904L Stainless Hlau Welded Yeeb Nkab|ERW, EFW, SAW
Kev tsim khoom: Welded (ERW EFW SAW)
Qhov Loj: NPS 1/2 "-48" (common)
Teem sijhawm: 5S / 10S / 40S / 80S (ASME B36.19M)
Xaus: PE / BE (xov tooj raws li xaj)
Kev lees txais & cov ntaub ntawv: EN 10204 3.1 MTC + daim ntawv teev cov cua sov / ntau ntau; PMI/NDT/testing
Zhengzhou Huitong Pipeline Equipment Co., Ltd. yog ib qho ntawm cov ua lag luam thiab cov neeg muag khoom ntawm 904L Stainless Hlau Welded Pipes|ERW, EFW, SAW hauv Suav teb. Peb sov siab txais tos koj los yuav peb 904L Stainless Hlau Welded Pipes|ERW, EFW, SAW. Peb lub Hoobkas kuj lees txais cov kev txiav txim customized. Thov pub dawb kom txaus siab rau peb cov nqi sib tw thiab kev pabcuam zoo heev.
904L Stainless Hlau Welded Yeeb Nkab Nqe 2026|ERW EFW SAW Supplier & Cost Guide
904L stainless hlau welded yeeb nkab nqi feem ntau yog nyob ib ncig ntawm $ 8-15 / kg hauv 2026 nyob ntawm txoj kab uas hla, phab ntsa thickness, vuam txheej txheem, thiab daim ntawv pov thawj yuav tsum tau. UNS N08904 cov kav dej tau siv dav hauv cov nroj tsuag sulfuric acid, kev ua tshuaj lom neeg, dej hiav txwv, thiab kev siv sab nrauv vim tias lawv cov corrosion kuj zoo heev, cov ntsiab lus siab nickel, thiab molybdenum ntxiv.
904L Welded Yeeb Nkab Nqe Ntau Yam 2026
| Hom kev tsim khoom | Qhov Loj Loj (Outer Diameter) | Phab ntsa Thickness (Sch) | Tus nqi ntau (USD ib kg) | Nqe Ntau (USD ib Metric Ton) |
| ERW (Electric Resistance Welded) | 1/2 nti rau 8 nti | Sch10S rau Sch40S | $9.50 – $15.50 | $9,500 – $15,500 |
| EFW (Electric Fusion Welded) | 8 nti rau 24 nti | Sch40S rau Sch80S | $11.00 – $18.50 | $11,000 – $18,500 |
| SAW (Submerged Arc Welded) | 24 nti rau 72 nti | Kev cai / Hnyav phab ntsa | $14.00 – $22.00 | $14,000 – $22,000 |
Tus nqi rau 904L welded kav hloov pauv raws li lub ntiaj teb npib tsib xee thiab cov khoom siv raw surcharges, phab ntsa thickness, tsim txoj kev (ERW, EFW, SAW), thiab txiav txim ntim. Hauv qab no yog cov qauv kev lag luam tam sim no rau cov qauv kev lag luam.
904L Stainless hlau welded yeeb nkab yog dab tsi?
904L stainless hlau welded yeeb nkab (UNS N08904 / 1.4539) yog qhov siab -alloy austenitic stainless hlau yeeb nkab tsim los rau qhov chaw tsis zoo uas muaj sulfuric acid, chlorides, thiab dej hiav txwv. Piv nrog rau 316L stainless hlau, 904L muab kev tiv thaiv ntau dua rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg vim nws cov nickel siab, molybdenum, tooj liab, thiab chromium cov ntsiab lus. Nws yog dav siv nyob rau hauv kev ua tshuaj, offshore platforms, kev tswj cov pa phem, tshuaj, thiab cua kub exchanger systems.
904L welded kav yog tsim los ntawmERW, EFW, thiab SAW vuam txheej txheem, nrog kev xaiv nyob ntawm cov yeeb nkab txoj kab uas hla, phab ntsa thickness, siab ntsuas, thiab qhov project yuav tsum tau.
Cov txheej txheem tsim khoom:
- ERW:Qhov zoo tshaj plaws rau cov kab me me thiab cov phab ntsa nyias nyias nrog kev ua haujlwm siab.
- EFW:Siv rau nruab nrab - mus rau - loj diameters nrog automated fusion vuam.
- SAW:Qhov tseem ceeb rau hnyav-lub luag haujlwm, loj- txoj kab uas hla ntawm cov kav dej.
