Taw qhia
Ordering stainless hlau los yog npib tsib xee alloy khoom yam tsis muaj kev mob siab rau yog ib qho ntawm qhov yuam kev kim tshaj plaws hauv kev lag luam. Ib qho kev xa khoom ntawm ib qho uas tsis yog - cov khoom ua raws tuaj yeem ua rau muaj kev kaw ntau lawm, kev tshuaj xyuas ua tsis tiav, qhov haujlwm qeeb, thiab kev lav phib xaub uas dwarf tus nqi yuav khoom qub.
Qhov xov xwm zoo: tsib lub ntsiab lus nug, nug ua ntej tso ib qho kev txiav txim, tuaj yeem tshem tawm feem ntau ntawm cov khoom lag luam tsim nyog. Cov lus nug no suav nrog cov ntaub ntawv pov thawj, kev ua raws li cov qauv kev ua tau zoo, cov khoom siv cov khoom siv traceability, lub sijhawm ua haujlwm, thiab kev tswj hwm kev ua raws cai - tsib tus ncej ntawm lub luag haujlwm ntawm cov khoom siv alloy.
Kev Lag Luam Fact:Raws li kev tshawb fawb cov ntaub ntawv tsis ua hauj lwm, ntau dua 60% ntawm cov khoom siv ua tsis tiav thaum ntxov vim yog cov khoom siv tsis raug rau cov khoom siv tsis raug, hloov pauv, lossis tsis muaj ntawv pov thawj ntawm qhov kev yuav khoom.
Phau ntawv qhia no taug kev los ntawm txhua lo lus nug kom ntxaws, piav qhia seb tus neeg tsim khoom tsim nyog yuav tsum teb li cas, thiab muab cov ntaub ntawv siv los pab koj ntsuas cov lus teb kom raug.
Table 1: 5 Cov Lus Nug Ntawm Ib Nrab - Txheej txheem cej luam
|
# |
Qeb |
Lus nug |
Vim Li Cas Nws Tseem Ceeb |
|
Q1 |
Cov ntaub ntawv pov thawj |
Koj puas tuaj yeem muab daim ntawv pov thawj Mill Test (MTC)? |
Txheeb xyuas cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab; yuav tsum tau tswj kev lag luam |
|
Q2 |
Cov qauv zoo |
Cov txheej txheem thoob ntiaj teb twg koj cov khoom ua tau raws li? |
Pom zoo ua raws li ASTM, EN, JIS, lossis lwm yam tshwj xeeb; tiv thaiv tsis raug nqi |
|
Q3 |
Traceability |
Koj puas tuaj yeem taug qab cov khoom no rau nws qhov qub cua sov / ntau? |
Ua kom rov qab tswj xyuas, kev lees paub kev lees paub, thiab kev tshuaj xyuas ua raws |
|
Q4 |
Lead Time & Supply Chain |
Koj lub sijhawm ua khoom lag luam thiab cov khoom muag tam sim no yog dab tsi? |
Tiv thaiv qhov project qeeb thiab nthuav tawm ib qho - qhov chaw xa khoom txaus ntshai |
|
Q5 |
Ua raws li & Export Controls |
Puas yog cov hlau no puas muaj kev faib tawm tswj kev faib tawm lossis txwv qhov kawg- siv? |
Zam kev ua txhaum cai lij choj, kev xa khoom qeeb, thiab kev nplua nplua |
Lub moj khaum no siv rau tag nrho cov khoom siv hlau stainless thiab npib tsib xee alloy cov ntaub ntawv: ntawv, coil, phaj, yeeb nkab, raj, bar, fittings, flanges, thiab forgings.
Nqe Lus Nug 1:Koj puas tuaj yeem muab daim ntawv pov thawj Mill Test (MTC) rau cov khoom no?
Daim Ntawv Pov Thawj Zeb Xeem (MTC) - kuj hu ua Daim Ntawv Qhia Txog Cov Khoom Siv (MTR) lossis Daim Ntawv Pov Thawj Ua Raws Cai (CoC) - yog cov ntaub ntawv tseem ceeb uas txuas lub cev ntawm cov hlau rau nws cov khoom ntsuas. Yog tsis muaj nws, koj tsis muaj pov thawj tseeb tias cov khoom ua tau raws li koj qhov kev qhia tshwj xeeb.
Ib qho MTC yog tib daim ntawv uas ua pov thawj tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab tau ntsuas - tsis xav.
Hauv kev tswj hwm kev lag luam (roj & roj, cov hlab ntsha siab, nuclear, tshuaj), muab cov khoom siv tsis muaj MTC raug cai yog kev ua txhaum cai hauv feem ntau cov cai.
MTCs yuav tsum muaj rau CE kos npe raws li EU Cov Khoom Siv Hluav Taws Xob (PED 2014/68/EU).
ASME fabrication khw yuav tsis tuaj yeem txais cov khoom tsis muaj daim ntawv pov thawj zeb traceable ntawm ASME Boiler thiab Pressure Vessel Code Tshooj II.
Flag liab:Yog tias tus neeg muag khoom hais tias "Peb tuaj yeem tau txais koj MTC tom qab" lossis "Peb cov khoom muaj ntawv pov thawj - ntseeg peb," taug kev mus. MTCs yuav tsum tau muab los ntawm lub tshuab ua khoom thiab nrog los yog ua ntej cov khoom.
