Q: Dab tsi yog qhov tseem ceeb ntawm "NACE MR0175 / ISO 15156" tus qauv?
A:Cov qauv no qhia txog cov khoom siv tiv thaiv Sulfide Stress Cracking (SSC) hauv cov roj thiab roj ntau lawm uas muaj H2S (kev pabcuam qaub). Cov kav dej rau tej qhov chaw zoo li no (piv txwv liAPI 5Lthiab5CT uacov qhab nia tshwj xeeb hardness txwv) yuav tsum ua raws.
Q: Dab tsi yog "Heat Exchanger Tube" thiab cov khoom tseem ceeb?
A:Cov no yog seamless (los yog welded) raj siv nyob rau hauv shells thiab raj kub exchangers. Cov khoom tseem ceeb muaj xws li corrosion kuj (feem ntauASTM A249 TP 304 / 316 Txheem), qhov ntev meej rau dov rau hauv cov ntawv raj, thiab muaj peev xwm tiv taus thermal cycling. Cov qib carbon steel zoo liA179kuj muaj ntau.
Q: Vim li cas cov kav dej seamless siv hauv "Pressure Vessels"?
A:Seamless kav (rauASTM A333 Cov khoom lag luamrau qis -temp,A335rau siab -temp) yog siv los ua lub nozzles, kev sib txuas, thiab qee zaum lub plhaub rau cov hlab ntsha siab vim tias lawv muaj kev tiv thaiv zoo tshaj plaws thiab qaug zog tiv thaiv piv rau cov khoom siv welded hauv thaj chaw tseem ceeb.
Q: Dab tsi yog "Hydraulic Lub tog raj kheej chim" raj lub ntsiab lus tseem ceeb?
A:Rau hydraulic thooj voos kheej kheej (ASTM A519 Cov Lus Qhia Tshwj Xeeb), tus yam ntxwv tseem ceeb yog ib qho yooj yim heev, honed sab hauv nto tiav (feem ntau Ra <0.4 µm) kom txo qis kev sib tsoo thiab kev sib txhuam, ua ke nrog lub zog siab thiab ncaj. Seamless txias- cov raj kos yog feem ntau siv.
Q: Dab tsi yog "Bearing Tubes"?
A:Lawv yog siab -precision, siab- lub zog seamless raj (xws li, ua los ntawmTIAB SA 52100bearing steel) siv los tsim cov kabmob rings. Lawv xav tau kev huv huv zoo heev (tsis suav nrog), tsis sib xws hardness, thiab meej qhov ntev.
