ASTM A333 Gr.3 Seamless Tsawg -Tub Kub Hlau Yeeb Nkab
Dec 05, 2025
A333 Gr.3 Pipe yog dab tsi
A333 Gr.3 yog cov khoom siv seamless steel yeeb nkab tshwj xeeb tsim rau qis- qhov kub thiab txias ib puag ncig hauv ASTM A333 tus qauv, suav nrog 3.5 feem pua nickel series ntawm qis-kub alloy steels. Nws cov yam ntxwv tseem ceeb yog qhov qis -carbon, siab -nickel muaj pes tsawg leeg tsim. Los ntawm kev tswj hwm cov ntsiab lus ntawm cov pa roj carbon monoxide (0.19 feem pua siab tshaj) thiab ntxiv 3.18-3.82 feem pua nickel, nws ua kom cov hlau tsis tshua muaj - qhov kub thiab txias, ua kom nws tswj cov khoom ruaj khov ntawm qhov kub ntawm 100 ° C thiab tiv thaiv kom tsis txhob kub kub.
Tshuaj muaj pes tsawg leeg
| Element | Qib 3 |
|---|---|
| Carbon, max | 0.19 |
| Silicon | 0.18-0.37 |
| Manganese | 0.31-0.64 |
| Phosphorus, max | 0.025 |
| Sulfur, max | 0.025 |
| Nickel | 3.18-3.82 |
Mechanical Properties
| Khoom | Tus nqi |
|---|---|
| Lub zog tensile | 450 MPa (min) |
| Yield zog | 240 MPa (min) |
| Elongation | 15 feem pua (min) |
| Impact test kub | 101 ° C (tshem tawm 150 ° F) |
Kev cuam tshuam lub zog ua raws li A333 cov lus, piv txwv li 18 J nruab nrab rau tag nrho - qhov loj me ntawm qhov rho tawm 101 deg C.
Cov khoom sib npaug
Cov khoom sib npaug ntawm A333 Gr.3 yog 16MnDG, uas ua raws li GB / T 18984 tus qauv. Cov khoom no yog tsim tshwj xeeb rau qhov qis- qhov kub thiab txias thiab feem ntau yog siv rau hauv cov hlab ntsha siab thiab cov kav dej kub exchanger.
A333 vs API 5L
| Cov khoom sib piv | ASTM A333 Cov khoom lag luam | API 5L |
|---|---|---|
| Hom qauv | Material standard (muaj pes tsawg leeg thiab mechanical zog) | Cov khoom lag luam (qhov ntev, tsim khoom, tshuaj xyuas cov kab yeeb nkab) |
| Lub hom phiaj tseem ceeb | Tsawg- qhov kub thiab txias | Kev thauj cov roj, roj, thiab lwm yam kua |
| Cov ntsiab lus tseem ceeb | Tsawg-kub toughness | Lub zog, toughness, weldability, corrosion kuj |
| Yam khoom siv | A333 Gr.3 (kwv yees 3.5 feem pua nickel), Gr.6, Gr.8 | X42, X52, X70 (carbon-manganese steels) |
| Kev tsim khoom | Yuav tsum normalizing los ua kom cov nplej | Kub dov, txias dov, kho cua sov |
Daim ntawv thov
LNG kev lag luam: piping hauv LNG terminals thiab qis -kub tsheb thauj mus los. Cryogenic cov khoom siv tshuaj: cov kav dej sib pauv rau cov reactors thiab condensers hauv ethylene thiab propylene ntau lawm. Roj thiab roj rho tawm: platform piping nyob rau hauv cov cheeb tsam txias, nrog qaug zog tiv thaiv ncua kev pab cuam lub neej. Gr.3 kuj tau teev tseg rau kev pab cuam mus txog qhov kub ntawm 100 deg C qhov twg Qib 6 tsis tuaj yeem muab qhov yuav tsum tau muaj zog.
Cov lus nug nquag
Q: A333 Gr.3 yeeb nkab yog dab tsi?A: A 3.5 feem pua nickel qis-kub steel yeeb nkab rau ASTM A333 rau kev pabcuam qis txog li 100 deg C.
Q: Cov khoom sib npaug yog dab tsi?A: 16MnDG ib GB / T 18984.
Q: Lub zog tensile ntawm Gr.3 yog dab tsi?A: 450 MPa yam tsawg kawg nkaus, nrog 240 MPa yam tsawg yield zog.
Q: Dab tsi yog qhov ntsuas qhov ntsuas kub?A: Hais txog rho tawm 101 deg C (muab 150 deg F).
Q: Qhov txawv ntawm Gr.3 thiab Gr.6 yog dab tsi? A>Gr.3 siv 3.5 feem pua nickel rau toughness txog rho tawm 100 deg C; Gr.6 yog npib tsib xee- pub dawb thiab txwv tsis pub txog 45 deg C.
Q: Gr.3 siv qhov twg?A: LNG terminals, cryogenic tshuaj nroj tsuag, thiab txias- thaj av roj thiab roj platforms.
Xav tau A333 Gr.3 yeeb nkab rau koj qhov haujlwm qis - kub? Tiv tauj peb nrog koj qhov loj me thiab qhov cuam tshuam -qhov yuav tsum tau ua rau kev hais lus.
