904L Stainless Steel Lined Clad Pipe | UNS N08904 / 1.4539 High Alloy Cladding rau Sulfuric & Phosphoric Acid Service - Womic Steel

Kev Piav Qhia Luv:

904L lined bimetal metallurgical clad yeeb nkab - sab hauv CRA txheej 904L (UNS N08904 / 1.4539) metallurgically bonded rau carbon steel lossis qis alloy steel backing. Tsim los ntawm kub dov bonding + JCOE (welded) lossis los ntawm kub extrusion (seamless rau me me diameters). Tsim rau siab tiv taus sulfuric acid, phosphoric acid, formic acid, acetic acid, thiab chloride kev ntxhov siab corrosion cracking. Pickled, passivated, thiab tag nrho kuaj.

Xa email rau peb Cov Lus Qhia Txog Khoom

Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

Cov Khoom Siv Tseem Ceeb (Cov Hlau Tom Qab - ntau txoj kev xaiv):

●API 5L X52 / X60 / X65- cov yeeb nkab muaj zog rau roj & roj / kua qaub kis tau tus mob

●SA-106 Qib B- cov hlau carbon kub siab

●SA-210 Gr.C- qib boiler raj

●ASTM A333 Qib 6- cov hlau carbon uas tsis kub heev

●ASTM A335 P11 / P22- Cr-Mo alloy rau qhov kub siab (siv tsawg nrog 904L)

Cladding (CRA liner):904L (UNS N08904 / 1.4539) - cov hlau tsis xeb austenitic siab nrog 23-28% Ni, 19-23% Cr, 4-5% Mo, 1-2% Cu. PREN ≈ 34. Kev tiv taus zoo heev rau kev txo cov kua qaub (sulfuric, phosphoric, formic), kev tiv taus zoo rau chloride pitting, zoo dua li 316L hauv kev pabcuam kua qaub.

Qhov Loj Ntau:OD 60 – 1219 mm (cov yeeb nkab vuam - dov kub + JCOE). OD 25 – 168 mm (seamless extrusion). Lub plawv phab ntsa tuab 4 – 40 mm. Cladding tuab 2.0 – 4.0 mm (3.0 mm pom zoo rau kev pabcuam kua qaub). Ib qho ntev txog li 15 m (seamless) lossis 24 m (welded).

Txheej Txheem:Kev sib txuas ntawm cov hlau kub + kev tsim JCOE (welded) lossis kev rho tawm kub (seamless). Lub zog shear ntawm cov hlau sib txuas ≥200 MPa (welded) lossis ≥300 MPa (seamless). Kev tshuaj xyuas 100% UT bond, kev sim hydrostatic, kev sim tensile, kev ua kom tiaj tus, kev xaiv PMI thiab kev sim intergranular corrosion.

Cov Qauv:API 5LD (rau cov yeeb nkab clad line), ASME Seem VIII Div.1, EN 10216-5 (rau 904L seamless), ASTM A240 (904L phaj). NACE MR0175: 904L tsuas yog siv tau rau kev pabcuam qaub xwb nyob rau hauv cov xwm txheej tsawg heev (H₂S qis, chlorides qis, kub qis) - feem ntau tsis pom zoo.

Cov ntawv thov:Cov kav dej cog sulfuric acid, cov nroj tsuag chiv phosphoric acid, cov chaw ua liaj ua teb tshuaj lom neeg, cov tshuab txias dej hiav txwv (muaj chloride ntau), cov tshuab ntxuav flue gas desulfurization (FGD), kev hloov tshuaj lom neeg purity siab, kev pabcuam acetic / formic acid, kev ua tshuaj thiab kev ua zaub mov (purity siab).

Womic Steeltsim cov yeeb nkab uas muaj 904L uas muaj hlua khi rau cov kev siv kua qaub uas xav tau tshaj plaws. Peb muab qhov kev tiv thaiv xeb ntawm 904L nrog lub zog kho tshuab ntawm cov hlau carbon/alloy backing, txuag tau 40 60% piv rau cov yeeb nkab khov kho 904L. Qhov loj me raws li kev cai, kev tshuaj xyuas los ntawm lwm tus, EN 10204 Hom 3.2 muaj. Tiv tauj peb rau cov kev daws teeb meem yeeb nkab uas muaj hlau nplaum siab.

