Yog tias koj tab tom yuav cov yeeb nkab steel hlau lossis lub raj rau cov khoom siv hluav taws xob, khoom noj khoom haus, cov khoom siv tshuaj, boilers, siab piping, los yog architectural tej yaam num, tej zaum koj yuav tau hla cov qauv xws li ASTM A312, ASTM A269, ASTM A213, ASTM A249, ASTM A268, thiab ASTM 4.
Txawm hais tias tag nrho cov qauv no suav nrog cov kav hlau tsis muaj hlau lossis cov kav dej, lawv tau tsim los rau kev siv sib txawv kiag li. Xaiv qhov kev qhia tsis raug tuaj yeem ua rau cov nqi tsis tsim nyog, kev tshuaj ntsuam xyuas tsis raug, txo lub neej lossis txawm tias qhov project qeeb.
ASTM A312 Stainless Hlau Industrial Pipe yog dab tsi?
ASTM A312 yog ib qho kev qhia tshwj xeeb rau austenitic stainless hlau tubing - uas suav nrog seamless, welded, thiab txias ua haujlwm ntau yam - npaj rau kev pabcuam kub kub thiab kev siv dav hauv qhov chaw corrosive. Cov qib pib muaj xws li TP304, TP304L, TP316 thiab TP316L, ncua qhov ntau thiab tsawg ntawm 1/8 nti mus rau 30 nti.
ASTM A269 tus qauv rau stainless hlau yog dab tsi?
ASTM A269 yog tus qauv kev qhia tshwj xeeb rau austenitic stainless hlau yeeb nkab tsim rau cov ntawv thov uas xav tau kev tiv thaiv corrosion thiab kev pabcuam ntawm qhov kub qis lossis siab. Nws yog tsim tshwj xeeb rau cov qib austenitic thiab muaj nyob rau hauv ob qho tib si seamless thiab welded versions. Cov kev qhia tshwj xeeb npog cov kav dej nrog nominal phab ntsa tuab, thiab qhov loj me feem ntau pib los ntawm ib txoj kab uas hla ntawm 1/8 nti (3.2 hli). Kev kho kom zoo nkauj zoo nkauj (* Bright Annealed*) feem ntau yog siv, haum rau kev ntsuas dav dav, hydraulic systems, txheej txheem ntws thiab lwm yam haujlwm.
Dab tsi yog A213 stainless hlau yeeb nkab rau cua sov exchangers?
ASTM A213 rau Stainless Hlau Heat Exchanger Yeeb Nkab tsim cov kev cai rau seamless ferritic thiab austenitic alloy steel tubing tsim los ua haujlwm ntawm qhov kub thiab txias hauv boilers, superheaters, thiab kub exchangers. Cov qauv no suav nrog ferritic (sib nqus, xws li qib T11, T22 thiab T91) thiab austenitic (tsis yog hlau nplaum, xws li qib TP304, TP316L, TP321 thiab TP347) stainless hlau.
A249 stainless hlau welded yeeb nkab yog dab tsi?
ASTM A249 tsim cov kev qhia tshwj xeeb rau austenitic stainless hlau welded yeeb nkab nrog nominal phab ntsa tuab npaj rau cov khoom siv hluav taws xob hloov chaw ua haujlwm ntawm qhov kub thiab txias, xws li boilers, superheaters, kub exchangers, thiab condensers. Cov qauv no suav nrog ntau qib ntawm austenitic stainless hlau, suav nrog TP304, TP304L, TP316, TP316L thiab TP321. Tom qab vuam thiab ua ntej kev kho cua sov zaum kawg (annealing), cov hlaws hlaws tau dhau los ua cov txheej txheem ua haujlwm txias (flattening lossis leveling) txhawm rau txhim kho cov qauv nplej thiab ua kom muaj zog.
Dab tsi yog A268 stainless hlau yeeb nkab?
ASTM A268 yog tus qauv tshwj xeeb rau ferritic thiab martensitic stainless hlau yeeb nkab -ob leeg seamless thiab welded- npaj rau kev tiv thaiv corrosion thiab kub kub kev pab cuam. Cov qauv no suav nrog cov qib chromium (nickel-dawb) xws li TP410 thiab TP430; Cov hlau nplaum hlau no yog ib qho kev lag luam rau cov hlau tsis muaj austenitic.
Dab tsi yog cov qauv rau A554 stainless hlau?
ASTM A554 yog tus qauv specification rau welded stainless hlau mechanical tubing, npog tshuaj muaj pes tsawg leeg, qhov ntev, thiab cov duab. Siv rau austenitic, ferritic thiab duplex stainless hlau yeeb nkab npaj rau ornamental, structural and exhaust system applications, es tsis yog siv rau hauv cov hlab ntsha hauv siab.
