ASTM B221 yog cov txheej txheem tseem ceeb uas feem ntau siv nyob rau hauv North American lag luam, uas nruj me ntsis teev cov tshuaj muaj pes tsawg leeg, txhua yam khoom thiab kev soj ntsuam cov txheej txheem ntawm txhuas alloys.Qhov kev lag luam muaj zog versatility thiab siab lees paub. Cov qauv no yog ib qho nyuaj nkag mus rau txhuas profiles kom nkag mus rau North American lub tsev cov ntaub ntawv lag luam, thiab kuj yog ib qho tseem ceeb siv rau kev tswj kom zoo ntawm lub ntiaj teb no high-end profiles.
EN European Kev Lag Luam Standard
EN755 series tus qauv specification profile mechanical zog, cov qauv loj kam rau ua, EN12020 rau high-precision lub tsev profiles.Ua raws li qhov yuav tsum tau zoo ntawm EU high-end kev tsim kho tej yaam num. Aluminium profiles xa tawm mus rau EU ua lag luam yuav tsum ua raws li EN series cov qauv thiab ua tiav CE daim ntawv pov thawj.Tsuas yog tom qab ntawd cov kev lis kev cai tuaj yeem ua kom tiav thiab raug cai siv rau hauv kev lag luam hauv zos thiab kev tsim kho.