1. Vim li cas ho siv 904L Clad Pipe? Thaum 316L tsis txaus

904L (UNS N08904 / 1.4539) yog cov hlau tsis xeb austenitic siab uas tsim tshwj xeeb rau cov ntawv thov uas 316L tsis ua haujlwm vim tsis muaj zog acid lossis pitting txaus.

Cov yam sib txawv tseem ceeb piv rau 316L:

Vaj tse	316L	904L	Qhov zoo
Nickel (%)	10-14	23-28	Ni siab dua ua rau cov kua qaub tsis kam zoo dua
Molybdenum (%)	2-3	4-5	Mo siab dua ua rau cov qhov pitting zoo dua
Tooj liab (%)	—	1-2	Cu tseem ceeb rau kev tiv taus sulfuric acid
PREN	24-26	34	904L tiv taus pitting ntau dua
Kev tsis kam ntawm cov kua qaub sulfuric	Txom nyem qis dua 10% lossis siab dua 80%	Zoo heev 0-80% ntawm qhov kub nruab nrab	904L yog tus qauv rau H₂SO₄ kev pabcuam

Cov kua qaub ib txwm muaj uas 904L zoo tshaj plaws:

● Sulfuric acid (H₂SO₄) – 0-80% concentration, txog li 50 60°C

● Phosphoric acid (H₃PO₄) - txhua qhov concentration

● Cov kua qaub Formic (HCOOH) thiab cov kua qaub acetic (CH₃COOH)

● Cov kua qaub hydrochloric (HCl) uas yaj - txwv

● Cov kua qaub sib xyaw (piv txwv li, H₂SO₄ + chlorides)

Vim li cas thiaj hnav khaub ncaws?Cov yeeb nkab khov kho 904L kim heev (2 3 × tus nqi ntawm 316L, 5 6 × tus nqi ntawm cov hlau carbon). Los ntawm kev siv cov txheej sab hauv nyias (2 4 hli) 904L uas sib txuas nrog cov yeeb nkab sab nraud ntawm cov hlau carbon, koj ua tiav tib qho kev tiv thaiv xeb ntawm40 60% tus nqi khoom siv qis duaLub plawv hlau carbon muab lub zog kho tshuab ntawm ib feem ntawm tus nqi alloy.

Cov lag luam feem ntau:Kev tsim thiab thauj cov kua qaub sulfuric, cov nroj tsuag chiv phosphate, cov kab pickling hlau, cov tanker tshuaj lom neeg, cov dej hiav txwv cua sov sib pauv (chloride siab, kub nruab nrab).

2. Cov Khoom Siv - 904L Cladding & Backing Steel Options

2.1 904L Cladding Tshuaj Muaj pes tsawg leeg (% los ntawm pawg)

Khoom	UNS N08904 (904L)
Cov pa roj carbon (C)	≤0.020
Manganese (Mn)	≤2.00
Silicon (Si)	≤1.00
Phosphorus (P)	≤0.040
Sulfur (S)	≤0.030
Chromium (Cr)	19.0 – 23.0
Nickel (Ni)	23.0 – 28.0
Molybdenum (Mo)	4.0 – 5.0
Tooj liab (Cu)	1.0 – 2.0
Hlau (Fe)	Qhov Nyiaj Tshuav

Qhov ntxiv tooj liab yog qhov tseem ceeb rau kev tiv taus sulfuric acid. Yog tsis muaj Cu, 316L raug kev tawm tsam sai hauv H₂SO₄ sov so.

2.2 Cov Khoom Siv Kho Tshuab (Chav Kub)

Vaj tse	904L Cladding	Cov Hlau Carbon Steel Backing
Lub Zog Tawm (min, MPa)	220	240 450 (nyob ntawm qib)
Lub zog tensile (min, MPa)	490	415 535
Kev ntev (min,%)	35	18 25
Qhov nyuaj (siab tshaj plaws)	200 HB	Raws li qib kawm

