ASTM A333 / A333M Qib 6 - Seamless thiab Welded Steel Yeeb Nkab rau Tsawg- Kev Pabcuam Kub
ASTM A333 Qib 6yog acarbon steel yeeb nkab specificationtsim tshwj xeeb raulow-kub thiab kev pabcuam cryogenic, nrog guaranteed cuam tshuam toughness mus rau-45 ° F (-50 ° F).
Cov yam ntxwv tseem ceeb
| Feature | Kev piav qhia |
|---|---|
| Khoom siv | Zoo-Cov Carbon Steel |
| Kev tsim khoom | Seamless (SMLS)los yogWeldednrog filler hlau |
| Cov khoom tseem ceeb | Guaranteed cuam tshuam toughness ntawm -45℃(-50℃F) |
| Kev siv thawj zaug | Tsawg-tej txheej txheem piping, cryogenic, tub yees |
Kev xav tau tshuaj
| Element | Kev sib xyaw (%) |
|---|---|
| Carbon (C), max | 0.30 |
| Manganese (Mn) | 0.29 - 1.06 |
| Phosphorus (P), max | 0.025 |
| Sulfur (S), max | 0.025 |
| Silicon (Si) | Ntau dua lossis sib npaug li 0.10 |
| Kev Xav Tau Tshwj Xeeb | Ua los ntawm kev ua zoo grain |
| Kev kho cua sov | Normalized, normalized & tempered, los yog annealed |
Mechanical Properties
| Khoom | Kev xav tau |
|---|---|
| Tensile zog, min | 415 MPa (60,000 psi) |
| Yield zog, min | 240 MPa (35,000 psi) |
| Elongation (hauv 50mm), min | Nws txawv nrog phab ntsa thickness |
TSEEM CEEB TSHAJ PLAWS (CEEB TOOM)
| Test Parameter | Kev xav tau |
|---|---|
| Kev ntsuas kub | -45 ° F (-50 ° F) |
| Hom qauv | Charpy V-Notch (CVN) |
| Tsawg zog | 18 J (13 ft·lb)nruab nrab ntawm 3 tus qauv |
| Yam tsawg kawg nkaus tus nqi | 14 J (10 ft·lb) rau ib qho qauv |
| Xeem zaus | Ib txheej rau cua sov, ib phab ntsa thickness |
Cov txheej txheem tsim khoom
Muaj Hom:
| Hom | Kev piav qhia | Cov ntawv thov siv |
|---|---|---|
| Seamless (SMLS) | Pierced thiab extruded | Cov kev pabcuam tseem ceeb, siab dua |
| Welded | Electric fusion welded nrog muab tub lim hlau | General low -kev pabcuam kub |
| Nco tseg: | Tsis tso cai welding tsis tu ncua(tsis txaus toughness) |
Kev kho cua sov (yuav tsum tau):
Li qub(feem ntau)
Normalized thiab Tempered
Annealed
Yuav tsum tau ua kom zoo grain qauv thiab toughness
Temperature Service Range
| Qhov kub thiab txias | Kev tsim nyog |
|---|---|
| -45℃rau +100℃(-50℃F txog +212℃F) | Thawj qhov kev tsim ntau yam |
| Hauv qab -45 degree | Tsis pom zoo yam tsis muaj pov thawj |
| Tshaj 100 degree | Txwv rau 370℃(700℃F) max |
| Ceev faj: | Tsis yog rau cyclic kub kev pab cuam yam tsis muaj qaug zog tsom xam |
Kev Ntsuas & Kev Tshuaj Xyuas
| Kuaj | Kev xav tau |
|---|---|
| Impact Test | Yuav tsum tauntawm -45℃(-50℃F) |
| Hydrostatic Test | Yuav tsum tau rau tag nrho cov yeeb nkab |
| Tensile Test | Ib lub tshav kub, ib phab ntsa thickness |
| Flattening Test | Yuav tsum tau (rau seamless thiab welded) |
