1. Cov ntaub ntawv txheej txheem
347H stainless hlau yeeb nkab yog high-carbon niobium-stabilized austenitic stainless hlau paub txog nws superior kub-kub lub zog, weldability zoo heev, thiab zoo heev kuj rau intergranular corrosion. Qhov sib ntxiv ntawm niobium (Nb) txhim kho kev nkag siab lub zog thiab tiv thaiv chromium carbide nag lossis daus raws cov ciam teb, ua kom muaj kev tiv thaiv zoo rau kev nkag siab.
2.Chemical Composition (Tswj)
| Element | Cov ntsiab lus (%) |
| C | 0.04-0.10 Nws |
| Cr | 17.0-19.0 Nws |
| Ni | 9.0-13.0 Nws |
| Si | ≤1.0 |
| Mn | ≤ 2.00 |
| P | ≤ 0.045 |
| S | ≤ 0.030 |
3. Mechanical & Corrosion Properties
Mechanical Properties (ASTM A213):
- Tensile zog ≥ 515 MPa
- Yield zog ≥ 205 MPa
- Elongation ≥ 35%
- Creep rupture zog ntawm 600 ° C: > 100 MPa
Corrosion Resistance:
- Zoo heev intergranular corrosion kuj vim Nb stabilization
- Kev tiv thaiv zoo hauv nitric acid, acetic acid, alkaline ib puag ncig, thiab dej hiav txwv
- Kuaj rau molten ntsev corrosion, pov thawj kev ua tau zoo hauv CSP molten ntsev cia tank
- Me ntsis rhiab heev rau chloride-induced pitting tshaj 316L, txo los ntawm passivation thiab kho nto
4. Cov Khoom Specifications
Qhov Loj:
- Seamless Yeeb Nkab: OD 1/4 "-36", phab ntsa thickness SCH10-SCH160
- Precision Tubes: OD 10mm-108mm, txias kos
- Welded Yeeb Nkab: Nyias rau tuab phab ntsa kav siv TIG, PAW, thiab SAW vuam
- Ntev: mus txog 12 meters; kev cai txiav lengths muaj
Manufacturing Standards:
- ASTM A213 / A312, ASME SA213 / SA312
EN 10216-5, GB / T 5310
- Kev ua raws li lub nkoj siab: PED, AD2000 W0, ASME Code Tshooj VIII Div. 1
5. Cov txheej txheem tsim khoom
1. Raw Khoom: Certified steel billets los ntawm domestic thiab thoob ntiaj teb mills
2. Kub Rolling: Billets rhuab mus rau 1150-1200 ° C, pierced thiab dov rau loj-inch los yog tuab-wall raj
3. Cold Drawing: Ntau-dhau txias kos duab rau precision loj thiab nto tiav
4. Thaum tshav kub kub kho: daws annealing ntawm 980-1150 ° C, ceev dej quenching kom suppress carbide nag lossis daus
5. Welding: GTAW (TIG), PAW, thiab SAW txheej txheem, siv ER347 muab tub lim rau stabilization; rov qab purging xaiv muaj
6. Nto tiav: Pickling, passivation (HNO₃/HF), thiab mechanical polishing (Ra ≤ 0.2µm raws li kev thov)
7. Kev tshuaj xyuas: 100% RT (radiographic kuaj) rau welds; ultrasonic, hydrostatic, PMI, intergranular corrosion kuaj raws li xav tau
6. Daim ntawv pov thawj & Kev Tswj Xyuas Zoo
Womic Steel's 347H stainless hlau kav tau ntawv pov thawj hauv qab no:
- ISO 9001: 2015
- PEB 2014/68/EU
AD 2000 W0
- ASME Boiler & Pressure Vessel Code
Txhua batch tau txais kev sim nruj, suav nrog:
- Mechanical tests (tensile, impact, flattening, flaring)
- Kev kuaj Corrosion (IGC rau ASTM A262)
- Kev sim tsis muaj kev puas tsuaj (UT, RT, Eddy tam sim no)
- Dimensional soj ntsuam thiab tag nrho traceability
7. Daim ntawv thov teb
347H stainless hlau yeeb nkab yog dav siv hauv:
- Kev Tsim Hluav Taws Xob: Superheaters, reheaters, cov kav dej loj hauv cov hluav taws xob subcritical thiab supercritical thermal fais fab nroj tsuag
- Hnub Ci Thermal Zog: Molten ntsev cua sov tso tsheb hlau luam (450-565 ° C), siv pov thawj hauv cov haujlwm thoob plaws Suav teb (Yumen, Haixi)
- Petrochemical: Rauv raj, hydroprocessing reactors (resistant rau H₂-H₂S-H₂O ib puag ncig)
- Aerospace: Lub cav tso pa tawm thiab cov kav dej turbine cua (ua haujlwm txog 850 ° C)
- Kub Exchangers: High-temperature condensers thiab piping nyob rau hauv refineries thiab marine systems
8. Lub Sijhawm Ua Haujlwm Ntau Lawm
- Seamless Tubes (Standard Size): 15-25 hnub
- Kev Cai Dimensions / Thick Wall Pipes: 30-45 hnub
- Loj-Scale Orders: Muaj peev xwm ntau dua 3,000 tons / hli ua kom xa khoom sai txawm tias nyob rau lub sijhawm ceev
9. Ntim & Logistics
Womic Steel muaj kev ruaj ntseg thiab customizable ntim:
- Seaworthy Ntoo Case lossis Steel Ncej Bundles
- Yas kawg lub kaus mom, tiv thaiv xeb oiling, thiab zaj duab xis qhwv
- Tag nrho cov ntim export raws li ISPM-15 tus qauv
Logistics Advantage:
- Cov nqi sib tw CIF / CFR
- Kev xa khoom sai sai rau cov teb chaws Asia, Is Nrias teb, Europe, thiab Middle East
- Txhawb nqa kev tiv thaiv kev khoov, tiv thaiv plam, thiab tiv thaiv kev sib tsoo thaum xa khoom
10. Kev Pabcuam
- Khoov (txias thiab kub-forming)
- Precision Txiav
- Threading & End Finishing
- Vuam los ua ke (spools thiab luj tshib)
- Kev cai machining ib daim duab
11. Vim li cas thiaj xaiv Womic Steel?
- Hauv tsev R&D & QA Lab
- Cov khoom lag luam ruaj khov ntawm cov khoom siv raw ua kom lub sijhawm xa khoom luv
- Ntau xyoo ntawm metallurgical kev paub, tshwj xeeb tshaj yog nyob rau hauv high-temperature alloys
- Tag nrho traceability thiab cov ntaub ntawv rau kev ua raws li cov cuab yeej siab
- Ib qho kev daws teeb meem ib leeg rau kev yuav khoom, ua, thiab xa tawm ntawm cov yeeb nkab steel hlau
Rau cov ntaub ntawv kev tshaj lij, tus nqi, thiab cov lus hais txog kev cai, hu rau Womic Steel hnub no. Peb npaj txhij los txhawb koj qhov kev ua tau zoo ntawm cov kav dej xav tau nrog precision, ceev, thiab kev ncaj ncees.
Xaiv Womic Steel Group ua koj tus khub txhim khu kev qha rauStainless hlau tubesthiab unbeatable kev xa khoom. Txais tos nug!
Lub vev xaib: www.womicsteel.com
Email: sales@womicsteel.com
Tel/WhatsApp/WeChat: Victor: +86-15575100681 los yog Jack: +86-18390957568
Post lub sij hawm: Apr-16-2025