Dab tsi ua tiav MTC Yuav tsum muaj
Cov lus 2 qhia meej txhua qhov kev xav tau hauv kev ua raws MTC rau cov khoom lag luam stainless hlau thiab npib tsib xee alloy, qhov txawv ntawm qhov yuav tsum tau ua thiab cov khoom raws cai.
Table 2: Mill Test Certificate (MTC) Cov ntsiab lus xav tau
|
MTC Data Field |
Description / Qhov tseem ceeb |
xwm txheej |
|
Thaum tshav kub kub / Lot Number |
Cov cim cim txuas cov khoom siv rau nws cov khoom tsim tawm |
Yuav tsum tau |
|
Chemical Composition (%) |
Cr, Ni, Mo, C, Si, Mn, S, P (thiab lwm yam hauv qib) |
Yuav tsum tau |
|
Tensile zog (MPa / ksi) |
Qhov kawg tensile zog; yuav tsum tau raws li spec yam tsawg kawg nkaus |
Yuav tsum tau |
|
Yield zog (MPa/ksi) |
0.2% pov thawj kev ntxhov siab; tseem ceeb rau cov khoom siv siab |
Yuav tsum tau |
|
Elongation (%) |
Qhov taw qhia Ductility; Yam tsawg kawg nkaus rau ASTM / EN / JIS |
Yuav tsum tau |
|
Hardness (HB / HRB / HRC) |
Nto thiab tej hardness; muaj feem xyuam rau kev siv hnav |
Yuav tsum tau (ntau yam specs) |
|
Impact Toughness (J / ft·lbf) |
Charpy V-ntiv tes zog; xav tau rau qis -temp kev pabcuam |
Cov xwm txheej |
|
Dimensional Inspection Report |
Thickness, dav, OD, WT, ntev tolerances |
Yuav tsum tau |
|
Thaum tshav kub kub kho mob |
Annealed, tov kho, quenched, thiab lwm yam. |
Yuav tsum tau |
|
Mill Stamp / Tso Cai Kos Npe |
Daim ntawv pov thawj tub ceev xwm lub npe, lub npe, thiab lub thwj cim |
Yuav tsum tau |
|
Thib peb -Tag Nrho Kev Tshawb Fawb |
SGS, Bureau Veritas, TÜV, CCIC yog xav tau los ntawm cov neeg yuav khoom |
Cov xwm txheej |
|
EN 10204 Daim ntawv pov thawj hom |
2.1 / 2.2 / 3.1 / 3.2 - txhais cov neeg ua pov thawj kev xeem |
Yuav tsum tau (EU / PED) |
EN 10204 txhais plaub hom ntawv pov thawj. Hom 3.1 yog muab los ntawm cov chaw tsim khoom tus kheej tso cai soj ntsuam; Hom 3.2 xav tau co-kos npe los ntawm tus neeg sab nrauv sab nrauv. Rau cov ntawv thov tseem ceeb, nco ntsoov qhia hom xav tau hauv koj daim ntawv xaj yuav khoom.
Yuav Ua Li Cas Txheeb Xyuas MTC Yog Qhov Tseeb
Hu rau lub hauv paus zeb ncaj qha siv cov ntaub ntawv tiv tauj los ntawm lawv lub vev xaib official - tsis yog los ntawm daim ntawv pov thawj nws tus kheej.
Paub meej tias tus naj npawb cua sov ntawm daim ntawv pov thawj sib tw rau cov cua sov / ntau tus lej stamped lossis stenciled ntawm cov khoom siv lub cev.
Hla -xyuas cov tshuaj muaj pes tsawg leeg ntawm cov khoom siv hluav taws xob tawm tsam qhov kev qhia tshwj xeeb tshaj tawm rau qib uas tau tshaj tawm.
Ceev faj rau MTCs qhov twg txhua tus nqi tsaws raws nraim ntawm qhov kev txwv tshwj xeeb (tseem tsis tau pom zoo thiab qhov ntsuas kev dag ntxias).
Rau siab -tus nqi lossis kev nyab xeeb- cov lus txiav txim tseem ceeb, xa cov khoom pov thawj zoo (PMI) thaum tau txais.
Nqe lus nug 2:Yam Kev Cai Thoob Ntiaj Teb Uas Koj Cov Khoom Ua Tau Zoo?
Cov txheej txheem cov ntaub ntawv txhais cov tshuaj muaj pes tsawg leeg txwv, cov cuab yeej cuab tam yam tsawg kawg nkaus, qhov ntev kam rau ua, thiab cov kev ntsuas rau txhua qib alloy. Kev qhia "316 stainless hlau" yam tsis tau hais txog tus qauv tsis txaus - tib qib uas tsim los rau ASTM A240, EN 10088-2, thiab JIS G4304 tuaj yeem muaj cov khoom sib txawv me ntsis, kev ua siab ntev, thiab kev xeem yuav tsum tau ua.
Vim li cas Standards Alignment Matters
Kev kos duab engineering, cov txheej txheem vuam, thiab cov hlab ntsha siab tag nrho cov qauv siv tshwj xeeb. Cov khoom tsim los rau cov qauv sib txawv yuav tsis raug cai lossis kev hloov pauv tau.
Cov kev cai ntshuam hauv ntau lub teb chaws xav tau cov ntaub ntawv kom tau raws li cov qauv kev lees paub hauv zos rau kev lis kev cai los yog daim ntawv pov thawj cov khoom.