904L welded kav feem ntau xaiv rau:
- Cov khoom siv tshuaj ua haujlwm
- Cov nroj tsuag sulfuric acid
- Offshore seawater piping
- Pharmaceutical systems
- Thaum tshav kub kub exchangers
- Roj & roj ua haujlwm units
Cov ntsiab lus tseem ceeb:
- Qib: UNS N08904 / EN 1.4539 / X1NiCrMoCu25-20-5
- Hom yeeb nkab: ERW, EFW, LSAW, SSAW welded yeeb nkab
- Lub ntsiab Alloying Elements: Cr-Ni-Mo-Cu alloyed stainless hlau
- Corrosion Resistance: Superior rau 316L, ze rau qee cov nickel alloys
- Chloride Resistance: Zoo heev
- Sulfuric Acid Resistance: Zoo heev hauv diluted sulfuric acid
- Kev khiav hauj lwm kub: Kwv yees li -196℃txog 400℃(nyob ntawm qhov kev pabcuam)
- Cov Qauv Txheej Txheem: ASTM B673, ASTM A312, ASTM A358, EN 10217
Alloy 904l Chemical Composition
| Element | Kev sib xyaw (%) |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.020 |
| Silicon (Si) | Tsawg dua lossis sib npaug li 1.00 |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 2.00 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.045 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035 |
| Chromium (Cr) | 19.0-23.0 |
| Nickel (Ni) | 23.0-28.0 |
| Molybdenum (hli) | 4.0-5.0 |
| Copper (Cu) | 1.0-2.0 |
| Hlau (Fe) | Tshuav |
hlau 904l Mechanical Properties
| Tensile zog | 490 MPa ua |
| Lub zog muaj zog (0.2%) | 220 MPa |
| Elongation | 35% |
| Hardness | Tsawg dua lossis sib npaug li 90 HRB |
| Qhov ntom | 8.0 g / cm³ |
PREN Tus nqi
| Khoom siv | PREN |
| 304 | 18 |
| 316L | 25 |
| 904L | 36 |
| TIAB SA 2205 | 35 |
| Super Duplex 2507 | 42 |
| 254 SIB | 43 |
Formula: PREN=Cr + 3.3Mo + 16N; 904L muab kev tiv thaiv corrosion piv rau duplex stainless hlau.
Yuav ua li cas los sib piv tus nqi -kev ua tau zoo ntawm 904L welded kav vs. Nickel alloys (xws li Alloy 625 lossis C276) hauv seawater txias tshuab?
Nyob rau hauv ib puag ncig nrog dej txias thiab cov tshuaj chloride siab heev, PREN tus nqi ntawm 904L (kwv yees li 35) zoo tiv taus pitting thiab crevice corrosion. Piv rau cov npib tsib xee kim heev-raws li cov alloys (xws li Inconel 625 lossis Hastelloy C276), 904L welded yeeb nkab muaj cov nqi zoo heev -kev ua tau zoo vim nws cov nqi qis dua alloy.
AISI 904 l Sulfuric Acid Resistance
Ib qho zoo tshaj plaws ntawm 904L yog sulfuric acid kuj.
| Sulfuric Acid Concentration | Khoom siv pom zoo |
| <20% | 316L |
| 20-85% | 904L |
| >90% | Nickel alloy pom zoo |
Cov tooj liab ntxiv txhim kho kev tiv thaiv hauv kev txo cov acids.
Kev ua haujlwm kub
904L tuav cov khoom siv kho tshuab zoo hauv ntau qhov siab -kev siv kub.
| -196 degree | Haum rau kev siv cryogenic |
| 200-300 degree | Zoo heev |
| 400 degree | Feem ntau txais |
| >400 degree | Creep kuj txo |
Rau kev pabcuam txuas ntxiv saum toj 500 degree, Xav txog: Incoloy 800H; Inconel 625; Alloy 600
Vuam thiab Fabrication ntawm 904L yeeb nkab
ERW 904L Yeeb Nkab Manufacturing
ERW (Electric Resistance Welded) cov kav dej yog siv rau cov kab me me.
Cov kauj ruam ntawm kev tsim khoom:
- 904L stainless hlau sawb npaj
- Coil txoj kev
- High - zaus hluav taws xob vuam
- Weld hlaws tshem tawm
- Kev daws annealing
- Pickling thiab passivation
- Kev ntsuam xyuas hydrostatic
EFW 904L Pipe Chaw tsim tshuaj paus
EFW (Electric Fusion Vuam) yog dav siv rau txoj kab uas hla loj stainless / corrosion-cov ntaub ntawv tiv taus.