2.3 Kev Tiv Thaiv Kev Xeb ntawm 904L - Cov Ntaub Ntawv Tseem Ceeb

Kua qaub	Kev Ntsuas	Kub	Tus Nqi Xeb (hli/xyoo)
Sulfuric (H₂SO₄)	10-50%	50°C	<0.1 (zoo heev)
Sulfuric (H₂SO₄)	70-80%	30°C	<0.1
Phosphoric (H₃PO₄)	30-85%	80°C	<0.1
Cov kua qaub Formic	Txhua yam	100°C	<0.1
Cov kua qaub acetic	Txhua yam	100°C	<0.1
Dej hiav txwv	3.5% Cl-	30°C	Kev tiv thaiv pitting zoo (PREN 34)

Cov Kev Txwv:904L tsis pom zoo rau cov kub (> 80 ° C) concentrated sulfuric acid (> 90%) lossis rau cov kev pabcuam hydrochloric acid kub siab. Rau cov neeg ntawd, xav txog nickel alloys (Alloy C-276).

2.4 Cov Kev Xaiv Hlau Tom Qab rau 904L Clad Pipe

Hlau thaub qab	Tus Qauv	Lub zog	Daim Ntawv Thov Tseem Ceeb rau 904L Clad
API 5L X52 / X60 / X65	API 5L PSL2	360 450 MPa cov qoob loo	Cov kav dej kua qaub ntev
SA-106 Qib B	ASTM A106	240 MPa cov txiaj ntsig	Cov kav dej ntawm lub chaw ua roj thiab cov chaw tsim tshuaj lom neeg
SA-210 Gr.C	ASME SA-210	245 MPa cov txiaj ntsig	Cov raj xa dej kub / cov raj xa dej kub
ASTM A333 Qib 6	ASTM A333	240 MPa cov txiaj ntsig	Cov kav dej kua qaub qis (-45 ° C)
ASTM A335 P11 / P22	ASTM A335	205 275 MPa cov txiaj ntsig	Kub siab (>450°C?) Lus Cim: 904L txwv rau ~350°C hauv cov kua qaub

Lus Cim rau qhov kub siab:904L nws tus kheej tsis haum rau cov hlau kub siab tshaj 350-400 ° C hauv kev pabcuam corrosive. Cov hlau backing yuav tiv taus qhov kub siab dua, tab sis lub cladding yuav txwv tag nrho cov kev pabcuam kub. Rau cov kev pabcuam acid kub siab (> 400 ° C), xav txog Alloy 825 lossis Alloy 28 cladding.

2.5 Qhov Ntev ntawm Qhov Ntev

Txoj Kev Tsim Khoom	OD Ntau Yam (hli)	Qhov hnyav ntawm lub plawv (hli)	Qhov hnyav ntawm daim ntaub thaiv (hli)	Qhov Ntev Tshaj Plaws (m)
Vuam (kub dov + JCOE)	219 – 1219	6 – 40	2.0 – 4.0	24
Seamless (extrusion)	25 – 168	4 – 15	2.0 – 3.5	15

Cov tuab cladding pom zoo rau kev pabcuam kua qaub:Yam tsawg kawg nkaus 3.0 hli. Rau cov xwm txheej uas muaj kev kub ntxhov heev (piv txwv li, cov kua qaub sulfuric kub nrog qhov ceev ceev), peb pom zoo kom siv 4.0 hli.

3. Cov Txheej Txheem Tsim Khoom - Kev Sib Txuas Kub Kub + JCOE (Welded, OD ≥219 hli)

Rau cov kav dej kua qaub loj, qhov no yog txoj kev tseem ceeb:

Kauj Ruam	Kev piav qhia
Kev npaj phaj	Phaj 904L (CRA) thiab phaj carbon steel (sab nraub qaum) raug ntxuav, muab tso rau hauv pawg (904L sab hauv), thiab kaw lub tshuab nqus tsev kom tshem tawm cov pa oxygen.
Kev sib txuas kub dov	Cov pawg no raug cua sov rau 1100-1180 ° C thiab dov ntawm qhov sib piv txo qis siab (≥5: 1). Cov khaubncaws sab nraud povtseg sib txuas ua ke los ntawm hlau.
Phaj NDT	100% kev kuaj ultrasonic ntawm lub clad plate bond interface.
Kev tsim JCOE	Lub phaj clad yog ntug milled, tom qab ntawd tsim rau hauv ib lub yeeb nkab qhib siv JCO presses. 904L dhau los ua qhov chaw sab hauv.
Kev sib txuas ntawm cov xov hlau ntev	Ob zaug dhau: sab hauv dhau nrog 904L filler (lossis Alloy 625), sab nraud dhau nrog carbon steel filler.
Weld cladding (xaiv tau)	Sab hauv weld seam yuav raug overlaid nrog 904L lossis Alloy 625 rau kev tiv thaiv corrosion tag nrho.
Kev kho cua sov	Kev txo kev ntxhov siab (yog tias xav tau). 904L tsis xav tau kev kho cua sov tom qab vuam.
NDT & kev kuaj xyuas	Ib Ntu 4.
Kev ua kom qhuav thiab ua kom tawv nqaij tsis muaj zog	Rau 904L sab hauv, kom ntseeg tau tias txheej passive.
Kev tshuaj xyuas zaum kawg & kev xa khoom	Bevel, lub kaus mom, bundling.