ASTM Stainless hlau Standards
| Txoj cai | Lub npe tag nrho (Scope of application) | Txoj kev tsim khoom | Cov qhab nia | Tej kev siv |
|---|---|---|---|---|
| ASTM A 312 Cov Lus Qhia | Seamless, welded thiab intensively txias-ua hauj lwm austenitic stainless hlau raj | Seamless (SMLS) thiab welded (WLD) | TP304/L, TP316/L, TP321, TP347 | Corrosive ib puag ncig, kev pabcuam kub, kev lag luam petrochemical. |
| ASTM A 213 | Seamless ferritic thiab austenitic alloy steel hlab rau boilers, superheaters thiab tshav kub exchangers | Tsuas yog tsis muaj vuam | TP304, TP316, TP321, T11, T22 | Boilers, superheaters, siab kub exchangers. |
| ASTM A 249 Cov khoom siv | Welded austenitic steel raj rau boilers, superheaters, tshav kub exchangers thiab condensers | Tsuas yog cov tub rog | TP304/L, TP316/L, TP309S, TP310S | Chav condensers, khoom siv hluav taws xob hloov pauv, ua zaub mov. |
| ASTM A 269 Cov khoom siv | General Service Seamless thiab Welded Austenitic Stainless Steel Tubes | Seamless thiab welded | TP 304, TP 316L | Instrumentation, tshuaj dosing, kuaj khoom, hydraulic kab. |
| ASTM A 268 Cov khoom siv | Seamless thiab welded ferritic thiab martensitic stainless hlau raj | Seamless thiab welded | TP410, TP430, TP446, 26-1 (S44627) | Kev pabcuam dav dav uas yuav tsum muaj cov khoom sib nqus lossis kev ntxhov siab corrosion (SCC). |
| ASTM A554 Cov Lus Qhia Tshwj Xeeb | Stainless hlau Welded Mechanical Tubes | Tub rog (feem ntau) | MT304, MT316L, MT430 | Handrails, rooj tog, automotive moldings, kev txhawb nqa. |
Tus qauv ASTM twg yuav tsum cov neeg yuav khoom xaiv?
| Yog tias koj xav tau ... | Cov qauv pom zoo |
|---|---|
| Kev kub siab txheej txheem kav | ASTM A 312 Cov Lus Qhia |
| boiler tubes | ASTM A 213 |
| kub exchanger tubes | ASTM A249 lossis ASTM A213 |
| Precision Instrumentation Tubes | ASTM A 269 Cov khoom siv |
| Thaum tshav kub kub resistant ferritic raj | ASTM A 268 Cov khoom siv |
| Hniav welded raj | ASTM A554 Cov Lus Qhia Tshwj Xeeb |
Yuav Cov Lus Qhia rau Cov Neeg Yuav Khoom Thoob Ntiaj Teb
Thaum sib piv cov quotes, tsis txhob tsom ntsoov rau tus nqi tsev xwb. Kuj ntsuas:
Manufacturing method (welded los yog welded)
Keeb kwm ntawm raw khoom
Txheej txheem annealing
Nto tiav
Dimensional kam rau ua
Kev kuaj tsis muaj kev puas tsuaj (NDT) muaj peev xwm
Cov ntaub ntawv tshuaj xyuas
Ntim rau kev thauj mus los hauv hiav txwv
Lub sij hawm xa tuaj
Export kev
Ib tus neeg muag khoom uas muaj peev xwm soj ntsuam xyuas thiab cov ntaub ntawv tswj tau zoo tuaj yeem txo qhov kev pheej hmoo ntawm kev teeb tsa qeeb, kev tsis lees paub cov khoom, thiab kev lees paub.
Stainless hlau yeeb nkab Supplier (ASTM A312, A269, A213, A249, A268, A554)
GNEE muab cov kav dej stainless hlau thiab cov raj tsim los rau ASTM, ASME, EN, JIS thiab GB cov qauv rau kev lag luam thoob ntiaj teb. Cov qib khoom muaj xws li 304/304L, 316/316L, 321, 310S, 347H, 409, 430, 439, 444, 446, Duplex 2205, Super Duplex 2507 thiab nickel alloy tubes. Tag nrho cov khoom xa tuaj tuaj yeem muab nrog cov ntaub ntawv pov thawj kev xeem raws li EN 10204 3.1; Tsis tas li ntawd, raws li kev thov, kev tshuaj xyuas ntxiv xws li kev kuaj PMI, kev sim hydrostatic, eddy tam sim no kev xeem, crushing thiab flaring xeem, thiab peb-tog soj ntsuam (SGS / BV / TÜV) muaj.
Cov lus nug uas nquag nug
1. Qhov txawv ntawm ASTM A312 thiab ASTM A269 yog dab tsi?
ASTM A312 yog npaj rau cov kav dej siab nrog cov kab uas loj dua thiab cov phab ntsa tuab, thaum ASTM A269 yog tsim los rau cov kav dej precision siv hauv kev ntsuas, kev huv huv, thiab kev siv dav dav uas yuav tsum tau muaj kev tiv thaiv corrosion.
2. Puas yog ASTM A249 zoo dua ASTM A213?
Tsis yog universally zoo dua lwm tus. ASTM A249 welded raj yog kev lag luam ntau dua thiab siv dav hauv cov khoom siv hluav taws xob, thaum ASTM A213 seamless hlab yog nyiam rau boilers ua haujlwm ntawm kev kub siab thiab kub.
3. ASTM A554 yeeb nkab puas tuaj yeem siv rau cov kav dej siab?
No. ASTM A554 npog welded yeeb nkab rau ornamental thiab structural siv thiab tsis yog npaj rau kev siv siab-bearing.
4. Dab tsi yog tus qauv pom zoo rau cov khoom siv hluav taws xob sib hloov?
Rau feem ntau lub plhaub thiab lub raj cua kub exchangers, ASTM A249 welded hlab los yog ASTM A213 seamless hlab yog cov kev xaiv, nyob ntawm seb lub siab tsim, kev khiav hauj lwm kub, thiab qhov project specifications.