Kev tuav pov hwm thiab kev lees paub yuav raug muab pov tseg yog tias cov qauv khoom tsis sib haum.
Qhov Zoo Tshaj Plaws:Ib txwm hais tag nrho cov qauv tsim, qib, thiab xyoo ib tsab nyob rau hauv koj daim ntawv yuav khoom (xws li, "ASTM A312 / ASME SA-312, Qib TP316L, tsab ntawv tshiab"). Cov lus piav qhia dav dav tsim qhov tsis meej meej uas cov neeg muag khoom tuaj yeem siv tau.
Common Standards los ntawm cov khoom daim ntawv thiab cheeb tsam
Daim duab 3 qhia txog cov qauv tseem ceeb thoob ntiaj teb rau txhua daim ntawv loj stainless hlau thiab npib tsib xee alloy khoom, ua kom muaj kev sib piv ncaj qha thoob plaws hauv Teb Chaws Asmeskas, European, thiab Nyiv cov khoom siv.
Table 3: International Standards Reference - Stainless hlau & Nickel Alloy khoom
|
Yam khoom |
ASTM (USA) |
EN (Tebchaws Europe) |
JIS (Nyiv) |
Cov Lus Qhia Tseem Ceeb |
|
Stainless Hlau Sheet / Coil |
ASTM A 240 Cov Lus Qhia |
TS EN 10088-2 |
JIS G4304 |
Flat-cov khoom dov; qhia qib (304, 316, 321, 904L, thiab lwm yam) |
|
Stainless hlau phaj |
ASTM A 240 Cov Lus Qhia |
TS EN 10028-7 |
JIS G4304 |
Siab phaj phaj; xyuas PED 2014/68/EU rau EU tej yaam num |
|
Seamless Yeeb Nkab & Tube |
ASTM A 312 Cov Lus Qhia |
TS EN 10216-5 |
JIS G3463 |
Paub meej Teem sijhawm / phab ntsa thickness thiab kawg tiav (PE, BE, T & C) |
|
Welded yeeb nkab |
ASTM A358 / A778 / ASTM A358 / ASTM A778 / ASTM A358 / ASTM A358 / A778 / ASTM A358 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358 / ASTM A358 / A778 / ASTM A358 / A778 / ASTM A358) Kev lees paub |
TS EN 10217-7 |
JIS G3459 |
Qhia cov txheej txheem vuam (TIG/SAW) thiab seb puas muaj hydro- kuaj |
|
Bar & Rod |
ASTM A276 / A479 Cov Lus Qhia |
TS EN 10272 |
JIS G4303 |
Paub meej tias qhov chaw saum npoo (kub dov, txias kos, hauv av, tev) |
|
Fittings (lub luj tshib, Tee, thiab lwm yam) |
ASTM A403 / A182 |
TS EN 10253-4 |
JIS B2313 |
Kev ntsuas siab thiab qhov kawg kev sib txuas yuav tsum ua raws li cov kav dej raws li lub sijhawm |
|
Flanges |
ASTM A182 Cov Lus Qhia Tshwj Xeeb |
TS EN 1092-1 |
JIS B2220 |
Paub meej flange ntsej muag (RF, FF, RTJ) thiab chav kawm siab (150 # - 2500 #) |
|
Nickel Alloy Phaj / Ntawv |
ASTM B443 (625) thiab B424 (825) |
TS EN 10095 / VdTÜV |
JIS H4551 |
Alloy 625, 825, C-276, 400; txheeb xyuas Ni/Mo/Cr rau spec |
|
Nickel Alloy Yeeb Nkab / Tube |
ASTM B444 (625) / B165 (400) |
EN 10216-5 / DIN 17751 |
JIS H3300 |
Qhia meej qhov xwm txheej: annealed vs. txias-ua haujlwm; txheeb xyuas PMI daim ntawv qhia |
ASTM=American Society for Testing and Materials. EN=European Norm (CEN). JIS=Japanese Industrial Standard. Nco ntsoov paub meej tias koj tus neeg muag khoom muaj daim ntawv pov thawj cov khoom siv tau rau cov qauv thov.
Yam Uas Tsim Nyog Tsim Nyog yuav tsum qhia rau koj
Tus qauv tsim nyog, qib, thiab sub-hom (piv txwv li, ASTM A276 Hom 316L, Hom A)
Seb cov khoom puas yog dual{0}} ntawv pov thawj (piv txwv li, 316/316L) thiab yog tias muaj, cov cuab yeej twg txwv tswj hwm
Muaj cov kev xeem ntxiv (xws li S2 intergranular corrosion test ib ASTM A262)
Txawm hais tias qhov sib npaug lossis lwm cov qauv siv tau, thiab cov ntaub ntawv pov thawj ntawm qhov sib npaug
Nqe Lus Nug 3:Koj puas tuaj yeem taug qab cov khoom no rov qab rau nws qhov qub cua sov / ntau?
Traceability yog cov ntaub ntawv muaj peev xwm los txuas cov khoom siv lub cev - los ntawm cov khoom xa rov qab mus rau qhov tshwj xeeb yaj, cam khwb cia, lossis cua sov ntawm lub tshuab tsim. Thaum muaj qhov xwm txheej zoo, rov qab los, lossis tshawb xyuas kev tswj hwm, tag nrho kev taug qab yog dab tsi cais cov teeb meem tswj tau los ntawm lub koom haum- teeb meem thoob plaws.