Rau seamless (me me txoj kab uas hla, OD ≤168 hli):Kev siv centrifugal casting + kev rho tawm kub (zoo ib yam li cov yeeb nkab clad yav dhau los). Seamless tshem tawm qhov weld longitudinal, nyiam siv rau cov khoom sib pauv cua sov U bend thiab cov kab purity siab.

4. Kev Tshuaj Xyuas & Kev Ntsuas - 904L Clad Pipe

Vim tias 904L yog cov hlau sib xyaw ua ke siab, peb them sai sai rau cov khoom sib xyaw ua ke thiab kev kuaj xyuas corrosion.

Kev Ntsuas	Tus Qauv / Txoj Kev	Scope	Kev lees txais
PMI (XRF) ntawm 904L cladding	Kev Txheeb Xyuas Cov Khoom Zoo	Txhua lub raj (los yog txhua lub phaj)	Paub meej tias Cu, Mo, Ni, Cr nyob rau hauv spec
Bond UT	Kev txiav nthwv dej	100% ntawm cov interface clad	Tsis muaj kev sib cais > 50 hli; tag nrho <2%
Ntev UT	ASTM E213 / ISO 10893 10	100% ntawm lub cev	Tsis muaj cov echoes uas tsis lees paub
Kev sim hydrostatic	1.5 × tsim siab	Txhua lub raj	Tsis muaj qhov xau
Tensile (txheej hlau thaub qab)	Ib qho API 5L / A106 / thiab lwm yam.	Ib qho cua sov	Ua tau raws li qib spec
Tensile (kev sib txuas shear)	Thawb tawm los yog nplhaib txiav	Ib pawg	≥200 MPa (welded)
Qhov nyuaj (904L cladding)	HV10	Pawg	≤200 HV
Kev xeb ntawm cov khoom sib xyaw	ASTM A262 Xyaum E (ntawm 904L)	Ib pawg (xaiv tau)	Tsis muaj kev tawm tsam intergranular
Kev sim ua kom tiaj tus	ASME SA 450	Ib pawg	Tsis muaj kab nrib pleb

Daim Ntawv Pov Thawj:EN 10204 Hom 3.1 (tus qauv). Hom 3.2 nrog tus neeg tim khawv thib peb (SGS, BV, DNV, TÜV) muaj thaum thov.

Kev kuaj ntxiv yog tias thov (them nqi):

● Pitting peev xwm (ASTM G5)

● Tooj liab sulfate - kev sim sulfuric acid rau 904L (tshwj xeeb rau H₂SO₄ kev pabcuam)

5. Daim Ntawv Thov - Qhov Twg 904L Clad Pipe Yog Qhov Kev Xaiv Zoo

5.1 Cov Kav Dej Sulfuric Acid Rau Cov Hoobkas

Kev Sib Tw:Kub sulfuric acid (60-80%, 50-80 ° C) yog corrosive heev rau carbon steel thiab txawm tias 316L. 904L tau yog cov khoom siv txheem rau sulfuric acid alkylation, drying towers, thiab interconnecting piping rau xyoo caum.

Kev daws teeb meem:Cov yeeb nkab 904L uas muaj cov hlau carbon rov qab (SA-106 Gr.B lossis API 5L X52). Cov txheej sab hauv 904L tswj cov kua qaub; cov hlau carbon muab lub zog siab thiab txo cov nqi.

Piv txwv li:24″ OD × 12.7 hli core WT × 3.0 hli 904L cladding, ntev 12 m. Siv rau hauv Middle Eastern sulfur recovery unit.

