Cov ntsiab lus ceev
JIS G3457 yog Japanese Industrial Standard uas qhia txog cov cai raucarbon steel kav npaj rau siab -kev pab kub. Lawv feem ntau siv rau hauv cov kav dej rau cov chaw tsim hluav taws xob, cov chaw tsim khoom, thiab cov chaw ua haujlwm uas muaj qhov kub thiab txias.
Feem ntau thiab cov qib sawv cev raws li tus qauv no yogTIAB SA 410.
1. JIS G3457 yog dab tsi?
JIS G3457 yog tus qauv rau"Carbon Steel Pipes rau High-Tsev Kev Pabcuam". Cov kav dej uas siv los ntawm tus qauv no yog seamless thiab tsim los tiv thaiv qhov kub ntawm qhov kub. Lawv feem ntau tsis yog siv rau qis -kub lossis kev siv cov qauv.
2. Cov Qib tseem ceeb thiab lawv cov tshuaj muaj pes tsawg leeg
Tus qauv txhais tau ntau qib, sib txawv los ntawm lawv lub zog tensile thiab tshuaj muaj pes tsawg leeg. Qhov "STPT" ua ntej yog rauSyooj yimTube,Pipe, uaTemperature.
| Qib | Chemical Composition (%) (Max) | |||||
|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cu | |
| TIAB SA 370 | 0.18 | 0.25 | 0.30-0.60 | 0.035 | 0.035 | 0.20 |
| TIAB SA 410 | 0.21 | 0.25 | 0.30-0.60 | 0.035 | 0.035 | 0.20 |
| TIAB SA 480 | 0.27 | 0.25 | 0.30-0.90 | 0.035 | 0.035 | 0.20 |
Nco tseg:STPT 410 yog qib siv dav tshaj plaws, muab qhov sib npaug zoo ntawm lub zog, weldability, thiab siab - kub ua haujlwm.
3. Mechanical Properties
Cov khoom siv kho tshuab yog qhov sib txawv tseem ceeb ntawm cov qib.
| Qib | Tensile zog (MPa) Min. | Yield zog (MPa) Min. | Elongation (%) Min. |
|---|---|---|---|
| TIAB SA 370 | 372 (37.2 kgf / hli) | 216 (21.6 kgf/mm²) | 30 |
| TIAB SA 410 | 412 (41.2 kgf / hli) | 245 (24.5 kgf/mm²) | 25 |
| TIAB SA 480 | 480 (48.0 kgf / hli) | 275 (27.5 kgf/mm²) | 20 |
4. Cov txheej txheem tsim khoom thiab hom
Cov kav dej ua raws li JIS G3457 yogseamless, txhais tau tias lawv yog manufactured tsis muaj welded seam. Qhov no muab lub zog sib xws nyob ib puag ncig, uas yog qhov tseem ceeb rau kev siv siab -siab thiab siab - qhov kub thiab txias.
Tus qauv qhia ob hom raws li kev tsim khoom thiab kev kho cua sov tom qab:
Hom 1:Ua los ntawm kub sib sau tsis muaj kev kho cua sov tom qab.
Hom 2:Ua los ntawm kub sib sau thiab tom qab annealed los yog normalized thiab tempered.
5. Kev siv ntau
JIS G3457 cov kav dej yog siv rau hauv cov kev pabcuam uas qhov kub siab tshaj qhov txwv ntawm cov qauv carbon steel kav (xws li JIS G3454 / ASTM A106). Cov ntawv thov ib txwm muaj xws li:
Boiler Tubes thiab Superheatershauv thermal fais fab nroj tsuag.
Txheej Txheem Pipingnyob rau hauv petroleum refineries thiab chemical nroj tsuag.
Chav Kabrau cov txheej txheem kev lag luam.
Thaum tshav kub kub Exchanger Tubes(hauv qee qhov kev pabcuam kub siab -).
6. Sib piv nrog Lwm Cov Qauv Loj
Nws yog qhov ntau heev los sib piv JIS G3457 nrog nws qhov sib npaug thoob ntiaj teb, tshwj xeeb tshaj yog covASTM A106 1standard los ntawm teb chaws USA.
| Feature | JIS G3457 (Nyiv) | ASTM A106 (Tebchaws Asmeskas) |
|---|---|---|
| Standard Title | Carbon Steel Pipes rau siab -Tsev Kev Pabcuam | Seamless Carbon Steel Yeeb Nkab rau siab -Kev Pabcuam Kub |
| Hom Qib | TIAB SA 410 | Qib B |
| Tensile zog | 412 MPa Min. | 415 MPa Min. |
| Yield zog | 245 MPa Min. | 240 MPa Min. |
| Kev sib xyaw | Muaj kev txwv me ntsis ntawm Si thiab Mn ntau yam. | Qhov sib txawv me ntsis rau Mn thiab tso cai rau ntau dua Cu. |
| Qhov txawv tseem ceeb | Feem ntau suav hais tias muaj kev tswj nruj dua ntawm cov tshuaj muaj pes tsawg leeg. | Lub ntiaj teb no benchmark, dav txais thiab siv. |
Xaus:STPT 410 (JIS G3457) thiab A106 Qib B yogzoo interchangeablerau feem ntau siv tau. Qhov kev xaiv feem ntau los ntawm qhov project specifications, lub regional muaj, thiab cov neeg siv khoom nyiam.
7. Kev txiav txim siab tseem ceeb
Hydrostatic Test:Txhua cov yeeb nkab yuav tsum tau kuaj xyuas hydrostatic, tshwj tsis yog hloov los ntawm kev ntsuas hluav taws xob tsis yog - puas tsuaj.
Tsis yog-Kev kuaj kev puas tsuaj:Kev ntsuas ultrasonic lossis eddy tam sim no tuaj yeem siv los ua lwm txoj hauv kev kuaj hydrostatic, raws li kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom.
Marking:Cov kav dej yog cim nrog cov chaw tsim khoom lub npe lossis cov cim lag luam, qib (piv txwv li, STPT410), qhov loj me, cov xov tooj cua sov, thiab tus qauv "JIS G3457".
Hauv cov ntsiab lus,JIS G3457 STPT 410yog ib lub siab -zoo, seamless carbon steel yeeb nkab tshwj xeeb engineered rau kev nyab xeeb thiab txhim khu kev qha nyob rau hauv siab -kub industrial piping systems.
