Q: Yuav tsum tau kuaj xyuas thiab kuaj dab tsi ua ntej xa khoom?
A:Cov txheej txheem yuav tsum muaj xws li kev tshuaj xyuas qhov muag, kev kuaj xyuas qhov ntev, thiab kev ntsuam xyuas cov cuab yeej cuab tam. Ntxiv thiab,tsis yog -kev kuaj kev puas tsuaj (NDT)ntawm weld seam ntawm welded kav yog ib qho kom ntseeg tau tias tsis muaj qhov tsis xws luag uas tuaj yeem cuam tshuam kev ua haujlwm.
Q: Dab tsi yog qhov vuam thiab kev txiav txim siab rau ASTM A252 pawg?
A:Cov pawg feem ntau sib txuas ua ke hauv thaj teb. Vuam yuav tsum tau ua los ntawm kev siv cov txheej txheem tsim nyog thiab cov welders kom ntseeg tau tias cov splice muaj zog npaum li cov yeeb nkab nws tus kheej. Qhov no yog qhov tseem ceeb rau kev tswj txoj kev thauj mus los ntawm lub hauv paus-1.
Q: ASTM A252 cov kav dej tiv thaiv corrosion li cas?
A:Cov kev tiv thaiv ib txwm muaj xws li kev thovtiv thaiv txheej(xws li epoxy lossis thee tar) lossis sivcathodic tiv thaiv systems. Rau ib puag ncig hnyav, cov lus qhia tshwj xeeb tuaj yeem hu rau cov hlau tuab ntxiv (kev tiv thaiv corrosion) lossis siv cov qib siab dua - qib steel.
Q: Cov kev cai lag luam thoob ntiaj teb cuam tshuam li cas rau cov khoom siv thiab cov nqi ntawm cov yeeb nkab steel?
A:Kev lag luam tau cuam tshuam loj heev los ntawm kev ntsuas kev lag luam xws li tariffs thiab tiv thaiv -dumping luag hauj lwm-2. Txoj cai xws li Teb Chaws Asmeskas Tshooj 232 tariffs rau steel aim los tiv thaiv cov neeg tsim khoom hauv tsev tab sis tuaj yeem nce nqi khoom thiab tsim cov khoom sib tw rau cov chaw tsim khoom thiab kev tsim kho-4.
Q: Dab tsi yog qhov sib txawv hauv kev txheeb xyuas qhov zoo thiab cov khoom siv traceability rau cov khoom tseem ceeb steel?
A:Muaj kev lag luam loj zuj zus mus rau kev txhim kho traceability, tshwj xeeb tshaj yog rau cov txheej txheem tseem ceeb. Cov thev naus laus zis zoo li molecular-qib pov thawj, uas embeds ib qho chaw ruaj khov, hloov tsis tau tus kheej rau hauv cov hlau, tab tom tshwm sim. Qhov no muab kev ntseeg siab ntau dua hauv cov khoom siv tseeb thiab ua raws li cov lus qhia thoob plaws hauv cov khoom siv-5.
