Tsawg Kub Carbon Steel A333 Qib 6 Yeeb Nkab
Dec 04, 2025
ASTM A333 Gr 6 Carbon Steel Pipe lus piav qhia
A333 Gr.6yog ASTM - ua raws qis - cov kav dej kub tau tsim tshwj xeeb raucryogenic siab hlab ntsha pipelinesthiabcryogenic kub exchanger tubingua haujlwm hauv-45℃rau -195 degree.
A333 Gr.6 seamless steel kavua lub luag haujlwm tseem ceeb hauv ntau lub sectors, tshwj xeeb tshaj yog nyob rau hauvpetrochemical kev lag luam, qhov twg lawv tau siv dav hauv:
Cov txheej txheem tsim khoom rauethylene, polypropylene, hluavtaws ammonia, thiab LPG.
Tsis tas li ntawd, cov kav dej no yog qhov tseem ceeb hauv:
Cryogenic khoom tsim khoom
Ultra-tsawg- qhov chaw cia txias txias
Cov kav dej thaujultra-cryogenic liquefied gases.
A333 GR6 LTCS yeeb nkab Specification
| Cov qauv | ASTM, ASME thiab API |
| Khoom siv tes ua | Cold rolled thiab Cold drawn |
| Hom | ERW / Seamless / Fabricated / Welded / CDW |
| Loj | 1/2 "NB to 36" NB |
| Daim ntawv | Hloov, Hydraulic thiab lwm yam |
| Thickness | 3-12 hli |
| Xaus | Beveled kawg, Plain End, Treaded |
| Teem caij | Teem caij 40, 80, 160, XS, XXS |
| Kev kuaj ntxiv | NACE TM0177, NACE MR0175, NACE TM0284, SSC TEST, HIC TEST, H2 SERVICE, IBR, thiab lwm yam. |
| Ua siab ntev | Cov yeeb nkab txias txias: +/- 0.1mm Cov yeeb nkab txias txias: +/- 0.05mm |
| Ntev | Yam tsawg kawg 3 meters, siab tshaj 18 meters |
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Tshwj xeeb hauv |
Loj Dia ASTM A333 Qib 6 Yeeb Nkab |
SA 333 Gr 6 Cov Khoom Siv Tshuaj thiab Lub Cev Khoom
| A333 Gr.6 | C | Mn | P | S | Si | Ni |
| 0.3 | 0.29-1.06 | 0.025 | 0.025 | Ntau dua lossis sib npaug li 0.10 | – |
LTCS ASTM A333 Gr 6 Pipes Mechanical Analysis
| Qib | Yield zog, min, psi (MPa) | Tensile zog, min, psi (MPa) | Elongation (%) |
| A333 Gr.6 | 35 000 (240) | 60 000 (415) | 30 feeb |
ASME SA333 Qib 6 Cov yeeb nkab sib npaug
| Qib | Yeeb | Tube | Fittings | Flanges | Bar | Forgings | EN | Khoom siv |
|---|---|---|---|---|---|---|---|---|
| Tsawg Temp CS Gr. 6 | A333 GR . 6 | A333 GR . 6 | A420 WPL6 | A350 LF2 | A516 | A350 LF2 | TS EN 10216-4 | P265 NL |
ASTM A333 Gr.6 vs Gr.1 Cov lus sib piv
| Parameter | Gr.6 | Gr.1 |
|---|---|---|
| Core alloy | Ni-Enhanced(Ni: 3.2–3.6%) | C-Mn Base Steel(Ni: 0%) |
| Qhov kub thiab txias | -45 degree(Min. Design Temp) | -29 degree(Min. Design Temp) |
| Impact Test Temp | -45 degree(Charpy V-ntu) | -29 degree(Charpy V-ntu) |
| Impact Energy Req. | Ntau dua lossis sib npaug rau 18J (Ib Leeg) / Ntau dua lossis sib npaug rau 20J (Avg) | Ntau dua lossis sib npaug rau 18J (Ib Leeg) / Ntau dua lossis sib npaug rau 20J (Avg) |
| Ductile -Brittle Transition Temp (DBTT) | ≈-70 degree | ≈-20 degree |
| Cryo Toughness Mech. | Ni inhibits grain ciam teb embrittlement, stabilizes austenite | Cia siab rau cov nplej zoo + kev tswj hwm purity |
| Daim ntawv thov | • LNG Secondary Pipes (-45 ~ -100 degree) • Cov cuab yeej ua kua Ammonia |
• Dej Chilled Systems (-20 degree) • Arctic Roj/Gas Pipelines |
| Vuam txheej txheem | Ni-raws li Filler (piv txwv li, ENiCrFe-3) + Preheat 150 degree | Carbon Steel Filler (piv txwv li, E7018) + Preheat 95 degree |
| Tus nqi siv | ≈1.8 × Gr.1(Ni- alloy premium) | Tus nqi pib |
| Failure Risk | Accelerated oxidation >50 degree | Ceev embrittlement<-30°C |
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