosion, kev pabcuam lub neej tuaj yeem ncav cuag 80 txog 100 xyoo |
| Tus nqi -Cov | Kev xaiv kev lag luam rau nruab nrab - kev siv lub cev muaj zog |
| Daim ntawv pov thawj CE / UKCA | Muaj rau cov khoom tsim kho raws li EU / UK cov cai |
📝 Cov ntsiab lus tseem ceeb
1. Cov khoom tsim qauv xaiv
TS EN 10219- Cov qauv hollow seem (feem ntau rau DSAW)
TS EN 10217- Lub hom phiaj siab (thaum kuaj hydrostatic thiab ntsuas ntsuas siab)
2. Kev ntsuas qhov ntsuas kub
S275 JR- 27 J ntawm +20℃(chav kub) - haum rau kev siv huab cua hauv tsev lossis sov so
Rau 0℃cuam tshuam cov cai, qhia meejS275J0H
Rau -20℃cuam tshuam cov cai, qhia meejS275J2H
3. Kev txwv qhov loj
DSAW manufacturing rau S275JR feem ntau muaj los ntawm8" rau 72" OD
Cov kab me me (hauv qab 8 ") feem ntau yog tsim los ntawm ERW los yog seamless txoj kev
4. Txias-Formed vs. Kub-Tiav
EN 10219 tshwj xeeb npogtxias - tsimhollow seem (tsim los ntawm kev ua txias tsis muaj kev kho cua sov tom qab)
Kub-Tiav cov qauv hollow seem yog them los ntawmTS EN 10210
5. Weld Zoo
DSAW produces aib leeg siab -zoo weld nuggetlos ntawm kev sib xyaw ua ke ntawm sab hauv thiab sab nraud welds
100% ultrasonic soj ntsuam ntawm vuam seam yog tus qauv xyaum
6. Thib peb-Kev soj ntsuam tog
Muaj cov kev pabcuam tshuaj xyuas suav nrog SGS, BV, Lloyds, TUV
7. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1Bnrog tag nrho cov kev xeem
Thib peb-kev tshuaj ntsuam xyuas muaj nyob rau thaum thov
📝 Cov ntsiab lus
EN S275JR Ob chav -Sided Submerged Arc Welded (DSAW) steel yeeb nkabyog ib qho khoom lag luam rau cov khoom loj - txoj kab uas hla cov qauv thiab engineering daim ntawv thov raws li European qauv. Nrog yam tsawg kawg nkaus tawm lub zog ntawm275 MPa (40 ksi)- kwv yees li 17% siab dua S235 - thiab lav Charpy cuam tshuam toughness ntawm27 J ntawm chav tsev kub (+20 degree), cov khoom no muaj qhov sib npaug zoo ntawm lub zog, weldability, thiab tus nqi - ua tau zoo rau ntau yam kev siv .
Cov yam ntxwv tseem ceeb:
Khoom txheemTS EN 10025-2 S275JR
Cov khoom txheemTS EN 10219-1 /-2 (Tshooj hollow seem)
DSAW manufacturingtsim cov kav dej los ntawm8" rau 72" ODnrog phab ntsa thickness mus txog50 mm
Ob -sab vuamtsim ib lub siab -zoo weld nugget
JCOE los yog UOE tsimcov txheej txheem kom paub meej qhov tseeb qhov tseeb
100% ultrasonic kuajntawm weld seam kom zoo
"JR" suffixguarantees chav kub cuam tshuam toughness (27 J ntawm +20 degree)
Lub neej ua haujlwm ntev- mus txog 80-100 xyoo nrog kev tswj corrosion kom zoo
Cov ntawv thov uas muaj xws li:
Piling foundations thiab kev tsim choj
Structure engineering (tsev thav duab, kab, trusses)
Tsawg- kis tau tus mob (dej, roj, roj)
Infrastructure tej yaam num thiab offshore lug
Thaum ordering, qhia:EN 10219-1, Qib S275JRH (los yog S275J0H/S275J2H yog tias qhov ntsuas kub qis dua yuav tsum tau), DSAW (Ob-Sided Submerged Arc Welded), Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Coating Test 4EN Type10, thiab 2 3.1 . Rau tej yaam num tshiab,EN 10025 S275 JRnrogTS EN 10219yog cov khoom pom zoo thiab cov khoom lag luam kev sib xyaw ua ke.