Txheej txheem:
- 904L phaj txiav
- Phaj dov
- TIG welding root pass
- Submerged arc vuam filling
- Kev kho cua sov
- NDT Inspection
SAW 904L Pipe Manufacturing
SAW (Submerged Arc Vuam) feem ntau yog siv rau txoj kab uas hla loj thiab cov kav dej hnyav.
Hom kev tsim khoom:
Plate → U forming → O forming → Internal SAW → External SAW
Vuam
Vuam 904L welded kav yuav tsum tau ceev faj tswj kom tsis txhob micro-fissuring thiab kub tawg. Vim tias muaj cov ntsiab lus ntawm cov alloy siab, cov cua kub qis dua (feem ntau khaws cia qis dua 1.5 kJ / mm) raug pom zoo. Filler metals sib piv cov niam txiv hlau (xws li AWS A5.9 ER904L) lossis siab -nickel lwm txoj kev yuav tsum tau siv los tswj kev sib haum xeeb ntawm cov hlaws vuam. Post-weld pickling thiab passivation yog qhov yuav tsum tau tshem tawm cov cua sov-tint oxides thiab rov ua kom cov chromium passive{11}} nplua nuj txheej.
ERW vs EFW vs SAW 904L Welded Pipe
| Vuam txheej txheem | Lub Npe | Txoj kev tsim khoom | Hom Loj Loj | Qhov zoo | Kev txwv |
| ERW | Electric Resistance Vuam | Cov yeeb nkab tsim los ntawm sawb thiab welded los ntawm hluav taws xob tsis kam | OD 6mm-610mm | Kev tsim khoom sai, kev lag luam, zoo qhov tseeb | Limited thickness thiab txoj kab uas hla |
| EFW | Electric Fusion Vuam | Phaj dov thiab welded siv TIG / PAW vuam | OD 200mm-3000mm | Zoo heev, tuab phab ntsa muaj peev xwm | Tus nqi siab dua |
| LSAW | Longitudinal Submerged Arc Vuam | Phaj tsim los ntawm JCO / UOE txheej txheem thiab SAW welded | OD 406mm-1524mm | Loj txoj kab uas hla, hnyav phab ntsa | Tus nqi tsim khoom siab dua |
| SSAW | Spiral Submerged Arc Vuam | Hlau coil kauv txoj kev thiab SAW vuam | OD 219mm-3500mm | Loj txoj kab uas hla kev lag luam daws | Tsawg qhov tseeb qhov tseeb |
ERW (Electric Resistance Vuam) txheej txheem yog tsim nyog thiab tus nqi -zoo rau cov kav me me - txoj kab uas hla ua los ntawm steel coils. Rau qhov loj - txoj kab uas hla los yog tuab- cov kav dej, cov txheej txheem EFW (Electric Fusion Vuam) thiab SAW (Submerged Arc Vuam) cov txheej txheem feem ntau nyiam.
904L vs 316L welded yeeb nkab
| Parameter | Qib 904L Welded yeeb nkab | Qib 316L Welded yeeb nkab |
| PREN Tus nqi (Pitting Resistance) | Ntau dua lossis sib npaug li 35 | 23−25 |
| Nqe Factor (Cov txheeb ze) | Siab ($ 10 - $ 20 / kg) | Nruab Nrab ($ 3.50 - $ 5.50 / kg) |
| Sulfuric Acid Resistance | Exceptional (mus txog rau siab concentrations / temps) | Poob rau nruab nrab |
| Chloride Stress Corrosion Cracking | Siab Resistant | Txaus siab rau qhov kub siab |
| Hom Lifespan hauv Seawater | 20+ xyoo nrog kev saib xyuas tsawg tsawg | 5-10 xyoo (kev pheej hmoo ntawm pitting) |
Kev txiav txim siab engineering
Xaiv 316L thaum:
- Chloride concentration yog nruab nrab
- Kub yog qhov tsawg
- Kev tswj tus nqi yog qhov tseem ceeb
Xaiv 904L thaum:
- Muaj sulfuric acid
- Kev raug dej hiav txwv tsis tu ncua
- Chloride concentration yog siab
- Cov khoom siv hloov pauv yog kim
Kev Paub Txog Engineering tiag tiag & teeb meem
Case 1: 316L Vs 904L Chemical Processing Failure Analysis
Kev ua tsis tiav ntxov hauv kev ua tshuaj lom neeg feem ntau tshwm sim thaum 316L yuam kev rau ambient sulfuric acid lossis cov kev pabcuam chloride stagnant. Nyob rau hauv ib qho kev tshawb fawb txog qhov chaw refinery tsis ntev los no, 316L welded heat exchanger kab raug kev txom nyem hauv zos pitting nyob rau hauv 8 lub hlis vim nyob rau hauv - deposit corrosion nyob rau hauv brackish txias dej. Txhim kho lub voj voog mus rau 904L tshem tawm kev tawm tsam hauv cheeb tsam, txuas ntxiv kev pab cuam lub neej dhau 15 xyoo.
