P355NH Steel Welded Yeeb Nkab
P355NH steel welded yeeb nkabyog ib qho zoo, weldable fine-grain siab raj rau EN 10217-3 (khoom siv 1.0565) nrog 355 MPa yam tsawg kawg nkaus tawm los thiab 490-630 MPa tensile range. Nws lub ntsiab lus txhais tau tias - "H" - yog tabulated elevated - kub pov thawj lub zog ntawm 100℃mus rau 400℃(304 MPa mus rau 167 MPa ntawm qhov tawm los), yog li ib qib spans ambient kev pab cuam thiab cov khoom siv cua sov. Qhia nws nrog 100% weld-seam NDE thiab Charpy cuam tshuam ntawm −20℃.
Rolled, welded steel kav raws li DIN EN 10217-3, nyob rau hauv lub version nrog normalized weld seam (NW), kiag li normalized (NP) los yog normalizing dov los yog kub stretch txo (NR), nyob rau hauv round dimension.
Tsab ntawv loj P sawv cev rau kev ntxhov siab, NH qhia txog cov khoom tsim nyog rau qhov kub thiab txias. Cov kav dej raws li tus qauv no feem ntau yog hluav taws xob lossis submerged arc welded. Cov ntawv thov rau cov khoom siv no yog compressive stresses ntawm qhov kub thiab txias uas yuav tsum tau nruab nrab, xws li hauv cov hlab ntsha siab los yog boilers. Cov khoom siv vuam zoo ua rau nws tuaj yeem siv tau hauv kev tsim kho welded.
Cov yeeb nkab yog tsim los ntawm kub- dov zoo- nplej sawb nrog kev tswj cov pa roj carbon -manganese chemistry ntxiv rau micro-alloy grain refiners (Nb, V, Ti, Al), muab cov weldability zoo yam tsis muaj kev tshaj tawm niaj hnub-weld kho cua sov ntawm cov phab ntsa nyias. Nws yog qib workhorse siab thaum tus tsim cov ntaub ntawv tso cai rau kev ntxhov siab tshaj qhov kub thiab txias.
Peb muab P355NH welded yeeb nkab nyob rau hauv sab nraud diameters ntawm 21.3 hli mus rau 610 hli (½ "–24"), phab ntsa thicknesses 2.0-40.0 hli, thiab ntev mus txog 24 m, nrog dawb, beveled los yog threaded kawg thiab EN 10204 3.1 los yog 3.2 daim ntawv pov thawj; thib peb-kev tshuaj ntsuam xyuas (SGS, BV, TÜV) muaj.
Technical Specifications
| Parameter | Muaj peev xwm |
|---|---|
| Txuj | EN 10217-3: 2019 (welded nplua-grain siab raj); Seamless counterpart EN 10216-3: 2014 |
| Qib / khoom siv no. | P355NH / 1.0565 |
| Sab nraud txoj kab uas hla | 21.3-610 hli (½"-24"); loj diameters ntawm SAW thov |
| Phab ntsa thickness | 2.0-40.0 hli (0.079 "-1.575") |
| Ntev | mus txog 24 m; random los yog tsau txiav lengths |
| Weld txoj kev | ERW/HFW longitudinal; SAW rau txoj kab uas hla loj |
| Kev xa khoom | Normalized - NP (tag nrho normalized), NW (normalized weld), los yog NR (normalizing dov) |
| Xaus | Plain, beveled, los yog threaded |
| Qeb xeem | TC1 (tus qauv) lossis TC2 (nrog yuav tsum tau weld-seam UT) |
| Nto / txheej | Liab qab, kua roj vanish, primer, galvanized, FBE lossis 3LPE ntawm kev thov |
| Daim ntawv pov thawj | EN 10204 3.1 lossis 3.2; thib peb-kev soj ntsuam tog (SGS, BV, TÜV) muaj |
Tshuaj muaj pes tsawg leeg
| Element | P355 NH | Nco tseg |
|---|---|---|
| Cov pa roj carbon (C) | 0.20 | Welded{0}}tube txwv rau EN 10217-3 (phaj EN 10028-3 yog 0.18) |
| Silicon (Si) | 0.50 | Deoxidation |
| Manganese (Mn) | 0.90–1.65 | +0.05% Mn tso cai rau 0.01% C hauv qab max, mus txog 1.70% |
| Phosphorus (P) | 0.025 | Khaws qis rau toughness |
| Sulfur (S) | 0.020 | Tsawg S pab weldability thiab toughness |
| Aluminium tag nrho (Al) | 0.020 min | grain refinement |
| Niobium (Nb) | 0.05 | Micro-Alloy grain refiners; Nb + Ti + V Tsawg dua lossis sib npaug li 0.12 |
| Vanadium (V) | 0.10 | |
| Titanium (Ti) | 0.04 | |
| Chromium (Cr) | 0.30 | Residual / yeem alloying |
| Nickel (Ni) | 0.50 | |
| Molybdenum (hli) | 0.08 | |
| Copper (Cu) | 0.30 | |
| Nitrogen (N) | 0.020 |
Txhua qhov kev tswj hwm tswj hwm qhov kev pheej hmoo tshwj xeeb: qis C thiab qis S tiv thaiv weldability, Al / Nb / V / Ti xauv hauv cov nplej zoo rau cov tawv tawv, thiab nruj P / S txwv tiv thaiv kev puas tsuaj. Txoj cai C-Mn kev lag luam- tawm txoj cai cia mills nplua - kho lub zog nyob rau hauv cov qhab nia.