5.2 Cov Nroj Tsuag Phosphoric Acid Chiv

Kev Sib Tw:Cov kua qaub phosphoric (30-50%, 50-90°C) muaj cov chlorides, fluorides, thiab cov khoom khov. 316L cov qhov thiab cov kab nrib pleb ua rau xeb. 904L muab kev tiv thaiv zoo dua.

Kev daws teeb meem:904L clad yeeb nkab nrog SA-106 Gr.B backing. Cov tooj liab hauv 904L yog qhov tshwj xeeb tshaj yog pab tau rau hauv phosphoric acid.

5.3 Dej Hiav Txwv Txias / Desalination (High Chloride)

Kev Sib Tw:316L tuaj yeem raug kev xeb tawg hauv cov dej hiav txwv uas tsis khov ntawm qhov kub siab tshaj 30-40 ° C. 904L muaj PREN siab dua (34) thiab tiv taus qhov pitting zoo dua.

Kev daws teeb meem:904L yeeb nkab clad nrog API 5L X65 backing rau cov kab txhaj tshuaj dej hiav txwv siab. Siv rau hauv cov platforms offshore rau dej tua hluav taws thiab cov tshuab cua txias.

5.4 Kev Khaws Cia thiab Kev Hloov Chaw Rau Cov Tshuaj Lom

Kev Sib Tw:Cov thoob khib nyiab rau acetic acid, formic acid, lossis cov organic acids sib xyaw xav tau cov hlau sib xyaw kim heev lossis cov hlau carbon uas muaj roj hmab. Cov roj hmab sab hauv tuaj yeem ua tsis tau.

Kev daws teeb meem:Cov yeeb nkab 904L uas muaj hlau nplaum muaj ib qho kev tiv thaiv xeb uas ruaj khov thiab tsis tas yuav saib xyuas. Rau cov yeeb nkab ua liaj ua teb hauv lub tank, cov yeeb nkab uas muaj hlau nplaum welded yog qhov zoo tagnrho.

5.5 Cov Tshuab Ntxuav Pa Hluav Taws Xob (FGD)

Kev Sib Tw:Cov txheej txheem FGD tswj cov gypsum slurries uas muaj pH qis thiab chlorides. Ntau lub FGD absorber towers thiab cov ducts tawm siv 904L lossis cov alloys siab dua.

Kev daws teeb meem:904L clad yeeb nkab rau cov kab slurry recirculation. Backing tuaj yeem yog A106 Gr.B lossis A333 Gr.6 (yog tias txias).

6. Vim li cas ho xaiv Womic Steel rau 904L Clad Pipe?

Lub zog	Cov ntsiab lus
Kev paub txog cov hlau nplaum siab	Peb tau tsim cov yeeb nkab 904L clad rau ntau qhov project acid cog hauv Suav teb, Middle East, thiab Southeast Asia.
Kev sib txuas hlau tiag tiag	Tsis muaj kev pheej hmoo ntawm lub liner tawg - 904L yog txuas mus tas li rau cov hlau thaub qab.
Ntau qhov ntev	Txoj kab uas hla me me uas tsis muaj qhov txuas (extrusion) mus txog rau txoj kab uas hla loj uas txuas tau (1219 mm).
Kev taug qab tag nrho	Txhua tus lej cua sov ntawm 904L phaj raug kaw thiab txuas nrog cov yeeb nkab kawg. PMI tuaj yeem ua tiav ntawm ntau qhov chaw.
Kev tshuaj xyuas los ntawm lwm tus neeg	SGS, BV, DNV, TÜV tau pom thoob plaws hauv kev tsim khoom. EN 10204 Hom 3.2 muaj.
Kev txuag nqi	40 60% pheej yig dua li cov yeeb nkab khov kho 904L uas muaj tib qib siab.

7. Ntim Khoom, Xa Khoom & Lub Sijhawm Ua Ntej

●Mob:Pickled thiab passivated sab hauv 904L nto; sab nraud carbon hlau tej zaum yuav oiled los yog primed.

● Kev tiv thaiv kawg:Cov hau yas (cov hau hlau rau cov kab uas loj).

●Kev Muab Ua Ib Pawg:Rau cov me me uas muaj txoj kab uas hla (<20″) - cov pob khoom nrog cov spacers. Rau cov loj uas muaj txoj kab uas hla - ib lub txaj me me.