Thaum qhov kev siv nyiaj thawj zaug rau 904L welded piping yog kwv yees li 3 mus rau 4 npaug siab dua 316L, kev txheeb xyuas tus nqi ntawm lub neej (LCA) ua pov thawj nws tus nqi hauv kev ua haujlwm hnyav.
Case 2: Welding Issues Thaum 904L Fabrication
Cov teeb meem tshwm sim:
1. Kub tawg
Ua rau: Tsis raug muab tub lim hlau; Tshaj tawm cua sov
Kev pom zoo: Siv cov khoom sib txuam ER385 ER904L, ENiCrMo-3 rau kev siv tshwj xeeb
2. Weld Corrosion
Ua rau: Pickling tsis zoo; Post tsis raug -welding tu
Kev daws: Acid pickling; Kev kho mob Passivation; Kev tshuaj xyuas PMI
Vim li cas 904L stainless hlau welded yeeb nkab siv hauv sulfuric acid thiab phosphoric acid ntau lawm?
904L (UNS N08904 / EN 1.4539) yog super-austenitic stainless hlau uas muaj 24-26% nickel, 19-23% chromium, thiab 4-5% tooj liab. Qhov sib ntxiv ntawm tooj liab imparts tshwj xeeb corrosion kuj tiv thaiv sulfuric acid nyob rau hauv tag nrho cov concentration ntau, thiab nws cov kev ua tau zoo nyob rau hauv txo cov kua qaub media-xws li phosphoric acid thiab acetic acid- deb tshaj li cov pa 316L los yog 330 series steels.
Sib piv 904L seamless vs 904L welded kav (ERW / EFW) rau cov nroj tsuag tshuaj
Hauv cov nroj tsuag tshuaj niaj hnub no, 904L welded kav (tshwj xeeb tshaj yog EFW) tau siv ntau dua vim tias lawv muab cov khoom zoo sib xws rau cov kav dej seamless ntawm tus nqi qis dua, thaum seamless 904L tseem yog qhov kev xaiv rau siab - siab thiab kev nyab xeeb- cov ntawv thov tseem ceeb.
| Yam khoom | 904L Seamless yeeb nkab | 904L Welded yeeb nkab (ERW / EFW) |
| Kev tsim khoom | Extrusion / tho + txias / kub dov | Phaj / sawb txoj kev + vuam |
| Weld seam | Tsis muaj weld seam | Longitudinal weld seam |
| Hom qauv | ASTM B677 / ASTM A312 TP904L, ASTM A312, ASTM B677 thiab ASTM A312 TP904L | ASTM B673, ASTM B674, ASTM A312 TP904L |
| Txoj kab uas hla | Me me mus rau qhov nruab nrab | Me me mus rau loj diameters |
| Phab ntsa Thickness | Zoo dua rau cov phab ntsa hnyav | Hloov tau, tshwj xeeb tshaj yog loj OD |
| Siab Resistance | Zoo heev | Zoo heev thaum tsim kom raug |
| Corrosion Resistance | Hnav khaub ncaws | Sib npaug tom qab vuam zoo thiab kev daws annealing |
| Mechanical Uniformity | Siab tshaj | Kev hloov me ntsis nyob ze thaj tsam weld |
| Nqi | Siab dua | Kev lag luam ntau dua |
| Lub Sijhawm Lead | Ntev ntev rau qhov loj me tshwj xeeb | Feem ntau luv dua |
| Loj Loj Muaj | txwv | Zoo heev |
| Qhov project Preference | Cov kav dej tseem ceeb | Txheej txheem kav dej thiab cov tshuab loj |
Qhov kev xaiv ntawm 904L seamless yeeb nkab thiab 904L welded yeeb nkab (ERW / EFW) yog nyob ntawm qhov ntsuas siab, txoj kab uas hla, corrosion tej yam kev mob, fabrication yuav tsum, muaj, thiab project nqi.