Peb theem ntawm Traceability
Qib 1 - Batch/Lot Traceability: Cov khoom raug txheeb xyuas rau ntau lawm; Tej zaum yuav tsis paub tseeb. Txais tau tsuas yog rau qis- pheej hmoo, tsis yog- cov ntawv thov kev tsim qauv.
Qib 2 - Thaum tshav kub kub Traceability: Txhua daim tuaj yeem txheeb xyuas tus lej tshwj xeeb yaj, nrog rau MTC sib xws. Yuav tsum muaj rau feem ntau cov kev lag luam thiab kev tsim khoom siv.
Qib 3 - Tag Nrho Cov Chain Traceability: Txhua kauj ruam ua haujlwm (rolling, annealing, cutting, coating) yog sau tseg. Yuav tsum tau siv rau nuclear, aerospace, thiab kev siv tshuaj.
Tiag -Kev cuam tshuam ntiaj teb:Nyob rau hauv ib qho kev lees paub ntawm kev hloov pauv ntawm cov khoom siv hauv cov nroj tsuag petrochemical, qhov tsis muaj cua sov -qib traceability txhais tau tias 4,000 meters ntawm cov kav dej yuav tsum tau hloov ntawm tus nqi siab tshaj USD 12 lab - vim tias cov khoom cuam tshuam tsis tuaj yeem txawv ntawm cov khoom siv raws li kev cai.
Traceability Requirements los ntawm Kev Lag Luam
Table 4 cov ntsiab lus yam tsawg kawg nkaus traceability cov qauv thoob plaws loj kawg - siv kev lag luam rau stainless hlau thiab npib tsib xee alloy khoom.
Table 4: Traceability Requirements by End-Siv Kev Lag Luam
|
Xaus-Siv Kev Lag Luam |
Cov qauv tseem ceeb |
Min. Yuav tsum muaj Traceability |
Cov ntawv tseem ceeb rau cov neeg yuav khoom |
|
Roj & Gas / Upstream |
NACE MR0175 / ISO 15156, API 5LC |
Kub + ntau + PWHT cov ntaub ntawv |
Tag nrho traceability rau thawj cov cua sov yuav tsum tau; MTC yuav tsum nrog cov khoom |
|
Cov Khoom Siv Hluav Taws Xob & Boilers |
ASME VIII, EN 13445, PED 2014/68/EU |
EN 10204 3.1 lossis 3.2 |
3.2 yuav tsum muaj kev ywj pheej thib peb - tog neeg pov thawj ntawm kev xeem |
|
Aerospace & Kws muaj txuj ci |
AMS, NADCAP, AS 9100D |
Ua kom sov + yaj traceability |
Dual daim ntawv pov thawj feem ntau yuav tsum tau; daim ntawv pov thawj ntawm conformance yuav tsum tau |
|
Khoom noj khoom haus & dej haus / Pharma |
FDA, EHEDG, 3-A Sanitary Standards |
Nto roughness Ra qhia + daim ntawv pov thawj kub |
Ra Tsawg dua lossis sib npaug li 0.8 µm rau kev sib cuag zaub mov; 316L nrog tsawg sulfur nyiam |
|
Nuclear zog |
RCC -M, ASME III, ISO 19443 |
Tag Nrho N -stamp traceability |
Daim ntawv pov thawj ntawm keeb kwm + lub teb chaws ntawm yaj yuav tsum tau; nruj dual- tswj qhov tseem ceeb |
|
Kev ua tshuaj lom neeg |
NACE, ASTM G48 (pitting xeem) |
Kub + corrosion test report |
Rau duplex SS: PREN yuav tsum tau kuaj xyuas; ferrite cov ntsiab lus qhia yuav tsum tau |
|
Kev tsim kho / Architecture |
ASTM A666, EN 1993 (Eurocode 3) |
Mill daim ntawv pov thawj (2.1 lossis 2.2 tau) |
Aesthetic qib (BA, 2B, daim iav) xav tau daim ntawv pov thawj soj ntsuam saum npoo |
Cov kev xav tau cuam tshuam txog cov qauv kev lag luam raws li xyoo 2024-2025. Cov kev qhia tshwj xeeb ntawm qhov project yuav ua kom nruj dua. Ib txwm tshuaj xyuas qhov phiaj xwm zoo (PQP) thiab tshuaj ntsuam xyuas phiaj xwm (ITP) ua ntej ua tiav cov khoom xa tuaj.
Tswv yim Traceability Requirements rau koj daim ntawv yuav khoom
Qhia kom meej tias cov xov tooj cua sov yuav tsum raug cim rau ntawm txhua yam khoom (stamped, stenciled, lossis labeled) - tsis yog ntawm daim ntawv pov thawj.
Yuav kom MTCs yog cua sov- tshwj xeeb - tsis yog qhov nruab nrab ntawm cov cua sov ntau.
Rau cov khoom fabricated, xav tau cov ntaub ntawv traceability cov ntaub ntawv (MTR) uas txuas cov khoom tiav cov khoom serial / cov khoom naj npawb rov qab mus rau cov xov tooj cua sov.
Qhia kom meej ntev npaum li cas cov ntaub ntawv khaws cia yuav tsum khaws cia (feem ntau 10-30 xyoo rau cov cuab yeej siv siab).
Nqe Lus Nug 4:Koj Lub Sijhawm Ua Haujlwm tam sim no thiab cov khoom muag yog dab tsi?