●Lub sijhawm ua ntej (thawj qhov kev txiav txim):14-18 lub lis piam (904L phaj nrhiav thiab dov). Rov xaj dua: 10-12 lub lis piam.

●MOQ:Tsis muaj MOQ nruj heev; txais kev txiav txim sim (piv txwv li, 100-200 meters). Tus nqi siab dua rau cov khoom me me.

8. Cov Lus Nug Feem Ntau (FAQ) - 904L Clad Pipe

Q1: Thaum twg kuv yuav tsum xaiv 904L hla 316L rau cov yeeb nkab clad?
A: Xaiv 904L thaum qhov kev pabcuam cuam tshuam nrogsulfuric acid, phosphoric acid, formic/acetic acid, lossis thaum 316L qhia txog kev xeb lossis kev xeb dav dav hauv koj ib puag ncig. 904L kuj zoo dua rau dej hiav txwv sov (chlorides ntau dua). Yog tias cov kua tsuas yog me ntsis acidic thiab tsis muaj chlorides, 316L yuav txaus.

Q2: Qhov kub siab tshaj plaws rau 904L yog dab tsi?
A: Hauv kev pabcuam corrosive, 904L feem ntau tsuas yog txwv rau350-400°C. Qhov siab tshaj qhov ntawd, cov khoom siv yuav ua rau muaj kev cuam tshuam lossis poob qhov tsis kam rau xeb. Rau kev pabcuam kua qaub kub siab (> 400 ° C), xav txog Alloy 825 lossis 625.

Q3: Puas siv tau 904L rau kev pabcuam roj qaub (H₂S)?
A: NACE MR0175 / ISO 15156 tso cai rau 904L rau kev pabcuam qaub tsuas yog nyob rau hauv cov xwm txheej tsis kub heev: qis H₂S ib nrab siab, qis chlorides, pH >3.5, kub <60°C. Rau cov roj qaub ntub ib txwm muaj, Incoloy 825 yog qhov zoo dua.

Q4: Yuav tsum siv cov hlau twg los vuam 904L clad yeeb nkab?
A: Rau sab hauv hla (904L txog 904L), sivCov hlau nplaum 625 (ERNiCrMo-3)los yog904L muab tub lim (ER385). Alloy 625 yog qhov tshwm sim ntau dua thiab muab kev nyab xeeb dua. Tsis txhob siv 316L filler.

Q5: Puas muaj 904L clad yeeb nkab muaj nyob rau hauv cov kab uas hla me me (piv txwv li, 2 ″) rau kev siv twj paj nruag?
A: Yog, los ntawm peb cov txheej txheem extrusion seamless. Yam tsawg kawg nkaus OD yog kwv yees li 25 hli (1″). Cladding thickness 2.0 2.5 hli.

Q6: 904L piv rau Alloy 28 (UNS N08028) li cas?
A: Ob qho tib si yog cov hlau austenitics siab nrog PREN zoo sib xws (34 vs 38). Alloy 28 muaj Cr thiab Ni siab dua, thiab zoo dua tiv taus chloride siab + kub siab pitting. Rau sulfuric acid, ob qho tib si zoo heev. Alloy 28 kim dua me ntsis. 904L yog ntau dua hauv North American acid nroj tsuag; Alloy 28 hauv European specifications.

Q7: Koj puas tuaj yeem muab 904L clad yeeb nkab nrog A333 Gr.6 backing rau kev pabcuam kub qis?
A: Yog. 904L tseem ductile ntawm qhov kub qis; lub A333 Gr.6 backing yog impact sim ntawm -45 ° C. Kev sib xyaw ua ke no yog tsim rau arctic acid pipelines (tsis tshua muaj tab sis ua tau).

Q8: Koj puas muab kev lees paub tias lub cladding tsis muaj kev dilution los ntawm carbon steel?
A: Yog. Cov txheej txheem sib txuas ntawm lub tshuab nqus tsev kub tiv thaiv kev oxidation thiab txo qis kev sib kis. Peb ua PMI ntawm qhov chaw cladding kom paub tseeb tias muaj pes tsawg leeg. Thaj chaw dilution feem ntau tsuas yog ob peb microns tuab thiab tsis raug rau cov kua.