Cov qauv tsim nyog
- ASTM A312 General stainless hlau welded yeeb nkab
- ASTM A358 Hluav taws xob fusion welded yeeb nkab
- ASTM B673 Welded siab yeeb nkab
- ASTM B674 Welded tubing
- ASME SA312 Siab piping
- ASME SA358 EFW siab yeeb nkab
FAQ:
Q: Tam sim no 904l steel nqi ib kg hauv xyoo 2026 yog dab tsi?
A: Cov nqi feem ntau yog li ntawm $ 8.50 txog $ 20.00 ib kg, nyob ntawm cov txheej txheem tsim khoom (ERW vs EFW / SAW), phab ntsa tuab, thiab ntim ntim.
Q: Thaum twg koj yuav tsum xaiv 904L hloov 316L welded kav?
A: Siv 904L thaum tuav txo cov kua qaub (xws li sulfuric lossis phosphoric acid), siab -chloride concentrations ntawm qhov kub siab, lossis ib puag ncig uas 316L muaj kev nyuaj siab los yog kev nyuaj siab corrosion tawg.
Q: Tus qauv ASTM specifications rau 904L welded kav (ERW/EFW/SAW) yog dab tsi?
A: 904L welded kav feem ntau ua raws li ASTM B673 (Electric-Fusion-Welded/EFW yeeb), ASTM B674 (welded yeeb nkab), thiab ASTM B677 (seamless yeeb nkab) specifications. Rau qhov loj - txoj kab uas hla los yog tuab - cov kav dej ntsa, tsis siv neeg submerged arc vuam (SAW) lossis siab - zaus hluav taws xob tsis kam vuam (ERW) feem ntau ua haujlwm; Tom qab kev tsim khoom, cov kav dej yuav tsum tau ua kom muaj kev daws teeb meem nyuaj (1090℃-1150 degree) txhawm rau txo qhov kev ntxhov siab ntawm vuam.
Q: Puas yog 904L xav tau cov khoom siv vuam tshwj xeeb?
A: Yog. Vuam 904L yuav tsum tau muab cov hlau sib txuam (xws li ER904L) nrog kev tswj xyuas cov cua kub qis kom tiv thaiv kev sib tsoo thiab ua kom muaj kev sib txig sib luag hauv thaj tsam weld.
Q: Puas yog 904L welded kav hlau nplaum?
A: Tsis yog, 904L yog austenitic stainless hlau tag nrho thiab tseem tseem ceeb tsis yog-magnetic nyob rau hauv ob qho tib si annealed thiab welded tej yam kev mob.
Q: Dab tsi yog qhov kev lag luam tseem ceeb tsav tsheb thov rau 904L ERW / EFW kav?
A: Kev ua tshuaj lom neeg, kev tsim tshuaj, dej hiav txwv desalination, kev tswj kev ua qias tuaj (FGD scrubbers), thiab cov roj thiab roj hauv ntug dej hiav txwv yog thawj cov neeg siv khoom.
Q: Kuv puas yuav tsum xaiv 904L lossis 254 SMO?
A: Rau dej hiav txwv: 254 SMO muab cov tshuaj chloride ntau dua.
Rau sulfuric acid: 904L feem ntau pheej yig dua.
Q: Qhov kev pabcuam siab tshaj plaws ntawm 904L yeeb nkab yog dab tsi?
Feem ntau: Kwv yees li 400℃kev pabcuam txuas ntxiv.
Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.
HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom siv stainless / carbon / npib tsib xee alloy khoom xa khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muab cov kav dej, phaj, puag ncig, tab sis kuj yog cov yeeb nkab fittings, flanges, thiab lwm yam. Tiv tauj peb kom paub ntau ntxiv thiab cov nqi dawb.
✅ ISO 9001: 2015
✅ MTC 10204 3.1 3.2
✅ 100% PMI (Positive Material Identification)
✅ Ultrasonic Testing (Rau ASME VIII)
✅ Thib peb-Kev Tshawb Fawb (SGS/BV/DNV/LR)
✅ NACE MR0175 / ISO 15156
Author: Chloe Pu
5+ Xyoo ntawm Kev Tshaj Lij Tshaj Lij Tshaj Tawm hauv Stainless Hlau, Nickel Alloy & Carbon Steel Hlau Kev Lag Luam
Hloov tshiab kawg: Lub Yim Hli 4, 2026 (Lub Sijhawm Beijing)
Cim npe nrov: 904L Stainless Hlau Welded Yeeb Nkab|ERW, EFW, SAW, Suav teb, manufacturers, hoobkas, nqe, customized
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