Lub sij hawm txhuas yog ib qho ntawm cov kev pheej hmoo tsawg tshaj plaws hauv kev yuav khoom alloy. Stainless hlau thiab npib tsib xee alloy khoom - tshwj xeeb tshaj yog tsis yog - cov qib txheem, cov kab loj loj, thiab cov ntawv tshwj xeeb - tsis yog cov khoom lag luam. Mill ntau lawm khiav yog teem lub hli ua ntej, thiab ib qho kev xa tuaj tsis tuaj yeem ua rau hauv qhov project ncua sij hawm raug nqi ntau ntawm cov khoom siv.
Vim li cas Lead Time Verification tseem ceeb heev
Nickel alloy phaj, seamless raj, thiab kev cai forgings tsis tu ncua yuav tsum tau 12-24 lub lis piam los ntawm kev txiav txim mus rau tus me nyuam.
Kev cuam tshuam thoob ntiaj teb cov khoom lag luam cuam tshuam (kev xa khoom qeeb, cov khoom siv tsis txaus, cov nqi hluav taws xob) tuaj yeem ncua sij hawm ua txhuas nrog kev ceeb toom me ntsis.
Cov neeg muab khoom siv tuaj yeem hais "cov khoom lag luam muaj" raws li cov khoom lag luam theoretical; Kev lees paub lub cev yog qhov tseem ceeb.
Rau ntau-ntau txoj haujlwm, paub meej tias tus neeg xa khoom tuaj yeem xa txhua qhov ntau los ntawm tib lub tshav kub kom ntseeg tau tias muaj kev sib xws.
Tswv yim npaj:Rau ib qhov project nrog rau hnub ua tiav tas, ua haujlwm rov qab los ntawm koj hnub xa khoom xav tau los teem sijhawm yuav khoom hnub kawg. Ntxiv 20-25% ncua sij hawm tsis rau cov khoom tshwj xeeb. Kev lees paub hauv kev sau ntawv tias tus neeg muag khoom lub sij hawm xa tuaj yog kev cog lus ruaj khov, tsis yog kev kwv yees.
Lead Time Benchmarks los ntawm cov khoom
Table 5 muab kev lag luam benchmark lead lub sij hawm rau hom stainless hlau thiab npib tsib xee alloy khoom cov ntaub ntawv. Siv cov kab no kom tsim nyog rau cov neeg siv khoom cog lus thiab txheeb xyuas cov lus luv luv uas tsis muaj tseeb.
Table 5: Lead Time Benchmarks - Stainless Hlau & Nickel Alloy Khoom (2024-2025)
|
Khoom |
Hom Lub Sijhawm Ua Haujlwm Hauv Tebchaws |
Hom Lub Sijhawm Ntshuam Lead |
Kev Npaj Sau Ntawv |
|
SS Sheet/Coil (304/316), ex- Tshuag |
1-2 lub lis piam |
2-4 lub lis piam |
Cov chaw pabcuam feem ntau muaj cov ntsuas ntsuas; paub meej coil vs. slit sheet |
|
SS Phaj (kev cai thickness, txiav - mus rau -loj) |
3-6 lub lis piam |
6-10 hnub |
Kev cai ntev thiab dav yuav tsum tau zeb lossis chaw pabcuam txiav |
|
Seamless Yeeb Nkab (tus qauv qib, ex- Tshuag) |
2-4 lub lis piam |
4-8 lub lis piam |
Txheeb xyuas lub sijhawm, qib, thiab qhov ua tiav tiav ua ntej ua tiav |
|
Seamless Yeeb Nkab (tsis yog -tus qauv OD/WT) |
8-16 lub lis piam |
12-20 hnub |
Mill ntau lawm khiav yuav tsum tau; npaj 3-4 lub hlis rau cov phiaj xwm tseem ceeb |
|
Nickel Alloy Phaj (Alloy 625 / C-276) |
6-12 lub lis piam |
10-18 hnub |
Limited zeb ntau lawm muaj peev xwm; ib leeg - qhov kev pheej hmoo - tsim nyog 2+ cov neeg xa khoom |
|
Nickel Alloy Seamless Tube |
10-16 hnub |
14-24 hnub |
Cov khoom siv ntev ntev; xaj kom ntxov, tshwj xeeb tshaj yog rau ASME Tshooj VIII daim ntawv thov |
|
Forgings / Custom Machined Parts |
8-20 hnub |
14-28 hnub |
Nyob ntawm raw khoom, forge peev, thiab machining queue |
|
Flanges & Fittings (tus qauv) |
2-5 lub lis piam |
4-8 lub lis piam |
Tshawb xyuas NPS, chav kawm siab, thiab qib khoom siv tiv thaiv qhov project BOM |
Lub sij hawm ua cov hmoov txhuas yog cov cim qhia raws li North American thiab European kev ua lag luam. Lub sij hawm ua cov hmoov txhuas sib txawv raws li tus neeg xa khoom, qib, qhov ntau, thiab kev lag luam thoob ntiaj teb. Ntshuam sij hawm muaj xws li dej hiav txwv freight (feem ntau 3-6 lub lis piam ex-Asia); ntxiv sijhawm kev lis kev cai clearance. Nco ntsoov xyuas cov sij hawm ua khoom tam sim no thaum lub sij hawm txiav txim.