Mechanical Properties (chaw kub, normalized)
| Phab ntsa thickness (mm) | Tawm tswv yim Rp0.2 min (MPa) | Tensile Rm (MPa) | Elongation A min (%) |
|---|---|---|---|
| Tsawg dua los yog sib npaug li 16 | 355 | 490–630 | 22 |
| > 16 – 40 | 345 | 490–630 | 22 |
| > 40 – 63 | 335 | 490–630 | 22 |
| > 63 – 100 | 315 | 470–610 | 21 |
| > 100 – 120 | 305 | 460–600 | 21 |
| > 120 – 150 | 295 | 450–590 | 21 |
Charpy V-qhov cuam tshuam:40 J longitudinal / 27 J transverse ntawm -20 degree. Nco ntsoov lub tensile ntau yog490-630 MPa- qee cov ntaub ntawv xa khoom xa tawm 650 MPa rau cov phab ntsa nyias nyias, tab sis 490-630 MPa yog cov txheej txheem teev tseg. Elongation yog ntsuas ntawm tus qauv proportional specimen.
Ua kom siab -Tsub Pov Thawj Zog - qhov "H" qhov tseem ceeb
| 100 degree | 150 degree | 200 degree | 250 degree | 300 degree | 350 degree | 400 degree |
|---|---|---|---|---|---|---|
| 304 | 284 | 255 | 235 | 216 | 196 | 167 |
Cov nqi no yog qhov txawv P355NH los ntawm P355N. Ib qho kev tsim qauv hais txog 300℃yuav tsum siv 216 MPa, tsis yog ambient 355 MPa - siv chav tsev - tus lej ntawm qhov kub thiab txias overstates tso cai rau kev ntxhov siab li ntawm 64%. Lub rooj nres ntawm 400 degree; saum toj no, qhia P355GH lossis lwm qhov nce siab - qib kub.
P355N / NH / NL1 / NL2 - xaiv qhov ntsuas kub zoo
| Qib | Tsab ntawv lub ntsiab lus | Kev cuam tshuam (min) | Txhim kho- tus nqi tsim qauv? | Kev pabcuam |
|---|---|---|---|---|
| P355N | Normalized, ambient | -20℃tsim nyog (ambient tsim) | Tsis muaj | Ambient - kub siab |
| P355 NH | Normalized, siab temp | -20℃(40 JL / 27 JT) | Yog - 100–400 degree | Li qub + nce siab rau ~ 400 degree |
| P355NL1 | Normalized, qis temp 1 | -40 degree | Tsis muaj | Tsawg-tej dej kub |
| P355 NL 2 | Normalized, qis temp 2 | -50 degree | Tsis muaj | Cryogenic / offshore |
Xaiv los ntawm qhov qis tshaj thiab siab tshaj qhov ntsuas qhov yuav pom. P355NH tsuas yog ib qho ntawm plaub uas tseem muaj siab - kub tsim lub zog; NL qib kev lag luam tawm mus rau qhov tob dua -kub toughness.
Qhov zoo
Tus nqi lag luam ntawm P355NH los ntawm cov khoom ntsuas, tsis yog cov npe.
Cov phab ntsa nyias dua li cov qib qis.A 355 MPa yield (vs 235–265 MPa qib) cia tib lub siab ntsuas tau ntsib nrog tsawg phab ntsa, txiav qhov hnyav thiab tus nqi txhawb nqa.
Weldable yam tsis tu ncua PWHT.Fine-grain normalized chemistry (CEV max ~ 0.43) ua kom preheat me me ntawm cov ntu nyias, ua kom luv luv cov sij hawm tsim khoom.
-20℃toughness ua nyob rau hauv.Ib qho lav 40 J longitudinal / 27 J transverse ntawm −20℃npog cov huab cua txias me ntsis yam tsis tau nqis mus rau qhov siab qis - qib kub.
ambient mus txog ~ 400 degree.Vim tias qhov siab - kub tsim lub rooj yog ib feem ntawm qib, ib qho khoom siv npog cov khoom siv cua sov uas ib chav - kub tsis tau.
