Txheej txheem cej luam
CAN/CSA Z245.21-10yog Canadian Standards Association (CSA) tus qauv npe"Steel Pipe". Nws qhia cov kev cai rau kev tsim khoomseamless thiab welded steel yeeb nkabsiv feem ntau hauv cov roj thiab cov kav dej.
Cov qauv no yog ib feem ntawm tsev neeg loj ntawm cov qauv hauv qabZ245 series, uas suav nrog tswj cov khoom siv, tsim, teeb tsa, thiab kev ua haujlwm ntawm cov kav dej hauv Canada. Nws yog ib qho ncaj qha sib piv rau qhov dav siv American Petroleum Institute (API) specificationAPI 5L.
Ntsiab Scope thiab Daim Ntawv Thov
Kev Siv Tseem Ceeb:Cov yeeb nkab rau kev xa cov roj, roj, hydrocarbon kua, thiab dej hauv kev lag luam hluav taws xob.
Hom yeeb nkab:Npog ob qho tib siseamless (S)thiabwelded (W)cev. Welded yeeb nkab pawg muaj xws li:
Hluav taws xob Resistance Welded (ERW)
Fusion Welded (FW)
Submerged Arc Welded (SAW)- ob leeg ib leeg (SW) thiab ob (DW) vuam.
Qhov ntau thiab tsawg:Npog ntau yam ntawm sab nraud diameters thiab phab ntsa thicknesses.
Tswj System Standard:Nws yog tsim los siv ua ke nrog cov txheej txheem overarchingCSA Z662, "Oil thiab Gas Pipeline Systems". Z662 siv Z245.21 rau cov khoom siv yeeb nkab.
Cov Lus Qhia Tseem Ceeb
Cov txheej txheem yog qhov dav, npog txhua yam ntawm cov yeeb nkab tsim thiab kev sim.
1. Khoom Qib thiab Cov Qauv
Cov kav dej yog tsim los ntawm lawvQhov tsawg kawg nkaus yield zog (SMYS)thiabkev tsim khoom.
Qib:Cov qib uas muaj xws liQib 241, 290, 317, 359, 386, 414, 448, 483, 550, 586, 620, 690(cov lej sawv cev rau SMYS hauv MPa).
Piv txwv:Ib lub raj cimZ245.21-359 W 324 x 8.7yuav yog Welded yeeb nkab, Qib 359, nrog rau sab nraud txoj kab uas hla ntawm 324 hli thiab phab ntsa thickness ntawm 8.7 hli.
2. Kev tsim khoom
Tus txheej txheem teev cov kev cai nruj rau cov txheej txheem steelmaking, yeeb nkab sib sau, thiab vuam (rau welded yeeb nkab) kom ntseeg tau tias zoo sib xws thiab zoo.
3. Tshuaj muaj pes tsawg leeg
Qhia txog qhov txwv siab tshaj plaws rau carbon, manganese, sulfur, phosphorus, thiab lwm yam micro-alloying ntsiab (xws li, niobium, vanadium, titanium) kom ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab thiab weldability.
4. Mechanical Properties
Yuav tsum xeem kom paub tseeb:
Tensile zog:Ob leeg tawm los thiab qhov kawg tensile lub zog.
Elongation:Ductility ntawm cov khoom.
Hardness:Rau qee qib thiab daim ntawv thov.
Charpy V-Ntch (CVN) Impact Testing:Qhov no yog ib qho tseem ceeb uas yuav tsum tau muaj, tshwj xeeb tshaj yog rau cov kav dej hauv qhov chaw txias dua Canadian. Nws ntsuas cov yeeb nkab lub toughness thiab tsis kam rau nkig tawg ntawm qhov ntsuas kub.
5. Dimensional thiab Nyhav Tolerances
Txhais cov kev txwv uas siv tau rau:
Sab nraud txoj kab uas hla (OD)
Phab ntsa Thickness (WT)
Ntev
Kev ncaj
Mass (qhov hnyav)
6. Kev kuaj thiab tshuaj xyuas
Yuav tsum muaj ib qho kev pov hwm zoo, suav nrog:
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT):Txhua welded yeeb nkab yuav tsum tau 100% NDT ntawm vuam seam. Cov txheej txheem muaj xws li kuaj ultrasonic (UT) thiab kuaj hluav taws xob (RT).