| Kev kuaj tsis raug | Kev xaiv rau welded yeeb nkab |
| Kev tshuaj xyuas qhov muag | Yuav tsum tau |
Hydrostatic Test Siab:
ntawv nyeem
P=2St/D (tsawg kawg 1000 psi rau 5+ vib nas this) Qhov twg S=60% ntawm qhov tsawg kawg nkaus yield zog
Cov ntawv thov tseem ceeb
1. Roj & Roj Kev Lag Luam:
LNG (Liquefied Natural Gas) piping(-162 degree)
LPG (Liquefied Petroleum Gas) systems
Cov nroj tsuag tub yeeshauv refineries
Offshore platforms(kev pabcuam huab cua txias)
2. Tshuaj & Petrochemical:
Ethylene thiab propylene piping
Ammonia tub yees systems
Cryogenic txheej txheem piping
Cold box piping
3. Industrial & Commercial:
Industrial tub yees tshuab
Cov khoom siv cua sov ua kom sov
Skid-mounted txheej txheem unitsrau Arctic kev pabcuam
Instrument cua kabnyob rau hauv huab cua txias
4. Kev tsim hluav taws xob:
Ua kua nitrogen / oxygen systems
Gas processing auxiliaries
Kev txiav txim siab tsim
1. Kev Tiv Thaiv Kev Tiv Thaiv Txhaum Cai:
Kev sim cuam tshuamyog tus thawj saib xyuas
Kev ua zoo lisnce pob txha toughness
normalizingrefines grain qauv
Tsis txhob muaj kev ntxhov siabhauv kev tsim
2. Kev xaiv cov khoom siv logic:
ntawv nyeem
Kev Ua Haujlwm Kub → Xaiv Qib Tsim Nyog:> -20℃→ Carbon steel (A106 / A53) -20℃txog -45℃→ A333 Gr.6 -46℃rau -100℃→ A333 Gr.3 (3.5% Ni) <-100℃→ Stainless hlau lossis 9% Ni steel
3. Fabrication Guidelines:
| Kev ua haujlwm | Kev xav tau |
|---|---|
| Vuam | Preheat 100℃yam tsawg kawg nkaus, qis -hydrogen electrodes |
| Khoov | Kub khoov nyiam, txias khoov nrog ceev faj |
| Tshaj tawm -Kev kho cua sov | Pom zoo rau thickness> 19 hli |
| Cov teebmeem | Tsis txhob ntse ntswj, av weld ntiv taw du |
Kev sib piv nrog cov qauv zoo sib xws
| Txuj | Kub txwv | Qhov tseem ceeb sib txawv ntawm A333 Gr.6 |
|---|---|---|
| ASTM A106 Gr.B | >-29 degree | Tsis tas yuav muaj kev ntsuam xyuas cuam tshuam |
| ASTM A53 Gr.B | >-29 degree | Tsis muaj kev cuam tshuam kev sim, welded hom txawv |
| ASTM A333 Gr.1 | -50 degree | Siab dua Mn, Si tua hlau |
| ASTM A333 Gr.3 | -100 degree | 3.5% Nickel alloy hlau |
| ASTM A312 TP 304 Cov Lus Qhia Tshwj Xeeb | -196 degree | Austenitic stainless hlau rau qis temps |
Kev Ua Tsis Taus Hom & Kev Tiv Thaiv
1. Cov pob txha tawg:
Ua rau:Tsis tshua muaj kub + kev ntxhov siab + tsis xws luag
Kev Tiv Thaiv:Kev sim cuam tshuam, tsim kom raug, NDE
Tseem ceeb:Ntawm qhov kub thiab txias hauv qab cov khoom siv hluav taws xob- hloov pauv hloov
2. Thermal Stress:
Ua rau:Kev hloov pauv ceev ceev
Kev Tiv Thaiv:Maj mam cooldown, thermal stress tsom xam
Tsim:Flexible piping kev npaj
3. Kev qaug zog ntawm qhov kub thiab txias:
Ua rau:Cyclic loading nyob rau hauv nkig
Kev Tiv Thaiv:Kev soj ntsuam qaug zog, kev hloov pauv yooj yim