Tus nqi -zoo piv rau seamless.ERW / HFW welded P355NH nrog tag nrho weld NDE raws li feem ntau nyob ruaj ruaj tsim qauv ntawm tus nqi qis dua seamless EN 10216-3 raj.
Daim ntawv thov
P355NH raug xaiv nyob qhov twg los xij cov xov xwm uas tau tuav ntawm qhov kub siab tshaj ambient tab sis qis dua 400 degree, thiab qhov twg zoo weldability thiab −20℃toughness kuj yuav tsum tau.
Cov hlab ntsha siab thiab ruaj khov spheres
Petrochemical thiab roj- tuav fabricators siv P355NH rau reactors, separators thiab siab - cia siab nyob qhov twg lub phab ntsa yuav tsum tuav lub zog nyob rau hauv sustained kub.
Boilers, steam headers thiab heat exchangers
Hauv kev tsim hluav taws xob thiab cov txheej txheem cov nroj tsuag, P355NH nqa cov dej thiab cov txheej txheem kub; nws elevated -kub Rp0.2 qhov tseem ceeb pub rau tus qauv tsim qauv tso cai rau- cov rooj ntxhov siab ncaj qha.
Industrial siab piping
Txheej txheem- cog piping, compressed- cua tshuab, HVAC thiab koog tsev kawm ntawv - cov kab cua sov siv P355NH welded yeeb nkab uas nruab nrab siab thiab kub coexist nrog fabrication los ntawm vuam.
Siab -siab gas kis thiab faib
Longitudinal ERW / HFW P355NH yeeb nkab ua haujlwm rau cov kav dej ntawm ntug dej thiab cov kav dej cog; 100% weld-seam NDE ua rau cov seam longitudinal tswj, tshuaj xyuas yam tsis yog kev lav phib xaub.
Kev tiv thaiv hluav taws thiab cov neeg ua haujlwm siab
Sprinkler mains thiab siab -lub zog siab- muaj cov qauv tsim tau txais txiaj ntsig los ntawm kev sib xyaw ntawm 355 MPa yield thiab nplua - nplej toughness ntawm tus nqi nruab nrab.
Kev Tswj Xyuas Zoo thiab Kev Xeem
Chemistry.Ladle tsom xam ntxiv rau kev tshuaj xyuas cov khoom lag luam tawm tsam EN 10217-3 txwv, nrog rau C-Mn kev lag luam tawm siv qhov cuam tshuam.
Neeg kho tshuab.Chav-kub tensile thiab transverse/longitudinal Charpy ntawm −20℃txheeb xyuas cov txiaj ntsig, tensile thiab toughness.
Weld kev ncaj ncees.100% weld-seam ultrasonic (EN ISO 10893-10, feem ntau Φ3.2 hli FBH rhiab heev) lossis kuaj hluav taws xob; hydrostatic test lossis pom zoo NDE lwm txoj kev.
Ductility hla lub weld.Kev ntsuam xyuas flattening lossis khoov kom paub meej tias qhov chaw vuam deforms nrog lub hauv paus hlau.
Dimensional & Visual.Txheeb xyuas raws EN 10246; cim thiab traceability rau lub tshav kub thiab daim ntawv pov thawj.
Xaiv thib peb - tog.SGS, BV lossis TÜV cov pov thawj thiab EN 10204 3.2 qhov teeb meem rau cov haujlwm tseem ceeb lossis tswj hwm.
Hais txog GNEE
GNEE tshwj xeeb hauv kev tsim cov API 5L welded kab kav thiab muaj ntau xyoo ntawm kev tsim API 5L carbon steel welded kav. Peb muab cov khoom zoo, tus nqi qis tab sis qhov kev pabcuam zoo tshaj plaws. Yog li ntawd, peb cov neeg siv khoom xa tawm tam sim no ntawm API 5L series welded longitudinal submerged arc welded kav npog Kuwait, Saudi Arabia, Oman, United Arab Emirates, Singapore, Malaysia, Indonesia, Kaus Lim Qab Teb, Chile, Peru, Australia, Nigeria, Angola thiab lwm lub tebchaws thiab cheeb tsam. Yog tias koj xav tau koj tuaj yeem tiv tauj peb txhua lub sijhawm, peb yuav muab cov khoom koj xav tau sai li sai tau.
- Full specification tswj.TC1 los yog TC2, normalized condition, ends and coating are all configurable per order, with EN 10204 3.1/3.2 and third- tog soj ntsuam.
- Kev pab txhawb nqa.Peb pab neeg lees paub qib, chav kawm kub thiab qib tshuaj xyuas tiv thaiv koj tus qauv tsim qauv ua ntej xa zaub mov, thiab xa rov qab cov lus hais nrog lub sijhawm ua haujlwm hauv 24 teev.
