**1. Puas yog ASTM A335 carbon steel?
Tsis yog, ASTM A335 tsis yog carbon hlau. Nws yog ib qho kev qhia tshwj xeeb rau ** seamless ferritic alloy- steel yeeb nkab ** tsim los rau siab -kev pabcuam kub. Cov kav dej raws li tus qauv no yog tsim los ntawm cov hlau alloy, feem ntau muaj chromium thiab molybdenum, muab lub zog thiab tiv thaiv oxidation thiab corrosion ntawm qhov kub thiab txias.
**2. ASTM code rau carbon steel yeeb nkab yog dab tsi?
Tsis muaj ib tus lej nkaus xwb, vim cov lej sib txawv ua haujlwm sib txawv. Txawm li cas los xij, feem ntau thiab tus qauv ASTM cov lej rau carbon steel yeeb nkab yog:
* ** ASTM A106:** Rau seamless carbon steel yeeb nkab rau siab -kev pab kub.
* ** ASTM A53:** Rau ob qho tib si seamless thiab welded (ERW) carbon steel yeeb nkab, feem ntau yog rau cov dav dav thiab qis / nruab nrab- kev pabcuam kub.
* ** ASTM A333:** Rau seamless thiab welded carbon steel yeeb nkab npaj rau qis - kub kev pab cuam.
**3. ASTM A335 qib P11 sib npaug li cas?**
ASTM A335 Qib P11 yog sib npaug rau ntau tus qauv thoob ntiaj teb, nrog rau feem ntau:
* ** DIN / EN: ** 1.7381 lossis 13CrMo4-5
* **JIS:** STPA 22
** UNS:** K11597
Qib no yog chromium -molybdenum alloy hlau nrog nominal muaj pes tsawg leeg ntawm 1.25% Chromium thiab 0.5% Molybdenum.
** 4. Qhov twg zoo dua, seamless lossis ERW yeeb nkab?
Tsis muaj qhov kev xaiv "zoo dua"; qhov kev xaiv yog nyob ntawm daim ntawv thov.
* ** Seamless Yeeb Nkab (SMLS) ** muaj zog dua thiab txhim khu kev qha ntawm qhov kub thiab txias dua vim nws tsis muaj vuam seam, uas yog qhov muaj peev xwm ntawm qhov tsis muaj zog. Nws yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov tseem ceeb xws li siab - cov kab hluav taws xob siab, kev tshawb nrhiav roj thiab roj, thiab cov chaw tsim hluav taws xob.
* ** ERW Yeeb Nkab (Electric Resistance Welded) ** yog tus nqi ntau dua - zoo thiab haum rau feem ntau qis rau nruab nrab - kev siv siab, xws li cov kav dej, kev siv cov qauv, thiab laj kab. Cov txheej txheem ERW niaj hnub no tau txhim kho qhov zoo thiab kev ntseeg siab ntawm vuam seam.
Hauv cov ntsiab lus, xaiv seamless rau qhov tseem ceeb, siab - kev pabcuam kev ntxhov siab, thiab xaiv ERW rau kev lag luam, kev siv dav dav - lub hom phiaj.
**5. ERW sawv cev rau dab tsi?**
ERW stands rau ** Hluav taws xob Resistance Vuam **. Nws yog cov txheej txheem tsim khoom uas cov yeeb nkab yog tsim los ntawm cov hlau phaj thiab cov seam yog welded los ntawm kev siv lub siab thiab hluav taws xob tam sim no uas ua rau cov cua sov los ntawm kev ua haujlwm.
