Cov khoom siv yeeb nkab steel yog siv dav hauv ntau yam kev lag luam, xws li kev tsim kho, roj thiab roj, thiab dej. Nws yog cov khoom siv ntau yam uas muaj lub luag haujlwm tseem ceeb hauv kev lag luam. Nrog rau qhov kev thov ntau ntxiv rau cov kav dej steel, cov tuam txhab tsim khoom yuav tsum ua raws li ntau yam kev cai, cov qauv, thiab cov ntawv pov thawj los xyuas kom meej tias lawv cov khoom muaj kev nyab xeeb thiab txhim khu kev qha.
Ib qho ntawm cov ntawv pov thawj tseem ceeb tshaj plaws rau cov khoom siv yeeb nkab steel hauv European Union yog daim ntawv pov thawj CE. Daim npav CE yog daim ntawv pov thawj yuav tsum tau qhia tias cov khoom ua tau raws li European Union tus qauv kev noj qab haus huv, kev nyab xeeb, thiab kev tiv thaiv ib puag ncig. Nws tseem yog lub cim ntawm kev ua tau zoo thiab kev ntseeg siab, uas yog qhov tseem ceeb rau kev tsim kev ntseeg siab nrog cov neeg siv khoom thiab tau txais kev nkag mus rau kev lag luam.
Cov txheej txheem CE daim ntawv pov thawj rau cov khoom siv yeeb nkab steel suav nrog kev sim nruj, tshuaj xyuas, thiab cov ntaub ntawv. Cov chaw tsim khoom yuav tsum muab pov thawj tias lawv cov khoom ua tau raws li cov qauv kev sib haum xeeb, suav nrog EN 10255, EN 10219, EN 10217, thiab lwm yam. Qhov no yog ua los ntawm kev sib xyaw ua ke ntawm kev sim, suav, thiab kev tshuaj xyuas. Cov kev ntsuam xyuas suav nrog lub zog tensile, cuam tshuam tsis kam, elongation, thiab lwm yam khoom siv kho tshuab uas ua kom cov khoom muaj zog thiab kav ntev.
Ntxiv nrog rau cov kev ntsuam xyuas tshuab, cov khoom siv steel yeeb nkab kuj yuav tsum tau xeem dhau qhov kev ntsuas tsis muaj kev puas tsuaj, xws li kev tshuaj xyuas ultrasonic thiab radiographic, txhawm rau txheeb xyuas qhov tsis xws luag lossis qhov tsis zoo uas tuaj yeem cuam tshuam cov khoom zoo thiab kev nyab xeeb. Cov chaw tsim khoom kuj tseem yuav tsim cov ntaub ntawv kev tshaj lij, suav nrog CE Daim Ntawv Tshaj Tawm Txog Kev Ua Raws Cai, uas qhia txog cov qauv kev sib haum xeeb uas cov khoom ua tau raws li thiab muab cov ntaub ntawv ntawm cov khoom specifications thiab kev ua tau zoo.
Rau cov chaw tsim khoom, tau txais daim ntawv pov thawj CE yog qhov kev nqis peev tseem ceeb hauv lub sijhawm, cov peev txheej, thiab kev txawj ntse. Txawm li cas los xij, nws tseem yog qhov tseem ceeb hauv kev nkag mus rau kev lag luam thiab tsim lub koob npe zoo hauv kev lag luam. Cov khoom siv steel yeeb nkab uas nqa cov cim CE muaj qhov sib tw kom zoo dua hauv kev ua lag luam, raws li lawv tau pom tias zoo dua, muaj kev nyab xeeb, thiab txhim khu kev qha.
Hauv kev xaus, daim ntawv pov thawj CE yog daim ntawv pov thawj tseem ceeb rau cov khoom siv yeeb nkab steel uas muag hauv European Union. Nws sawv cev rau kev cog lus rau kev ua tau zoo, kev nyab xeeb, thiab kev tiv thaiv ib puag ncig thiab yog qhov tseem ceeb hauv kev nkag mus rau kev lag luam thiab tsim lub koob npe zoo hauv kev lag luam. Cov neeg tsim khoom lag luam uas tau nqis peev hauv kev tau txais daim ntawv pov thawj CE qhia lawv txoj kev mob siab rau ua tau raws li cov qauv siab tshaj plaws thiab muab lawv cov neeg siv khoom nrog cov khoom zoo tshaj plaws.