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Xa koj tus qauv thiab qib (EN 10217-3 P355NH), qhov ntev, qeb xeem, thiab qhov chaw nres nkoj qhov chaw - peb pab neeg ua haujlwm yuav lees paub qhov tshwj xeeb thiab xa rov qab cov lus hais nrog lub sijhawm ua haujlwm hauv 24 teev.
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FAQ
P355NH txhais li cas?
P=steel rau lub hom phiaj siab; 355=355 MPa yam tsawg kawg nkaus yield zog; N=normalized (kev xa khoom); H=haum rau siab / siab- qhov kub thiab txias. Tus "H" yog tsab ntawv txhais: P355NH nqa cov ntaub ntawv pov thawj lub zog ntawm 100-400℃uas qhov ambient - kub qib P355N tsis.
Qhov txawv ntawm P355N thiab P355NH yog dab tsi?
Ob leeg yog cov zoo li qub - cov nplej hlau nrog 355 MPa yield thiab −20℃cuam tshuam. P355NH tseem muab cov qib siab tshaj - qhov ntsuas kub tsim (Rp0.2 los ntawm 304 MPa ntawm 100℃mus rau 167 MPa ntawm 400 degree), yog li nws yog qib kom qhia meej thaum tus qauv tsim cov ntaub ntawv tso cai rau kev ntxhov siab saum toj ib puag ncig. P355N yog ambient- kub tsim qib tsis muaj qhov siab - kub lub rooj.
Qhov kub npaum li cas tuaj yeem P355NH welded yeeb nkab kov?
P355NH tsim nyog rau kev pab cuam los ntawm −20℃(Charpy 40 J longitudinal / 27 J transverse) mus txog roughly 400℃, qhov twg tus txheej txheem elevated -temperature proof- lub rooj siv zog. Saum toj no ~ 400 degree, qhia P355GH lossis lwm qib siab-kub kub; Hauv qab −20 degree, txav mus rau P355NL1 (−40 degree) lossis P355NL2 (−50 degree).
Puas yog P355NH zoo ib yam li S355J2?
No. S355J2 belongs rau EN 10025 (cov qauv hlau) thiab tsis yog qib siab - raj qib. Rau cov ntawv thov siab uas xav tau S355J2 lub zog thiab tawv, cov txheej txheem raug EN 10217-3 qib yog P355NH. Qee lub raj muaj ob daim ntawv pov thawj los kuj ua tau raws li EN 10219 S355J2H rau kev siv cov qauv, tab sis lub siab specification yuav tsum nyeem P355NH.
Dab tsi yog qhov tawm los thiab tensile zog ntawm P355NH?
Yam tsawg kawg nkaus yield zog (Rp0.2) yog 355 MPa rau phab ntsa thickness mus txog 16 hli, nqis mus rau 295 MPa ntawm 120-150 mm. Tensile zog (Rm) yog 490-630 MPa rau ntu txog 63 hli. Lub zog cuam tshuam yog 40 J longitudinal / 27 J transverse ntawm −20 degree.
P355NH welded yeeb nkab puas hloov seamless yeeb nkab?
Rau feem ntau cov kev pabcuam siab nyob ruaj khov uas qhov ntev ERW / HFW vuam nrog 100% weld-seam NDE (UT lossis RT) ua tau raws li tus qauv tsim, yog - P355NH welded yeeb nkab yog tus nqi-tuaj yeem ua rau seamless. Seamless (EN 10216-3) tseem nyiam rau lub luag haujlwm hnyav heev / qaug zog lossis qhov kev qhia tshwj xeeb txwv tsis pub lub vuam ntev.
Kev kuaj thiab kev soj ntsuam vuam dab tsi yog qhov yuav tsum tau ua rau EN 10217-3 P355NH?
Tshuaj ntsuam xyuas, chav-kub tensile, Charpy V-notch ntawm −20 degree, 100% weld-seam NDT (ultrasonic per EN ISO 10893-10 lossis radiographic), hydrostatic test lossis pom zoo NDE lwm txoj, flattening / khoov, thiab dimensional/visual inspection 2. kev soj ntsuam ntawm weld seam; TC1 tsis.
Dab tsi yog ASTM lossis US sib npaug ntawm P355NH?
Qhov ze tshaj plaws hauv Teb Chaws Asmeskas kev xaiv yog ASTM A662 Qib C. Qee cov raj kuj tseem muaj dual - tau lees paub rau EN 10219 S355J2H rau kev siv cov qauv. Rau kev yuav khoom, ib txwm hais EN 10217-3 P355NH qib thiab qib xeem es tsis yog tso siab rau "sib npaug" ib leeg, vim tias cov kev cuam tshuam thiab kev tshuaj xyuas txawv raws li tus qauv.
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