SA179 seamless steel yeeb nkab, cov pa roj carbon steel yeeb nkab raws li ASME SA179 tus qauv (xws li GB / T 8163-2018 10# steel yeeb nkab), boasts cov pa roj carbon tsawg ntawm 0.06-0.18% thiab cov ntshiab muaj pes tsawg leeg tsawg dua los yog sib npaug li 0.035% sulfur thiab phosphorus 10 MP2 thiab muaj zog ntawm 0.035% thiab phosphorus 10 MP2 thiab muaj zog elongation ntawm ntau dua los yog sib npaug li 35%. Nws cov qauv ferrite-pearlite microstructure tau txais los ntawm kev tswj xyuas nruj nruj, ua rau nws tsim tshwj xeeb rau kev tsim cov khoom siv hluav taws xob thiab cov khoom siv condensing.
Cov yam ntxwv tseem ceeb:
1. Thermal conductivity: Thermal conductivity ncav cuag 45-50 W / (m·K), deb tshaj ntawm cov pa roj carbon zoo tib yam kav, ua rau nws tshwj xeeb tshaj yog haum rau kev siv tshav kub exchanger.
2. Mechanical zog: Tensile zog Ntau dua los yog sib npaug rau 325MPa, yield zog Ntau dua los yog sib npaug rau 180MPa, tswj cov qauv kev ruaj ntseg txawm nyob rau hauv siab - kub.
3. Dimensional raug: Sab nraud txoj kab uas hla kam rau ua nyob rau hauv ± 0.10mm, phab ntsa thickness sib txawv tsis tshaj ± 10%, kom ntseeg tau lub airtightness ntawm cov khoom sib dhos.
4. Nto Zoo: Tom qab pickling thiab phosphating, nto roughness Ra tsawg dua los yog sib npaug rau 0.8μm, zoo txo cov kua dej.
SA179 Steel Pipe Core Specifications thiab Supply Forms Basic Physical Specifications
- Sab nraud txoj kab uas hla: Φ6-102mm, phab ntsa thickness: 0.5-12.7mm ( kam rau ua ± 10%)
- Qhov siab tshaj plaws ib qhov ntev: 22 meters, muaj nyob rau hauv annealed / ci tiav
- Key Performance Indicators
- Hardness Tsawg dua los yog sib npaug rau 72HRB, Thermal conductivity: 49W / (m·K)
- Hydrostatic xeem siab Ntau dua los yog sib npaug rau 5MPa (tus qauv kuaj mob)
- Cov yam ntxwv ua haujlwm tshwj xeeb
- Expansion rate Ntau dua los yog sib npaug li 15% uas tsis muaj kab nrib pleb (sab nraud txoj kab uas hla)
- Pom zoo welding hlau: ER70S-6, tshav kub input Tsawg dua los yog sib npaug rau 25kJ / cm²
Daim ntawv thov
1. Fais fab nroj tsuag Boiler Systems: Raws li cov khoom tseem ceeb rau kev lag luam tube bundles, ib leeg 1000MW ultra-supercritical unit siv 380 tons. Nws tsis kam tiv thaiv cov hmoov tshauv xeb tso cai rau lub raj phab ntsa thinning tus nqi kom tswj tau qis dua 0.03mm / xyoo.
2. Cov Roj Refining Units: Nyob rau hauv atmospheric thiab lub tshuab nqus tsev distillation chav tsev atmospheric sab saum toj condenser, SA179 raj bundles tuaj yeem tiv taus H2S corrosion los ntawm leej faj- uas muaj cov roj crude. Cov ntaub ntawv ua haujlwm los ntawm Sinopec qhov project qhia tau hais tias nws lub neej kev pabcuam yog 2.3 npaug ntev dua li ntawm 304 stainless hlau.
3. Cov khoom siv tub yees: Evaporator raj tsim nrog φ19 × 1.25mm specifications ua tiav cov cua sov hloov coefficient txog li 2800W / (㎡·K), txhim kho lub zog ua haujlwm piv ntawm 15%.
4. Marine Propulsion: Tshwj xeeb yog tsim rau seawater txias tshuab. Tom qab siv cov khoom no, qee yam ntawm LNG nkoj pom qhov hnyav 12-tuj hauv nws cov kav dej.