Kev Ntsuas Hydrostatic:Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tiv taus qhov ntsuas hydrostatic siab uas ua rau muaj kev ntxhov siab ntawm qhov feem pua ntawm SMYS, tsis muaj dej los yog tawg.
Kev tshuaj xyuas qhov muag:Ob qho tib si sab hauv thiab sab nrauv raug tshuaj xyuas rau qhov tsis xws luag.
7. Kos npe thiab cov ntaub ntawv
Txhua cov yeeb nkab yuav tsum tau cim kom meej nrog cov ntaub ntawv tseem ceeb (qib, qhov loj me, tus lej xov tooj cua sov, chaw tsim khoom, tus qauv, thiab lwm yam). Cov chaw tsim khoom yuav tsum muab daim ntawv pov thawj ntawm kev ua raws cai lees tias cov yeeb nkab ua tau raws li txhua qhov yuav tsum tau ua ntawm Z245.21.
CAN/CSA Z245.21 vs API 5L
Qhov no yog ib lub ntsiab lus ntawm kev sib tham. Thaum ob tus qauv zoo sib xws thiab feem ntau sib npaug, muaj qhov sib txawv tseem ceeb uas tau tsav los ntawm Canada cov kev xav tau tshwj xeeb, tshwj xeeb tshaj yog nws huab cua hnyav.
| Feature | CAN/CSA Z245.21 | API 5L |
|---|---|---|
| Kev tswj hwm tus qauv | Siv los ntawmCSA Z662(Canadian) | Siv los ntawmASME B31.4 / B31.8(US/International) |
| Charpy Impact Testing | Yuav tsum taurau tag nrho cov yeeb nkab qib thiab qhov ntau thiab tsawg. | Tsis tas yuav tsum tau ua rau tag nrho cov yeeb nkab; feem ntau teev raws li qhov yuav tsum tau ua ntxiv (SR). |
| Fracture Control | Hais txog atxoj kev tswj kev puas tsuaj, tseem ceeb heev rau Arctic thiab qis -kev pabcuam kub. | Tsawg daim ntawv sau rau ntawm daim phiaj tswj kev puas tsuaj tag nrho. |
| Traceability | Qib siab heev ntawm traceability yuav tsum tau rau tus kheej cov yeeb nkab ntev. | Cov kev cai traceability feem ntau tsis nruj. |
Hauv qhov tseem ceeb, CSA Z245.21 tuaj yeem xav tias yog "API 5L ntxiv" ntxiv, yuav tsum muaj zog thiab kev lees paub zoo.
Qhov tseem ceeb hauv cov ntsiab lus Canadian
Cov kev cai nruj heev ntawm Z245.21, tshwj xeeb tshaj yog rau kev nyuaj siab (CVN kuaj), yog qhov tshwm sim ncaj qha ntawm cov kev kawm tau kawm los ntawm cov xwm txheej hauv cov kav dej thiab qhov xav tau rau kev ntseeg siab heev hauv Canada ntau haiv neeg thiab feem ntau nyuaj ib puag ncig, suav nrog Arctic.
Cov xwm txheej tam sim no
CAN/CSA Z245.21-2010 tau raug lees paub dua hauv 2015 thiab 2020.Qhov no txhais tau tias cov ntsiab lus technical tseem suav tias yog siv tau thiab nws tseem yog tus qauv siv tau. Thaum xa mus rau nws, koj feem ntau yuav hais nws liCAN/CSA Z245.21-10 (R2020).
Tsis lees paub:Qhov no yog cov ntsiab lus rau cov ntaub ntawv xov xwm. Rau ib qho kev tsim vaj tsev, kev yuav khoom, lossis kev tswj hwm kev ua ub no, koj yuav tsum sab laj tag nrho, tus qauv tsim tawm los ntawm CSA Group.