Supply Chain Risk Cov lus nug nug
Koj puas tsim cov khoom no, lossis koj puas yog tus xa khoom / tus lag luam? (Intermediaries ntxiv cov sij hawm txhuas thiab tus nqi pheej hmoo.)
Muaj pes tsawg lub mills thoob ntiaj teb tuaj yeem muab daim ntawv thiab qib no?
Koj puas tuav cov khoom lag luam tawm tswv yim (tsis muaj Tshuag) rau cov khoom no, thiab nws yuav ua li cas ntxiv?
Koj nyob ntawm -lub sij hawm tus nqi xa khoom li cas rau 12 lub hlis dhau los?
Yog tias muaj kev ncua sijhawm, koj txoj kev nce qib thiab txoj cai them nyiaj yog dab tsi?
Nqe lus nug 5:Cov alloy no puas muaj Export Control Classifications lossis txwv End-Siv?
Feem ntau cov qauv stainless hlau qib yog kev lag luam ywj pheej thoob ntiaj teb. Txawm li cas los xij, qee qhov kev ua tau zoo ntawm cov nickel alloys, cov hmoov tshwj xeeb, thiab cov hlau alloys npaj rau kev siv dav hlau los yog kev tiv thaiv yuav raug xa mus rau kev tswj hwm cov cai uas yuav tsum muaj ntawv tso cai, kawg - daim ntawv pov thawj neeg siv, lossis lwm yam kev tso cai ua ntej lawv tuaj yeem hla ciam teb thoob ntiaj teb.
Vim li cas lo lus nug no tiv thaiv ob tus neeg yuav khoom thiab tus muag khoom
Kev ua txhaum cai lij choj tswj kev xa tawm tuaj yeem ua rau raug foob txhaum cai, raug nplua nyiaj pej xeem txog li USD 1 lab rau ib qho kev ua txhaum cai (USA EAR), thiab tsis lees txais kev xa tawm mus tas li.
Cov khoom siv hlau hloov mus rau qhov txwv tsis pub kawg - siv lossis xaus - cov neeg siv tuaj yeem tsim kev lav phib xaub rau ob tus neeg xa tawm thiab tus neeg xa khoom.
Qee cov alloys raug tswj xyuas vim lawv lub luag haujlwm hauv riam phom nuclear, riam phom tshuaj lom neeg, lossis cov cuab yeej siv riam phom siab heev - tsis yog vim tus neeg yuav khoom.
Lus Ceeb Toom:Export tswj kev lav phib xaub yog nruj thiab tsis xav tau kev ua txhaum cai nyob rau hauv feem ntau txoj cai lij choj. "Kuv tsis paub" tsis tshua muaj kev tiv thaiv. Cov neeg yuav khoom yuav tsum ua raws li kev mob siab rau ntawm lawv cov neeg muag khoom 'kev ua raws cai export.
Export Control Ceev Reference rau Alloy khoom
Table 6 piav qhia txog cov txheej txheem tswj kev xa tawm rau cov khoom siv stainless hlau thiab npib tsib xee alloy feem ntau raws li US (EAR) thiab EU dual- siv cov cai.
Table 6: Export Control Classification - Stainless hlau & Nickel Alloy khoom
|
Alloy / Yam khoom |
US Classification (EAR) |
EU Classification |
Yuav tsum ua qhov tseem ceeb |
|
Standard Stainless hlau (304, 316) |
EAR99 (USA) |
Tsis yog dual-siv (EU) |
Tsis muaj daim ntawv tso cai xa tawm rau feem ntau cov chaw; txheeb xyuas cov teb chaws raug nplua |
|
High -Tub npib tsib xee Alloys (718, 625) |
EAR99 los yog ECCN 1C002 |
ECCN EU annex IV ua tau |
Txheeb xyuas qhov kawg-siv: aerospace/defense applications tuaj yeem ua rau qhov yuav tsum tau muaj daim ntawv tso cai |
|
Nickel Alloy hmoov (ntxiv mfg.) |
ECCN 1C002 / 1C239 |
Dual{0}}siv txoj cai EU 2021/821 |
Tswj nruj; kawg- daim ntawv pov thawj neeg siv (EUC) feem ntau xav tau |
|
Corrosion{0}}Resistant Alloys (C-276, 22) |
EAR99 los yog ECCN 1C002.b |
Ua tau dual- siv |
Cov nroj tsuag tshuaj / riam phom ntawm kev puas tsuaj loj kawg - siv kev tshuaj ntsuam yuav tsum tau |
|
Tshwj xeeb Tube rau Nuclear |
ECCN 2B350 (ua tau) |
Annex I, Cat. 2 (EU) |
Tag nrho qhov kawg - siv cov lus tshaj tawm yuav tsum tau; IAEA kev tiv thaiv tuaj yeem siv tau |
|
Hlau & Hlau Scrap (recycled input) |
EAR99 feem ntau |
Nws txawv ntawm qhov muaj pes tsawg leeg |
Txheeb xyuas cov khoom seem; REACH thiab RoHS ua raws yog nkag mus rau EU |
EAR=Export Administration Regulations (US Department of Commerce, Bureau of Industry thiab Security). ECCN=Export Control Classification Number. EAR99=cov khoom uas tsis muaj npe tshwj xeeb hauv daim ntawv teev npe ECCN; feem ntau tsis tas yuav muaj ntawv tso cai tshwj tsis yog rau qhov chaw uas tsis muaj kev txwv. EU kev faib tawm ua raws li Txoj Cai (EU) 2021/821. Cov lus no yog rau kev taw qhia dav dav nkaus xwb - sab laj nrog tus kws lij choj uas muaj ntawv tso cai ua raws li tus kws lij choj lossis tus neeg lis kev lis kev cai rau kev txiav txim siab txog cov khoom tshwj xeeb.