Q9: Lub zog tso zis ntawm 904L cladding yog dab tsi?
A: 904L muaj lub zog tso zis kwv yees li 220 MPa (32 ksi) nyob rau hauv qhov xwm txheej annealed. Qhov no qis dua li cov hlau carbon backing tab sis qhov tuab cladding yog me me; lub plawv hlau carbon nqa lub zog hoop. Rau kev tsim siab, peb siv cov hlau backing phab ntsa tuab xwb; lub cladding yog suav tias yog kev tso cai xeb.

Q10: Koj puas muab cov beveled xaus nrog 904L buttering?
A: Yog. Peb tuaj yeem npaj cov bevels (30-35°, 1.6 hli av) thiab siv cov weld overlay (buttering) ntawm Alloy 625 lossis 904L filler rau ntawm lub ntsej muag bevel. Qhov no tiv thaiv kev dilution ntawm 904L cladding thaum lub sijhawm vuam girth teb.

Q11: Koj puas tuaj yeem muab 904L clad heat exchanger U-bend tubes?
A: Yog, rau cov yeeb nkab seamless clad (OD ≤168 hli). Peb txias khoov, txo kev ntxhov siab, thiab 100% NDT (PT lossis ET) thaj chaw khoov. U-khoov rau cov kev pabcuam kua qaub yog qhov tshwm sim hauv cov nroj tsuag tshuaj.

Q12: Kuv yuav ua li cas thiaj li tau ib qho kev sim me me?
A: Muab OD, qhov hnyav ntawm lub hauv paus, qhov tuab ntawm cladding, ntev (m), thiab qib hlau thaub qab. Peb yuav hais nqe rau kev sim ua pawg (piv txwv li, 50 100 meters). Xav tias yuav muaj tus nqi siab dua rau cov khoom me me.

9. Daim Ntawv Teev Npe Rau 904L Clad Pipe

Yuav kom paub tseeb tias cov lus qhia tseeb, thov muab:

●Qib hlau thaub qab(API 5L X52/60/65, SA-106 Gr.B, SA-210 Gr.C, A333 Gr.6, los yog A335 P11/P22)

● Txoj kab uas hla sab nraud (OD)thiabphab ntsa tuab

● 904L cladding tuab(pom zoo 3.0 hli rau kev pabcuam kua qaub)

● Qhov ntev ib daimthiabtag nrho ntev (meters)

● Txoj kev tsim khoom(welded rau OD ≥219 hli; seamless rau OD ≤168 hli)

● Tus qauv siv tau(API 5LD, ASME, EN, lossis cov lus qhia ntawm cov neeg siv khoom)

● Qib kev tshuaj xyuas(Hom 3.1 tus qauv; Hom 3.2 nrog rau lwm tus)

● Xaus tiav(dawb, beveled, beveled + 904L buttering)

● Lub sijhawm xa khoom(FOB Tuam Tshoj chaw nres nkoj, CIF chaw nres nkoj)

Womic Steel yuav teb nrog cov ntaub ntawv qhia txog kev siv tshuab, kev hais nqe lag luam, thiab txoj kev npaj zoo.

10. Tiv tauj Womic Steel - Kws Tshwj Xeeb Yeeb Nkab Uas Ua Los Ntawm Cov Hlau Alloy Siab

Yog tias koj tab tom nrhiav ib qho316L kab hlau yeeb nkabnrog rau txhua yam carbon lossis alloy steel backing, tiv tauj peb kom tau txais kev sab laj dawb thiab tsis muaj kev lav phib xaub.

Lub Vas Sab: www.womicsteel.com
Email: sales@womicsteel.com
Xov tooj / WhatsApp / WeChat:

Victor: +86 15575100681

Nkaus: +86 18390957568

Womic Steel - Cov kev daws teeb meem yeeb nkab 316L clad rau CO₂ kev pabcuam, boiler, cua sov sib pauv, qhov kub qis, thiab kev siv kub siab.

Yav dhau los: 316L Stainless Steel Lined Clad Pipe | Carbon & Alloy Steel Backing rau CO₂ Service, Boiler, Heat Exchanger & Low Temperature – Womic Steel

Tom ntej no: Chaw Tsim Khoom Siv Yeeb Nkab Bimetal Clad | Cov Yeeb Nkab Metallurgically Bonded CRA Lined - Womic Steel