Khoom siv:Fine grain qauv txhim kho qaug zog tiv thaiv
Quality Assurance
Traceability Requirements:
Kub naj npawbtraceability yuav tsum tau
Cov ntawv ceeb toom cuam tshuamrau txhua qhov kub / phab ntsa thickness ua ke
Cov ntaub ntawv kho cua sov(kub, sijhawm, txias tus nqi)
Cov ntsiab lus tshuaj xyuas:
Cov ntaub ntawv pov thawjpov thawj
Impact test validationntawm qhov kub thiab txias
Kev txheeb xyuas qhov loj(ASTM E112, feem ntau 6 lossis finer)
Weld txheej txheem kev tsim nyograu qis-kev pabcuam kub
International sib npaug
| Thaj tsam | Standard sib npaug |
|---|---|
| Teb chaws Europe | TS EN 10216-4 P265NL |
| Nyiv | JIS G3460 STPT410 |
| Tuam Tshoj | GB/T 18984 L245 |
| ISO | ISO 3183 L245N |
Kev txiav txim siab nqi
Nqe Factors:
Hwm tshaj A106 Gr.B:20-40% (vim kev sim / kev kho cua sov)
Seamless vs Welded:Seamless 30-50% siab dua
Cov nqi kuaj:Kev ntsuam xyuas cuam tshuam ntxiv rau cov nqi tsev
Kev kho cua sov:Normalizing ntxiv cov txheej txheem tsim khoom
Economic Justification:
Kev nyab xeeb:Tiv thaiv kev puas tsuaj rau pob txha tawg
Kev ntseeg tau:Txo kev pheej hmoo ntawm kev kaw tsis tau npaj tseg
Kev pov hwm:Tej zaum yuav txo cov nqi tuav pov hwm rau cov nroj tsuag cryogenic
Kev Ua Raws Cai:Yuav tsum tau los ntawm ASME B31.3 rau qis- kev pabcuam kub
Ordering Information
Qhov tseem ceeb Specifications:
Ntau(tag nrho ntev los yog tus naj npawb ntawm cov kav dej)
Loj:NPS thiab Schedule
Hom:Seamless los yog Welded
Ntev:Random lossis tshwj xeeb txiav lengths
Xaus:Plain, beveled, los yog threaded
Cov Lus Qhia Ntxiv:Kev sim ntxiv
Sample Purchase Specification:
ntawv nyeem
ASTM A333 Qib 6 Yeeb Nkab, NPS 8, Teem sijhawm 40, Seamless, Kev kho cua sov zoo, beveled xaus, 6m random lengths, Nrog rau cov ntawv pov thawj cuam tshuam ntawm -45 degree, tag nrho MTC nrog traceability.
Kev Lag Luam Code References
ASME B31.3 Txheej Txheem Piping:
Tab A-1:Tso cai rau kev ntxhov siab rau A333 Gr.6
Nqe 323:Impact test xav tau
Tab 323.2.2A:Yam tsawg kawg nkaus tsim hlau kub
ASME Section VIII Division 1:
UG-84:Impact test xav tau rau cov hlab ntsha siab
UAS-66:Impact test exemption curves
Lwm cov ntaub ntawv:
API 5Lrau kev siv pipeline
TS EN 13480rau cov ntawv thov European
ISO 14692 Kev Tswj Xyuas Kev Lag Luamrau GRP piping lwm txoj kev
Kab hauv qab:ASTM A333 Qib 6 yog covtxheem carbon steel tovrau kev txhim khu kev qha, kev nyab xeeb ua haujlwm nyob rau hauv qis -cov kav dej kub qis mus rau-45 ° F (-50 ° F). Nws qhov yuav tsum tau kuaj qhov cuam tshuam thiab nplua - cov qauv ua qoob loo zoo muabassured toughnessqhov twg cov pa carbon steels yuav txaus ntshaikev puas tsuaj brittle fracture.