Kev Ua Raws Cai Ua Ntej Txhua Yam Kev Txiav Txim Siab Thoob Ntiaj Teb
Paub meej tias HS code thiab ECCN kev faib tawm rau cov alloy tshwj xeeb thiab cov khoom siv nrog koj tus neeg muag khoom.
Tshuaj ntsuam tus neeg yuav khoom, kawg -tus neeg siv, thiab tus neeg xa khoom tawm tsam US OFAC, BIS Entity List, EU consolidated sanction list, thiab UN sanctions.
Tau txais qhov kawg -User Certificate (EUC) rau txhua yam hlau uas muaj peev xwm dual- siv kev faib tawm.
Paub meej tias txoj kev Incoterm thiab kev thauj khoom tsis xa cov khoom siv los ntawm lub tebchaws raug nplua (txawm tias nyob hauv kev thauj mus los).
Khaws tag nrho cov ntaub ntawv ua raws cai rau yam tsawg kawg ntawm tsib xyoos (USA) lossis raws li koj qhov kev txiav txim.
Siv Table 7 kom tau qhab nia rau yav tom ntej lossis cov khoom lag luam uas twb muaj lawm ntawm tsib lub ntsiab lus tseem ceeb hauv phau ntawv qhia no. Tus neeg muag khoom tau qhab nia qis dua 70 ntawm 100 yuav tsum tau txais kev tsim nyog ntxiv lossis suav tias tsis yog -xav tau rau cov ntawv thov kev tswj hwm.
Table 7: Alloy Supplier Evaluation Scorecard (Tag nrho: 100 Points)
|
Kev ntsuas ntsuas |
Tus neeg muab khoom teb |
Cov qhab nia Max |
Kev taw qhia |
|
MTC muab rau txhua qhov khoom xa tuaj (kub- tshwj xeeb) |
Yog / Tsis yog |
20 |
Tsis yog- sib tham tau rau cov ntawv thov kev tswj hwm; tsis siv neeg disqualifier yog "Tsis yog" |
|
EN 10204 3.1 lossis 3.2 ntawv pov thawj muaj |
Yog / Tsis yog |
15 |
Yuav tsum muaj rau EU cov cuab yeej siv siab; nug rau daim ntawv pov thawj |
|
ISO 9001: 2015 lossis PED-ua raws QMS tau lees paub |
Yog / Tsis yog |
15 |
Thib peb-txoj kev tshawb xyuas qhov zoo ntawm tog neeg txo cov neeg xa khoom txaus ntshai heev |
|
PMI (Positive Material Identification) kuaj muaj |
Yog / Tsis yog |
10 |
XRF lossis OES kuaj pom zoo rau qib alloy ntawm kev xa khoom; tseem ceeb heev rau nickel alloys |
|
Tag nrho cov cua sov / ntau traceability tswj thiab muaj |
Yog / Tsis yog |
15 |
Qhov tseem ceeb rau txhua qhov haujlwm uas raug tshuaj xyuas lossis kev tshuaj xyuas |
|
Lub sijhawm ua haujlwm cog lus hauv kev sau ntawv (daim ntawv cog lus / PO) |
Yog / Tsis yog |
10 |
Cov lus cog tseg tsis raug cai; insist nyob rau hauv kev sau ntawv ua ntej kev pom zoo |
|
Export ua raws li kev soj ntsuam cov txheej txheem sau tseg |
Yog / Tsis yog |
10 |
Paub meej tias tus neeg muag khoom yuav tsis nthuav tawm cov neeg yuav khoom rau kev ua txhaum cai |
|
Cov ntaub ntawv los ntawm tib lub lag luam / daim ntawv thov muaj |
Yog / Tsis yog |
5 |
Kev paub tseeb hauv koj qhov haujlwm txo qis kev pheej hmoo tsim nyog |
Cov qhab nia 90–100: Cov neeg muag khoom nyiam. Cov qhab nia 70–89: Txais tau nrog cov xwm txheej; cov ntaub ntawv qhov khoob thiab teeb tsa lub sijhawm kho kom raug. Cov qhab nia qis dua 70: Tsis yog- nyiam; xav kom tus neeg muag khoom txoj kev npaj tsim kho lossis tsis tsim nyog rau kev nyab xeeb- daim ntawv thov tseem ceeb.
Cov lus nug nquag nug (FAQ)
Table 8 teb cov lus nug ntau tshaj plaws los ntawm cov kws tshaj lij kev muag khoom, engineers, thiab cov thawj tswj xyuas qhov project nrhiav cov hlau tsis muaj hlau thiab npib tsib xee alloys.
