X52 steel qib yog dab tsi?
X52 steel yeeb nkab yog qib tseem ceeb hauv API 5L "Specification for Line Pipe" thiab poob rau hauv PSL1 thiab PSL2 (qib siab dua) rau cov roj thiab roj kis tau tus mob steel. Nws qib kev xaiv ua raws li cov lus pom zoo thoob ntiaj teb:
"X": Qhia txog Pipeline Steel Classification.
"52": Qhia qhov tsawg kawg nkaus lub zog ntawm 52 ksi (~ 358 MPa).
Cov qib steel no, los ntawm qis-carbon micro- alloying tsim thiab thermo- cov txheej txheem tswj kev dov (TMCP), muaj lub zog siab thiab tawv thaum ua kom pom kev ua haujlwm zoo rau hydrogen-induced cracking (HIC) thiab sulfide stress corrosion cracking (SSC), ua rau nws cov khoom xaiv rau ob qho tib si. onshore thiab offshore roj thiab roj pipelines.
Cov khoom ntawm API X52 yog dab tsi?
Chemical Composition & Alloy Design
X52's alloy system ua raws li"low-carbon + micro-alloy" txoj cai:
Cov pa roj carbon (C): Tsawg dua los yog sib npaug rau 0.16% - Txo cov vuam khaub thuas tawg yooj yim
Manganese (Mn): 1.00%-1.40% - Txhim kho lub zog thiab ua kom cov nplej
Niobium (Nb): 0.01%-0.06% - Ua kom muaj zog los nag
Vanadium (V): Tsawg dua lossis sib npaug li 0.06% - Txhim kho kub dov stability
Titanium (Ti): Tsawg dua los yog sib npaug rau 0.04% - Kho nitrogen thiab txhim kho toughness
Sulfur (S) / Phosphorus (P): Tsawg dua lossis sib npaug rau 0.010% thiab Tsawg dua lossis sib npaug rau 0.020% - Tswj kev cais thiab brittleness
Qhov tseem ceeb weldability ntsuas:
Carbon sib npaug (Ceq, IIW formula) Tsawg dua lossis sib npaug rau 0.43%
Txias cracking susceptibility coefficient (Pcm) Tsawg dua lossis sib npaug li 0.20%
→ Haum rau thaj chaw vuam hauv qhov chaw hnyav
Core Mechanical Properties (API 5L PSL2)
| Parameter | Tus nqi |
|---|---|
| Yield zog (Rt0.5) | 358-530 MPa |
| Tensile zog (Rm) | 455-570 MPa |
| Yield-rau-Tensile Ratio | Tsawg dua lossis sib npaug li 0.93 |
| CVN ntawm -20 degree | Ntau dua lossis sib npaug li 40 J |
| Hardness (Base Hlau / Weld) | Tsawg dua lossis sib npaug li 250 HB / Tsawg dua lossis sib npaug li 280 HB |
| Fracture Toughness (CTOD, -10 degree) | Ntau dua lossis sib npaug li 0.15 mm |
Kev ua tau zoo vs X42:
▲ 25% siab dua deformation kuj
▲ 40% nce KISSChauv H2S-muaj xov xwm
Qhov txawv ntawm API 5L X52 thiab A106 yog dab tsi?
| Parameter | API 5L X52 (PSL2) | ASTM A106 Qib B | Qhov txawv ntawm qhov tseem ceeb |
|---|---|---|---|
| Txheem Scope | Pipeline kis tau tus mob | Boiler/high -temp txheej txheem piping | A106 rau static siab -temp systems |
| Kev Pabcuam Media | Roj, roj, dej, CO₂ | Chav, kub gases, thermal roj | A106 rau ntau dua lossis sib npaug rau 370℃daim ntawv thov |
| Yield zog | Ntau dua lossis sib npaug li 360 MPa(52,200 psi) | Ntau dua lossis sib npaug rau 240 MPa (35,000 psi) | X52 muaj 50% zog dua |
| Tsawg-Temp Toughness | Ntau tshaj lossis sib npaug rau 40J @ -20 degree | Tsis xav tau | X52 rau arctic / subsea siv |
| Siab -Tseem txwv | Max 80 degree | Max 425 degree | A106 ua tau zoo hauv thermal kuj |
| Kev kuaj Corrosion | Yuav tsum HIC/SSC | Tsis muaj | X52 rau kev pabcuam qaub |
| NDT Coverage | 100% UT + ET | Sampling RT/UT | X52 xav tau kev tshuaj xyuas nruj dua |
| Carbon sib npaug | CEIIW Tsawg dua lossis sib npaug rau 0.45% | CEIIW Tsawg dua lossis sib npaug rau 0.50% | A106 xav tau ntau dua preheat temp |
| Daim ntawv thov | Ntev -kab kav dej | Fais fab nroj tsuag boilers | TSIS TAU INTERCHANGEABLE! |
API 5L X52 specification yog dab tsi?
| Qhov ntau thiab tsawg | Nominal Pipe Loj 1/2 "mus rau 48" OD Phab ntsa Thickness - Teem sijhawm 10 txog 160, STD, XS, XXS. |
|---|---|
| Khoom Specification Level (PSL) | API 5L X52 PSL 2 API 5L X52 PSL 1 |
| Thickness | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, Tag nrho cov sij hawm |
| Daim ntawv thov | Roj Refineries, Petrochemicals, Fais Fab Tsim (Nuclear / Thermal), Hlau, Qab Zib, Boiler Equipments, Siab Vessels thiab General Engineering Lub Hom Phiaj |
| Cov yeeb nkab kawg | Plain, Bevel, Screwed, Threaded |
| Hom | Seamless / ERW / Welded / Fabricated / CDW |
| Ntev | Ib qho Random, Ob Chav Random & Ntev Ntev, Kev Cai Loj - 12 Meter lengths |
| Daim ntawv ntsuam xyuas thiab tshuaj xyuas | EN 10204 3.1, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, Destructive Test Reports, Non Destructive Test Reports, Mill TC EN 10204 3.1, NABL Approved Lab, Chemical and Mechanical Reports, India Boiler Regulations (IBR) Test Certificate |
| Ntim | API 5L X52 GR. B Cov yeeb nkab ntim rau hauv cov thawv ntoo, hnab yas, cov hlua hlau, lossis raws li cov neeg siv khoom thov |
| Ua tiav | Liab qab, Oiled, Mill Varnish, Galv, FBE, FBE Dual, 3LPE, 3LPP, Coal Tar, Concrete Txheej thiab daim kab xev Wrap.End Finishes: Beveled, Square Cut, Threaded & Coupled. |
| Daim ntawv thov & siv | Haum rau Kev xa cov pa roj, dej, roj, thiab lwm yam liquefied media. |
| TS EN 10208-2: 2009 | API 5L X52 pipelines rau combustible kua. Haum rau siv nyob rau hauv siab tshaj plaws kev khiav hauj lwm siab tshaj 16 bar. |
| Kev pab cuam ntxiv |
ARO 3 LPE Fusion Bond Epoxy Epoxy hmoov Kev kho cua sov Khoov Galvanizing Annealed Xuab zeb Blasting Tshuab dhos Kos & Expansion raws li qhov xav tau Loj & Ntev thiab lwm yam. |
API 5L X52 pipeline Hoobkas