Table 8: FAQ - Alloy Procurement Due Diligence
|
Cov lus nug nquag |
Cov Lus Teb |
|
Daim ntawv pov thawj EN 10204 3.1 vs . 3.2 yog dab tsi? |
Daim ntawv pov thawj 3.1 yog muab los ntawm lub zeb tus kws tshuaj ntsuam xyuas. Daim ntawv pov thawj 3.2 yuav tsum muaj tus neeg sab nraud thib peb-tus neeg soj ntsuam (piv txwv li, TÜV, Bureau Veritas) los ua pov thawj thiab co- kos npe rau qhov kev xeem. Cov cuab yeej siv siab hauv EU feem ntau xav tau 3.1 yam tsawg kawg nkaus; nuclear thiab kev nyab xeeb- daim ntawv thov tseem ceeb xav tau 3.2. |
|
Kuv puas tuaj yeem siv ASTM A240 cov khoom siv ntawm lub nkoj EN 13445? |
Qee zaum, nrog kev pom zoo. EN 13445 Annex B tso cai tsis pom zoo -EN cov ntaub ntawv yog tias tus neeg yuav khoom tuaj yeem ua kom pom qhov sib npaug. Tau txais ib qho kev ntsuam xyuas los ntawm Lub Tsev Teev Ntuj Ceeb Toom. Nco ntsoov paub meej nrog koj lub siab lub nkoj fabricator. |
|
Kev kuaj PMI yog dab tsi thiab thaum twg kuv xav tau nws? |
Kev txheeb xyuas cov khoom zoo (PMI) siv XRF lossis OES cov cuab yeej los xyuas qhov muaj pes tsawg leeg ntawm cov khoom siv hlau uas tau txais. Nws raug pom zoo rau tag nrho cov nickel alloy xa khoom thiab yuav tsum tau ua hauv ntau cov roj & roj, nuclear, thiab kev siv tshuaj. |
|
Kuv yuav tsum khaws MTCs ntev npaum li cas? |
Khaws rau lub neej ntawm cov cuab yeej siv ntxiv rau cov cai ntawm kev txwv (feem ntau 10-30 xyoo rau cov cuab yeej siv siab). Cov neeg ua haujlwm roj & roj feem ntau xav tau 30 xyoo tuav. Tham nrog koj pab neeg raug cai lossis ua raws cai. |
|
Kuv tus neeg muag khoom tsis tuaj yeem muab cov cua sov- tshwj xeeb MTCs. Qhov ntawd puas txais tau? |
Rau kev siv cov khoom siv, daim ntawv pov thawj batch tuaj yeem ua tau. Rau txhua qhov kev ntxhov siab, kev nyab xeeb- tseem ceeb, lossis kev tswj hwm daim ntawv thov, cua sov- tshwj xeeb MTCs tsis yog- sib tham. Tsis kam lees qhov kev txiav txim lossis yuav tsum tau rov- kuaj ntawm lub chaw kuaj mob uas tau lees paub. |
|
Cov chij liab twg qhia txog kev dag MTC? |
Saib rau: fonts tsis sib xws lossis formatting, cov xov tooj cua sov uas tsis phim cov khoom cim, cov tshuaj muaj pes tsawg leeg uas zoo sib xws spec yam tsawg kawg nkaus / qhov siab tshaj plaws (tsis zoo li txheeb cais), cov ntawv zeb ploj lossis cov ntawv tso cai kos npe, thiab MTCs uas tsis tuaj yeem txheeb xyuas los ntawm kev sib cuag ntawm zeb. |
Xaus
Hauv kev yuav khoom alloy, tus nqi ntawm kev nug cov lus nug zoo yog xoom. Tus nqi tsis nug lawv tuaj yeem ua rau muaj kev puas tsuaj loj. Tsib nqe lus nug hauv phau ntawv qhia no tsim qhov tsawg kawg ntawm kev mob siab rau lub hauv paus uas txhua tus neeg yuav khoom yuav tsum tau thov ua ntej muab qhov kev txiav txim rau cov khoom siv stainless hlau lossis npib tsib xee alloy:
Nqe Lus Nug 1 - MTC: Xyuas kom meej tias cov khoom siv tau ntsuas thiab sau tseg.
Nqe lus nug 2 - Cov qauv: Ua kom cov khoom ua tau raws li koj qhov kev xav tau ntawm engineering thiab kev tswj hwm.
Nqe Lus Nug 3 - Traceability: Muab cov kev soj ntsuam uas xav tau rau kev ua raws cai, rov qab, thiab kev tsis sib haum xeeb.
Nqe Lus Nug 4 - Lub Sijhawm Ua Haujlwm: Tiv thaiv koj lub sijhawm ua haujlwm los ntawm cov khoom lag luam xav tsis thoob.
Nqe Lus Nug 5 - Kev Ua Raws Cai: Khaws koj lub koom haum nyob rau sab xis ntawm txoj cai tswj kev xa tawm.
Ib tus neeg muag khoom uas teb tag nrho tsib nqe lus nug kom meej, sau ntawv, thiab tsis muaj hesitation yog tus neeg muag khoom tsim nyog ua lag luam nrog. Ib tug uas deflects, qeeb, los yog muab cov lus teb tsis tiav yog qhia koj ib yam tseem ceeb - ua tib zoo mloog.
Daim Ntawv Xeem Kawg:Ua ntej tshaj tawm ib qho kev txiav txim rau cov khoom siv alloy: (1) MTC tau lees paub, (2) tus qauv thiab qib tau teev nyob rau hauv tag nrho, (3) cov khoom siv hluav taws xob ntsuas kub tau teev tseg, (4) lub sijhawm ua haujlwm tau lees paub hauv kev sau ntawv, (5) kev tswj xyuas kev faib tawm. Tsib nqe lus nug. Ib qho kev txiav txim siab.
